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  • 1.
    Aasa, Björn
    et al.
    Umeå universitet.
    Sandlund, Jonas
    Umeå universitet.
    Rudolfsson, Thomas
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Aasa, Ulrika
    Umeå universitet.
    Acuity of goal-directed arm movements and movement control; evaluation of differences between patients with persistent neck/shoulder pain and healthy controls2022Inngår i: European Journal of Physiotherapy, ISSN 2167-9169, E-ISSN 2167-9177, Vol. 24, nr 1, s. 47-55Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background

    The main aim was to examine whether patients with persistent upper quadrant pain have higher end-point variability in goal directed pointing movements than pain-free controls when the pointing task is performed in total darkness and under full vision. An additional aim was to study associations between the magnitude of end-point variability and a clinical movement control test battery and self-rated functioning among patients.

    Methods

    Seventeen patients and 17 age- and gender-matched pain-free controls performed a pointing task that evaluated end-point variability of repetitive shoulder movements in horizontal adduction and abduction with full vision, and abduction with no visual information, completed a movement control test battery of neck and shoulder control tests and answered questionnaires.

    Results

    Patients had higher end point variability for horizontal abduction when performed with no visual information. For horizontal adduction the variability was higher, but only when it was controlled for movement time. No significant correlations were found between end-point variability and self-rated functioning, nor between end-point variability and neuromuscular control of the glenohumeral joint.

    Conclusions

    This study provides preliminary evidence that patients with persistent neck/shoulder pain can partly compensate proprioceptive deficits in goal-directed arm movement when visual feedback is present.

    Fulltekst (pdf)
    fulltext
  • 2.
    Aasa, Ulrika
    et al.
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Jensen, B R
    Sandfeld, J
    Lyskov, Eugene
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Richter, Hans O
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Crenshaw, Albert G.
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    The impact of computer mouse work with different size objects on subjective perception of fatigue and performance2007Inngår i: 39th Annual Congress of the Nordic Ergonomics Society, 2007Konferansepaper (Annet vitenskapelig)
  • 3.
    Aasa, Ulrika
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, CBF. Högskolan i Gävle, Centrum för belastningsskadeforskning. Department of Community Medicine and Rehabilitation, Physiotherapy, University of Umeå, Sweden.
    Jensen, B. R.
    Sandfeld, J.
    Richter, Hans
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, CBF. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Lyskov, Eugene
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, CBF. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Crenshaw, Albert G.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, CBF. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    The impact of object size and precision demands on fatigue during computer mouse use2011Inngår i: Advances in Physiotherapy, ISSN 1403-8196, E-ISSN 1651-1948, Vol. 13, nr 3, s. 118-127Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Prolonged computer use, especially if fatigue ensues, is associated with visual and musculoskeletal symptoms. The aim was to determine the time-course of perceived fatigue in the wrist, forearm, shoulder and eyes during a 60-min mouse task (painting rectangles), and whether object size and/or mouse use demands were of influence. Also, we investigated performance (number of rectangles painted), and whether perceived fatigue was paralleled by local muscle fatigue or tissue oxygenation. Ten women performed the task for three conditions (crossover design). At condition 1, rectangles were 45 × 25 mm, square paint cursor size 1.3 × 1.3 mm, and mousepointer movement ratio 1:26. At condition 2, the same cursor size and mousepointer movement ratio was used, but rectangles were smaller. At condition 3, the smaller rectangles were used, but the cursor size was also smaller and mousepointer movement ratio was 1:8. The results showed increased self-reported fatigue over time, with the observed increase greater for the eyes, but no change in physiological responses. Condition 2 resulted in higher performance and increased eye fatigue. Perceived fatigue in the muscles or physiological responses did not differ between conditions. In conclusion, computer work tasks imposing high visual and motor demands, and with high performance, seemed to have an influence on eye fatigue. 

  • 4.
    Aasa, Ulrika
    et al.
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Kalezic, Nebojsa
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Lyskov, Eugene
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Ängquist, Karl-Axel
    Department of Surgical and Perioperative Sciences, University of Umeå, Umeå, Sweden.
    Barnekow-Bergkvist, Margareta
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Stress monitoring of ambulance personnel during work and leisure time2006Inngår i: International Archives of Occupational and Environmental Health, ISSN 0340-0131, E-ISSN 1432-1246, Vol. 80, nr 1, s. 51-59Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objectives: The aim of the present study was to assess physiological and subjective stress markers during a 24-h ambulance work shift and during the next two work-free days, and relate these parameters to self-reported health complaints. Methods: Twenty-six ambulance personnel were followed during a 24-h work shift and during the next two work-free days with electrocardiogram, cortisol assessments and diary notes. The ambulance personnel also performed tests of autonomic reactivity before and at the end of the work shift. The subjects were categorized into two groups according to their number of health complaints. Results: In general, stress markers did not show differences between the work shift and leisure time. However, a modest deviation in heart rate variability pattern and higher morning cortisol values during work in comparison with work-free days were observed in personnel with many health complaints. Conclusions: Subjective and physiological characteristics of ambulance personnel did not indicate distinctive stress during the 24-h work shift. Relationships between frequent health complaints and specific work-related factors require further prospective studies.

  • 5.
    Aasa, Ulrika
    et al.
    Umeå universitet.
    Wiitavaara, Birgitta
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Personalens hälsa och arbetsmiljö2009Inngår i: Prehospital akutsjukvård / [ed] Suserud, Björn-Ove. Svensson, Leif., Stockholm: Liber , 2009, s. 33-38Kapittel i bok, del av antologi (Annet vitenskapelig)
    Fulltekst (pdf)
    FULLTEXT01
  • 6.
    Aasa, Ulrika
    et al.
    Umeå universitet.
    Wiitavaara, Birgitta
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Personalens hälsa och arbetsmiljö2016Inngår i: Prehospital akutsjukvård / [ed] Björn-Ove Suserud, Lars Lundberg, Stockholm: Liber, 2016, 2, s. 72-79Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 7.
    Aasa, Ulrika
    et al.
    Högskolan i Gävle, Centrum för belastningsskadeforskning. Department of Community Medicine and Rehabilitation, physiotherapy, University of Umeå, Umeå, Sweden.
    Ängquist, Karl-Axel
    Department of Surgical and Perioperative Sciences, University of Umea ̊ , Sweden.
    Barnekow-Bergkvist, Margareta
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    The effects of a 1-year physical exercise programme on development of fatigue during a simulated ambulance work task2008Inngår i: Ergonomics, ISSN 0014-0139, E-ISSN 1366-5847, Ergonomics, Vol. 51, nr 8, s. 1179-1194Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aim of the study was to evaluate the effects of individually prescribed physical exercise programmes on development of fatigue during the carrying of a loaded stretcher up and down the stairs. Nineteen ambulance personnel performed the training for 1 year. Testing occurred before and after 1 year of the training. Both the training group (n = 19) and the control group (n = 15) were assessed for physical capacity and lactate concentration in blood and ratings of perceived exertion during carrying a stretcher on the stairs. When comparisons were made between those who had been training three times/week for 1 year and the control group, lactate concentration was significantly decreased. In conclusion, markers of fatigue during stretcher carrying can be reduced by the use of individually prescribed physical exercise programmes.

  • 8.
    Abbott, Rebecca
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Straker, Leon
    Curtin Health Innovation Research Institute, Curtin University, Perth, Australia.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Patterning of children's sedentary time at and away from school2013Inngår i: Obesity, ISSN 1930-7381, E-ISSN 1930-739X, Vol. 21, s. E131-E133Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objective:

    Sedentary behavior in children is positively associated with an increased risk of both obesity and insulin resistance. Children spend a considerable portion of their awake time in sedentary behavior; however, the pattern of accumulation is not known. Thus the objective of this study was to describe the patterning of sedentary behavior of children at and away from school.

    Design and Methods:

    The patterns of sedentary time in a sample of 53 children (28 girls) aged 10-12 years during school-term time were examined. Children wore an accelerometer for 1 week. Total sedentary time, prolonged sequences (bouts) of sedentary time, and frequency of active interruptions to sedentary were examined on school days and weekends and within school time and non-school time on school days.

    Results:

    The data did not support our hypothesis that children accumulated more sedentary time on school days when compared with weekend days (mean [SD]: 64.4% [5.3] vs. 64.9% [9.0], P = 0.686). However, when comparing school time with non-school time on school days, children accumulated more sedentary time at school (66.8% [7.3] vs. 62.4% [5.2], P < 0.001) and spent more time at school in sustained sedentary sequences, that is, uninterrupted sedentary time for 30 min or more (75.6 min [45.8] vs. 45.0 min [26.8], P < 0.002). The children also recorded less breaks per sedentary hour within school time when compared with non-school time (8.9 h−1 vs. 10.2 h−1, P < 0.001).

    Conclusion:

    Reducing total sedentary time spent both in and out of school remains an important challenge. Interrupting sedentary time more often in the “working” (school) day could also reap important musculoskeletal and metabolic health rewards for children.

  • 9.
    Aboagye, Emmanuel
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Institute of Environmental Medicine, Unit of Intervention and Implementation Research for Worker Health, Karolinska Institutet, Stockholm, Sweden.
    Björklund, Christina
    Gustafsson, Klas
    Department of Clinical Neuroscience, Division of Insurance Medicine, Karolinska Institutet, Stockholm, Sweden. .
    Hagberg, Jan
    Aronsson, Gunnar
    Department of Psychology, Stockholm University.
    Marklund, Staffan
    Department of Clinical Neuroscience, Division of Insurance Medicine, Karolinska Institutet.
    Leineweber, Constanze
    Stress Research Institute, Stockholm University.
    Bergström, Gunnar
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Institute of Environmental Medicine, Unit of Intervention and Implementation Research for Worker Health, Karolinska Institutet.
    Exhaustion and impaired work performance in the workplace: Associations with presenteeism and absenteeism2019Inngår i: Journal of Occupational and Environmental Medicine, ISSN 1076-2752, E-ISSN 1536-5948, Vol. 61, nr 11, s. e438-e444Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    OBJECTIVE: The aim of this study was to investigate the association between presenteeism and absenteeism during the previous year and the current levels of exhaustion and impaired work performance in a Swedish university setting.

    METHODS: In a study of 3525 employees, an ordinal logistic regression and general linear model was used to examine the association between presenteeism and absenteeism during the previous year and the current exhaustion and impaired work performance, respectively.

    RESULTS: Presenteeism, but not absenteeism, during the previous year independently increased the risk of having moderate or severe exhaustion. Presenteeism, absenteeism, and exhaustion remained positively associated with impaired work performance when health status and other confounders had been adjusted for.

    CONCLUSIONS: Presenteeism, but not absenteeism, was associated with exhaustion. Both presenteeism and absenteeism were the salient correlates of impaired work performance.

  • 10.
    Aboagye, Emmanuel
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Karolinska institutet.
    Gustafsson, Klas
    Karolinska institutet.
    Jensen, Irene
    Karolinska institutet.
    Hagberg, Jan
    Karolinska institutet.
    Aronsson, Gunnar
    Stockholms universitet.
    Marklund, Staffan
    Karolinska institutet.
    Leineweber, Constanze
    Karolinska institutet.
    Bergström, Gunnar
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Karolinska institutet.
    What is number of days in number of times? Associations between, and responsiveness of, two sickness presenteeism measures.2020Inngår i: Journal of Occupational and Environmental Medicine, ISSN 1076-2752, E-ISSN 1536-5948, Vol. 62, nr 5, s. 180-185Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    OBJECTIVE: To examine the associations between SP reported as number of days with SP reported as number of times and to evaluate their responsiveness.

    METHODS: The study population (n = 454) consisted of employed individuals, at risk of long-term sickness absence. Correlation analyses were performed to examine associations between the two SP measures and external constructs such as work performance, general health and registered sick leave. Both SP constructs were measured several times to examine responsiveness.

    RESULTS: The SP measures are moderately correlated. They moderately correlated with work performance and health status measures. SP reported as number of times seem to be more sensitive than number of days in detecting changes after rehabilitation.

    CONCLUSIONS: Numerical or categorical constructs are valid sources of data on SP. However, categorized SP seem to be more responsive.

  • 11.
    Aboagye, Emmanuel
    et al.
    Karolinska institutet.
    Jensen, Irene
    Karolinska institutet.
    Bergström, Gunnar
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Karolinska institutet.
    Björk Brämberg, Elisabeth
    Karolinska institutet.
    Pico-Espinosa, Oscar Javier
    Karolinska institutet.
    Björklund, Christina
    Karolinska institutet.
    Investigating the association between publication performance and the work environment of university research academics: a systematic review2021Inngår i: Scientometrics, ISSN 0138-9130, E-ISSN 1588-2861, Vol. 126, nr 4, s. 3283-3301Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    The purpose of this review was to investigate the association between publication performance and the organizational and psychosocial work environment of academics in a university setting. In 2018 we conducted database searches in Web of Science, Medline and other key journals (hand-searched) from 1990 to 2017 based on population, exposure and outcome framework. We examined reference lists, and after a title and abstract scan and full-text reading we identified studies that were original research and fulfilled our inclusion criteria. Articles were evaluated as having a low, moderate or high risk of bias using a quality assessment form. From the studies (n = 32) identified and synthesized, work-environment characteristics could explain the quality and quantity aspects of publication performance of academics. Management practices, leadership and psychosocial characteristics are influential factors that affect academics’ publication productivity. Most of the reviewed studies were judged to be of moderate quality because of issues of bias, related to the measuring of publication outcome. The findings in the studies reviewed suggest that highly productive research academics and departments significantly tend to be influenced by the organizational and psychosocial characteristics of their working environment. The practical relevance of this review is that it highlights where academics’ performance needs support and how the work environment can be improved to bolster publication productivity.

    Fulltekst (pdf)
    fulltext
  • 12.
    Aboagye, Emmanuel
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Karolinska institutet.
    Lilje, Stina
    Karolinska institutet; Sophiahemmet University, Stockholm.
    Bengtsson, Camilla
    Sophiahemmet University, Stockholm.
    Peterson, Anna
    Sophiahemmet University, Stockholm.
    Persson, Ulf
    The Swedish Institute for Health Economics, Lund.
    Skillgate, Eva
    Sophiahemmet University, Stockholm; Karolinska institutet.
    Manual therapy versus advice to stay active for nonspecific back and/or neck pain: a cost-effectiveness analysis2022Inngår i: Chiropractic and Manual Therapies, E-ISSN 2045-709X, Vol. 30, nr 1, artikkel-id 27Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background

    Low back and neck pain are the most common musculoskeletal disorders worldwide, and imply suffering and substantial societal costs, hence effective interventions are crucial. The aim of this study was to evaluate the cost-effectiveness of manual therapy compared with advice to stay active for working age persons with nonspecific back and/or neck pain.

    Methods

    The two interventions were: a maximum of 6 manual therapy sessions within 6 weeks, including spinal manipulation/mobilization, massage and stretching, performed by a naprapath (index group), respectively information from a physician on the importance to stay active and on how to cope with pain, according to evidence-based advice, at 2 occasions within 3 weeks (control group). A cost-effectiveness analysis with a societal perspective was performed alongside a randomized controlled trial including 409 persons followed for one year, in 2005. The outcomes were health-related Quality of Life (QoL) encoded from the SF-36 and pain intensity. Direct and indirect costs were calculated based on intervention and medication costs and sickness absence data. An incremental cost per health related QoL was calculated, and sensitivity analyses were performed.

    Results

    The difference in QoL gains was 0.007 (95% CI − 0.010 to 0.023) and the mean improvement in pain intensity was 0.6 (95% CI 0.068–1.065) in favor of manual therapy after one year. Concerning the QoL outcome, the differences in mean cost per person was estimated at − 437 EUR (95% CI − 1302 to 371) and for the pain outcome the difference was − 635 EUR (95% CI − 1587 to 246) in favor of manual therapy. The results indicate that manual therapy achieves better outcomes at lower costs compared with advice to stay active. The sensitivity analyses were consistent with the main results.

    Conclusions

    Our results indicate that manual therapy for nonspecific back and/or neck pain is slightly less costly and more beneficial than advice to stay active for this sample of working age persons. Since manual therapy treatment is at least as cost-effective as evidence-based advice from a physician, it may be recommended for neck and low back pain. Further health economic studies that may confirm those findings are warranted.

    Trial registration Current Controlled Trials ISRCTN56954776. Retrospectively registered 12 September 2006, http://www.isrctn.com/ISRCTN56954776.

    Fulltekst (pdf)
    fulltext
  • 13.
    Ahmadi, Elena
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsa, psykologi och idrottsvetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Managers’ Work, Working Conditions and Wellbeing in Small Companies with Profitable Growth2024Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Background Managers’ work, working conditions and wellbeing are important determinants of occupational health in organizations. Nevertheless, little research has investigated these factors in the context of small growing businesses, which are known to contribute to employment, economic growth and social stability. The aim of this thesis was to explore managers’ work, working conditions and wellbeing in the context of small businesses with profitable growth. 

    Methods Study I used a cross-sectional design to assess patterns in managerial work activities and leadership behaviours. Studies II–IV used qualitative interviews with managers (II–IV) and employees (II) to explore the effects of managers’ wellbeing on their leadership (II), their working conditions (III), and changes in their working conditions and wellbeing in the context of growing small businesses (IV).

    Results Managers worked long hours, posing risks for occupational health, but also adopted work practices that bolster occupational health. Firm size matters for managerial work. Managers’ wellbeing reflected in their mood and energy levels and influenced their leadership behaviours and performance, and the company’s work environment. Managers were more constructive when they felt well, and more passively destructive when they felt unwell. Certain factors mitigated the consequences of their negative behaviours in the organization. Five types of managers’ demands and resources (daily managerial work; achievement of results; and social; organizational; and individual factors) were identified, where the specificity of the small business context revealed unique characteristics. Company growth changed managers’ experiences of working conditions and wellbeing.

    Conclusions The specific context of small growing businesses shaped managers’ work, working conditions and wellbeing and the interplay between them. Dynamism in the organizational context due to growth had implications for managers’ work, working conditions and wellbeing.

    Fulltekst (pdf)
    fulltext
    Download (jpg)
    presentationsbild
  • 14.
    Ahmadi, Elena
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Lundqvist, Daniel
    Department of Behavioural Sciences and Learning, Division of Education and Sociology, Linköping University, Linköping, Sweden.
    Bergström, Gunnar
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Macassa, Gloria
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för folkhälso- och idrottsvetenskap, Folkhälsovetenskap.
    A qualitative study of factors that managers in small companies consider important for their wellbeing2023Inngår i: International Journal of Qualitative Studies on Health and Well-being, ISSN 1748-2623, E-ISSN 1748-2631, Vol. 18, nr 1, artikkel-id 2286669Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose

    Given the importance of small businesses for society, and the significance of managers’ wellbeing for employee health, leadership, and business performance, more knowledge is needed on the sources of managers’ wellbeing. This study explored factors within the small business context that were perceived by managers to hinder or enable their wellbeing.

    Methods

    Data were collected through qualitative semi-structured interviews with 20 managers from 12 small companies, and analysed with content analysis.

    Results

    The factors that these managers in small businesses experienced as enhancing or hindering their personal wellbeing covered five categories: demands and resources in the daily managerial work, achievement of results, social factors, organizational factors, and individual factors.

    Conclusions

    The specific context of managerial work in small companies encompasses unique factors. For instance, the small company managers’ wellbeing was affected by vulnerability due to the smallness of the business and the absence of available resources. Simultaneously, a small company context provided a strong social climate and close relationships with employees and customers that strengthened the managers’ wellbeing. The findings suggest that the availability of financial, personnel, and organizational resources varies between small companies of different size, which may have implications for small business managers’ work and wellbeing.

    Fulltekst (pdf)
    fulltext
  • 15.
    Ahmadi, Elena
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Lundqvist, Daniel
    Linköpings universitet.
    Bergström, Gunnar
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Unit of Intervention and Implementation Research for Worker Health, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
    Macassa, Gloria
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för folkhälso- och idrottsvetenskap, Folkhälsovetenskap. EPIUnit–Instituto de Saude Publica, Universidade do Porto, Porto, Portugal.
    Managers’ and employees’ experiences of how managers’ wellbeing impacts their leadership behaviours in Swedish small businesses2023Inngår i: Work: A journal of Prevention, Assessment and rehabilitation, ISSN 1051-9815, E-ISSN 1875-9270, Vol. 75, nr 1, s. 97-112Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    BACKGROUND:There is a growing interest in managers’ wellbeing due to the observed associations between their wellbeing and leadership behaviours, and between leadership behaviours and employees’ wellbeing. However, it is still unclear how managers’ wellbeing influences their practiced leadership across different workplace contexts, which specific behaviours are affected, and how this varies across time.

    OBJECTIVE:The purpose of this study was therefore to explore managers’ and employees’ experiences and perceptions regarding the consequences of managers’ wellbeing for their leadership behaviours in small businesses.

    METHODS:Semi-structured interviews were conducted with 37 participants (19 managers and 18 employees) working at 12 Swedish small firms, and analysed using content analysis.

    RESULTS:The findings show that managers were more constructive when they felt well, and more passively destructive when unwell. Variations in managers’ wellbeing influenced their mood, energy level, and performance, as well as the company’s working climate. However, these destructive leadership variations did not have a substantial impact, because several protective factors were present.

    CONCLUSION:This study shows that the wellbeing of managers in small businesses has perceptible consequences for their leadership behaviours. The study also shows that sustained leadership behaviours may coexist with temporary variations of these behaviours on a constructive-destructive continuum depending on the leader’s wellbeing. Overall, the findings contribute to a more nuanced and dynamic understanding of how the interaction between managers’ wellbeing and their behaviours unfolds in the particular context of small companies.

    Fulltekst (pdf)
    fulltext
  • 16.
    Ahmadi, Elena
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för psykologi, idrotts- och arbetshälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Lundqvist, Daniel
    Bergström, Gunnar
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för psykologi, idrotts- och arbetshälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Macassa, Gloria
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för socialt arbete, kriminologi och folkhälsovetenskap, Folkhälsovetenskap.
    Managers in the context of small business growth: a qualitative study of working conditions and wellbeingManuskript (preprint) (Annet vitenskapelig)
  • 17.
    Ahmadi, Elena
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Macassa, Gloria
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för folkhälso- och idrottsvetenskap, Folkhälsovetenskap. University of Porto.
    Larsson, Johan
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. LKAB.
    Managers’ work and behaviour patterns in profitable growth SMEs2021Inngår i: Small Business Economics, ISSN 0921-898X, E-ISSN 1573-0913, Vol. 57, s. 849-863Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We investigated managers’ work and behaviour patterns in profitable growth small- and medium-sized Swedish companies, and considered how these patterns might be associated with good health outcomes. Specifically, we looked at hours worked by managers, proportion of time spent on working activities, and leadership behaviour orientation. We used a quantitative cross-sectional design and collected data via a standardized questionnaire that was answered by 133 top managers. The data were analyzed with descriptive statistics, linear regression, and compositional data analysis. Our results indicate that the managers worked long hours, which is a health risk both for them as individuals and for their organizations, but also that they engaged in work practices and leadership behaviours that were favourable for organizational health and for their employees. The managers spent a high proportion of their time in touring, which could be beneficial to organizational health, and exercised active leadership through behaviours that contribute to both employee health and company effectiveness. Comparing our results to other studies, we can observe that patterns of managers’ time use differ between small and large companies, confirming that the size of the firm is an important determinant of managerial work.

    Fulltekst (pdf)
    fulltext
  • 18.
    Ahmadi, Elena
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Macassa, Gloria
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Folkhälsovetenskap.
    Larsson, Johan
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Managers’ working hours and time allocation in effective SMEs – an organizational health perspective2018Inngår i: FALF KONFERENS 2018 Arbetet – problem eller potential för en hållbar livsmiljö?   10-12 juni 2018 Gävle: Program och abstracts / [ed] Per Lindberg, Gävle: Gävle University Press , 2018, s. 118-Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Background

    There is an increased global interest in occupational health across small businesses as they represent a large share of employers in many societies. In the model of healthy work organisations, employee health is a prerequisite for higher productivity and profitability and management practices are considered as determinants of organisational health. A better understanding of how managers in effective companies use their time can offer a better understanding of how this can affect employees’ well-being and business effect-iveness. Managers’ long working hours and share of time spent on Management by Walking Around (MBWA) are considered important characteristics of managers’ work that might have consequences for employees’ and managers’ own health outcomes, as well as for organisational effectiveness. MBWA is a management technique common for successful companies in regard to their effectiveness; providing an opportunity for a spontaneous manager-subordinate interaction that might be important for employee health and wellbeing. Studies of managerial work have to some extent not clearly placed managers’ time use in the broad context of leadership, often missing to link it with leadership behaviour theories, health and effectiveness.

    Objective

    The objective of this study was to explore, on the one hand, the total amount of working hours that managers spent, and on the other, their patterns of time allocation to different activities in effective SMEs. Research questions were: 1) What patterns regarding managers’ working hours can be identified across socio-demographic variables, leader-ship experience factors and leadership profiles in effective SMEs? 2) What patterns regarding proportions of total working hours spent on MBWA can be identified across socio-demographic variables, leadership experience factors and leadership profiles in effective SMEs?

    Method

    The study used data collected within the project, “Successful Companies in Gästrikland”. Annually the project nominates 120 companies for the award based on companies’ financial indicators. The study employed a cross-sectional design and analysed responses to questionnaires collected within the project during years 2014-2018. The inclusion criteria were small and medium sized companies (more than four and less than 250 subordinates), high-level managers having subordinates. Data analysis were carried out using descriptive statistics and regression analysis.

    Results

    The results section is being processed and will be reported on the conference.

  • 19.
    Ahmadi, Elena
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Vilhelmson, Pär
    Högskolan i Gävle, Akademin för utbildning och ekonomi, Avdelningen för ekonomi, Företagsekonomi.
    Macassa, Gloria
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Folkhälsovetenskap.
    Larsson, Johan
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    FRAMFÖR (Framgångsrika företag i Gästrikland): ett longitudinellt projekt om ledarskap, arbetsmiljö och effektivitet – fördel för både forskning, utbildning och ett hållbart arbetsliv?2016Inngår i: Inkluderande och hållbart arbetsliv: Book of abstracts - FALF 2016, Östersund: Mittuniversitetet , 2016, s. 48-48Konferansepaper (Fagfellevurdert)
    Abstract [sv]

    Projektbeskrivning: FRAMFÖR har under 15 år bedrivits i Gästrikland i samarbete mellan utbildning och forskning vid Högskolan i Gävle, företagsutvecklare vid kommuner, företag och näringslivsorganisationer. Varje år delas utmärkelsen FRAMFÖR ut till 50 företag. Ambitionen är att uppmuntra framgångsrika företagare och visa upp intressanta exempel på hur framgång kan skapas. Processen startar med att 120 företag (>4 anställda) nomineras utifrån finansiella kriterier (ex. omsättningstillväxt, vinstmarginal). Sedan genomför studenter vid Ekonomprogrammet intervjuer med cheferna för dessa företag. Intervjuerna sker utifrån ett standardiserat frågeformulär kring arbetsmiljö, ledarskap, organisering och effektivitet. Avslutningsvis väljer en jury ut de 50 mest framgångsrika företagen utifrån såväl finansiella kriterier som studenternas intervjuresultat. Projektets trippel helixuppbyggnad (Utbildning, Forskning och, Företag) skapar nyttor för olika intressenter.

    Utbildningsnyttor: Studenterna får möjlighet till interaktion med företagare i sin direkta närhet. Aktiviteterna underlättar att uppfylla utbildningsmål där flera mål kan uppfyllas med samma aktiviteter. Förståelse för näringslivets förutsättningar samt kunskaper om ett vetenskapligt angreppssätt ökar.

    Forskningsnyttor: Stärker pågående forskning om hälsofrämjande och effektivt ledarskap inom arbetshälsovetenskap samt företagsutveckling inom företagsekonomi. Det stora urvalet av företag ger en bra bild av företagen i regionen och en möjlighet att följa dem över tid. Ambitionen är att få mer kunskap om hållbara och effektiva företag. Fördjupade studier av utmärkelseföretag möjliggörs och ett doktorandprojekt med inriktning på ledarskapsbeteenden, organisationsfaktorer, tidsanvändning samt chefers/medarbetares arbetsmiljö/hälsa i utmärkelseföretag är uppstartat.

    Företagsnyttor: Företagare får möta studenter och förstå hur de tänker. Ställda frågor, t.ex. rörande arbetsmiljö och ledarskap, kan starta reflektionsprocesser som bidrar till fortsatt utveckling. FRAMFÖR-utmärkelsen delas ut vid en högtidlig tillställning där företagarna kan bygga nätverk. Flera företagare lyfter fram det positiva symbolvärdet av att få utmärkelsen.

    Projektets framtid: Målet är att fortsätta ytterligare 15 år och fortsätta utveckla nyttorna för samtliga intressenter. Ett prioriterat område är återkoppling till företag i någon form samt ökad samverkan mellan studenter och företagare.

    Fulltekst (pdf)
    fulltext
  • 20.
    Albert, Frederic
    et al.
    Laboratoire de Neurobiologie Humaine, Université de Provence, Marseille, France.
    Bergenheim, Mikael
    Högskolan i Gävle, Centrum för belastningsskadeforskning. Department of Surgery, Central Hospital Karlstad, Karlstad, Sweden.
    Ribot-Ciscar, Edith
    Laboratoire de Neurobiologie Humaine, Université de Provence, Marseille, France.
    Roll, Jean-Pierre
    Laboratoire de Neurobiologie Humaine, Université de Provence, Marseille, France.
    The Ia afferent feedback of a given movement evokes the illusion of the same movement when returned to the subject via muscle tendon vibration2006Inngår i: Experimental Brain Research, ISSN 0014-4819, E-ISSN 1432-1106, Vol. 172, nr 2, s. 163-174Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aim of the present study was to further investigate the contribution of primary muscle spindle feedback to proprioception and higher brain functions, such as movement trajectory recognition. For this purpose, complex illusory movements were evoked in subjects by applying patterns of muscle tendon vibration mimicking the natural Ia afferent pattern. Ia afferent messages were previously recorded using microneurographic method from the six main muscle groups acting on the ankle joint during imposed "writing like" movements. The mean Ia afferent pattern was calculated for each muscle group and used as a template to pilot each vibrator. Eleven different vibratory patterns were applied to ten volunteers. Subjects were asked both to copy the perceived illusory movements by hand on a digitizing tablet and to recognize and name the corresponding graphic symbol. The results show that the Ia afferent feedback of a given movement evokes the illusion of the same movement when it is applied to the subject via the appropriate pattern of muscle tendon vibration. The geometry and the kinematic parameters of the imposed and illusory movements are very similar and the so-called "two-thirds power law" is present in the reproduction of the vibration-induced illusory movements. Vibrations within the "natural" frequency range of Ia fibres firing (around 30 Hz) produce clear illusions of movements in all the tested subjects. In addition, increasing the mean frequency of the vibration patterns resulted in a linear increase in the size of the illusory movements. Lastly, the subjects were able to recognize and name the symbols evoked by the vibration-induced primary muscle spindle afferent patterns in 83% of the trials. These findings suggest that the "proprioceptive signature" of a given movement is associated with the corresponding "perceptual signature". The neural mechanisms possibly underlying the sensory to perceptual transformation are discussed in the general framework of "the neuronal population vector model".

  • 21.
    Albin, Maria
    et al.
    Institutet för miljömedicin, Karolinska institutet, Stockholm.
    Abrahamsson, Kenneth
    Institutionen för ekonomi, teknik och samhälle, Luleå tekniska universitet, Luelå.
    Lagerlöf, Elisabeth
    Info2you.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Symposium: Hållbart arbetsliv i framtidens Europa – lägesrapport och utmaningar inför nästa EU ramprogram FP92018Inngår i: FALF KONFERENS 2018 Arbetet – problem eller potential för en hållbar livsmiljö?   10-12 juni 2018 Gävle: Program och abstracts / [ed] Lindberg, Per, Gävle: Gävle University Press , 2018, s. 98-99Konferansepaper (Fagfellevurdert)
    Abstract [sv]

    Under senaste året har det inom EU pågått ett rådslag om en europeisk pelare för sociala rättigheter som syftat till ett fungerande samspel mellan social trygghet och ekonomisk förändring. Ett toppmöte för rättvisa jobb och tillväxt ägde rum i Göteborg hösten 2017, som fokuserade på hur man kan främja inkluderande tillväxt, skapa rättvisa jobb och främja lika möjligheter för alla kvinnor och män. Vid mötet redovisades också erfaren-heter av arbetslivspolitik och praktiska insatser från olika EU länder.

    Uppmärksamhet ägnades också områden som nya arbetsformer, förutsättningar för flexibilitet och trygghet, samspelet mellan löner, arbetsförhållanden, arbetsmiljö. Vidare berördes balansen mellan social trygghet och socialt skydd å ena sidan och produktivitet, ekonomisk utveckling och tillväxt å den andra. De bestående skillnaderna mellan män och kvinnor avseende anställning, arbetsförhållanden, karriärmöjligheter, lön och pension uppmärksammades också. Effekter av att befolkningen åldras eller av automatisering och digitalisering var ett annat policyområde. Sammantaget lyfte toppmötet fram strategiska frågor för den framtida arbetslivsforskningen på europeiskt plan – i denna utmaning ligger också att öka samspelet mellan forskning i Sverige och forskning i Europa.

    Svensk arbetslivsforskning behöver synas mer i ett europeiskt sammanhang och europeisk forskning och kunskapsutveckling bör bättre tas tillvara i Sverige. Med stöd av VINNOVA startades år 2013 en påverkansplattform för att lyfta fram hållbart arbetsliv som ett centralt och övergripande område i EU:s åttonde ramprogram för forskning, Horisont 2020. Motiven därtill är uppenbara; digitalisering, globalisering och en ny demografi med ökad livslängd och migration. Vi lever också i en tid med snabbare om-ställning i arbetslivet och där de traditionella arbetsmarknadsrelationerna tenderar att luckras upp.

    Syftet med denna session är dels att rapportera vad som gjorts i det Vinnova-finansierade projektet om hållbart arbetsliv i EU som nu avslutas under 2018, dels lyfta och dryfta idéer och förslag om vilken roll hållbart arbetsliv kan spela inom FP 9 – det nästa ramprogrammet som startar 2021. När det gäller det första syftet handlar det om att utveckla kontakter med EU:s institutioner som DG research, Eurofound och EU_OSHA, liksom med de europeiska arbetsmiljöforskningsinstitutionerna via PEROSH, samt forskarnätverk och parter i Europa. En annan metod har varit att ge förslag på områden som borde lyftas fram i kommande utlysningar, vilket har skett genom workshops i Bryssel och annorstädes. Vi har också verkat för att svenska forskare i ökad utsträckning kan medverka i EU-finansierade projekt, exempelvis genom att ta initiativ till forsknings-program eller delta som partner i nätverk som koordineras av forskare på europeiskt plan. Sedan något år tillbaka har en diskussion startats om FP9 – EU:s nionde ramprogram för forskning. Diskussionen utgår från professor Mariana Mazzucatos rapport Mission Oriented Research & Innovations in the European Union: A problem-solving approach to fuel innovation-led growth. Vid seminariet ges också en lägesbild om vad som är på gång i detta sammanhang både via formella och informella kanaler. Sessionen bygger vidare på en workshop som projektet genomförde i Stockholm i början av november 2017 – se:

    - www.sustainablework220.se

    - https://ec.europa.eu/info/sites/info/files/mazzucato_report_2018.pdf

  • 22.
    Aleksandrov, A. A.
    et al.
    St Petersburg State University, Russia.
    Deinekina, T. S.
    St Petersburg State University, Russia.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Lyskov, Eugene B.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    ВЛИЯНИЕ НАБЛЮДЕНИЯ ЗА ДВИЖЕНИЕМ НА ВОССТАНОВЛЕНИЕ РАБОТОСПОСОБНОСТИ ПОСЛЕ ФИЗИЧЕСКОГО УТОМЛЕНИЯ [The influence of movement's observation on recuperation after physical fatigue]2014Inngår i: Zurnal vyssej nervnoj deâtel'nosti im. I.P. Pavlova, ISSN 0044-4677, Vol. 64, nr 5, s. 481-487Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The study aim was to investigate effects of mental activity, accompanied by mu-rhythm depression, on recuperation after physical fatigue. In a study participants performed 11 one minute bouts of static hand grip intermitted by 2 minutes rest pauses. During pauses participants watched video with either dynamic hand grips (biological movements) or deformation of geometric figure (control). Obtained data showed there was a significant depression of mu-rhythm during biological movement's observation. There was significant fatigue of subjects in an exercise with physical activity, but there was no reliable influence of performed mental activity on recovery after fatigue.

  • 23.
    Andersson, Linus
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Department of Psychology, Umeå University, Umeå, Sweden.
    Claeson, Anna-Sara
    Department of Psychology, Umeå University, Umeå, Sweden.
    Not getting used to the smell – Chemical intolerance as lack of habituation2017Inngår i: Biological Psychology, ISSN 0301-0511, E-ISSN 1873-6246, Vol. 129, nr Suppl. C, s. 377-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background:

    Chemical intolerance is a prevalent, medically unexplained symptom characterized by diverse symptoms following weak chemical exposure. The symptom-eliciting exposures are often odorous, and include perfume, fabric softeners and fragrant flowers. Several explanatory mechanisms have been proposed, but empirical data is scarce. By reanalyzing data from previous studies, we aimed to find a criterion for chemical intolerance based on reactions to actual chemical exposure.

    Method:

    We grouped participants from six previous studies based on their pattern of habituation to weak olfactory (amylacetate and n-butanol) and trigeminal (CO2 and acrolein) compounds. In two studies utilizing event-related potentials, and one functional magnetic resonance imaging study, stimuli were presented intranasally using a dynamic olfactometer. An exposure chamber that allowed full body exposure was used in the remaining three studies.

    Results:

    Individuals who did not habituate to weak chemical exposure, compared with those who did, reported (1) increasing symptoms during the course of the exposure, (2) greater problems with odors in everyday life, and (3) greater levels of everyday distress. They (4) performed worse on cognitively demanding tasks during exposure, and differed in measures of (5) the autonomic nervoussystem(respiratoryrateandpulseratevariability),(6)low-level inflammation and oxidative stress, and (7) the so called pain matrix of the brain.

    Discussion:

    Lack of habituation to weak chemical exposure may be a fruitful method of defining a sub-group of chemical intolerance.

  • 24.
    Andersson, Linus
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Claeson, Anna-Sara
    Department of Psychology, Umeå University, Umeå, Sweden.
    Dantoft, Thomas Meinertz
    Danish Research Centre for Chemical Sensitivities, Copenhagen University Hospital Gentofte, Gentofte, Denmark; Department of Systems Biology, Center for Biological Sequence Analysis, Technical University of Denmark, Lyngby, Denmark.
    Skovbjerg, Sine
    Danish Research Centre for Chemical Sensitivities, Copenhagen University Hospital Gentofte, Gentofte, Denmark.
    Lind, Nina
    Department of Psychology, Umeå University, Umeå, Sweden.
    Nordin, Steven
    Department of Psychology, Umeå University, Umeå, Sweden.
    Chemosensory perception, symptoms and autonomic responses during chemical exposure in multiple chemical sensitivity2016Inngår i: International Archives of Occupational and Environmental Health, ISSN 0340-0131, E-ISSN 1432-1246, Vol. 89, nr 1, s. 79-88Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    PURPOSE: Multiple chemical sensitivity (MCS) is a prevalent medically unexplained symptom characterized by symptom reactions to everyday chemical exposure below hygienic thresholds. The aim of this study was to investigate the expressions of hyper-reactivity in MCS during whole-body exposure to low concentrations of the odorant n-butanol.

    METHODS: We exposed 18 participants with MCS and 18 non-ill controls to a low concentration of the odorant n-butanol using an exposure chamber. The first 10 min constituted blank exposure, after which the n-butanol concentration increased and reached a plateau at 11.5 mg/m(3).

    RESULTS: MCS participants, compared with controls, reported greater perceived odor intensities, more unpleasantness to the exposure and increasing symptoms over time. MCS participants also expressed higher pulse rate and lower pulse rate variability than controls did. No group differences were found for breathing rate or tonic electrodermal activity responses.

    CONCLUSIONS: We conclude that MCS sufferers differ from healthy controls in terms of autonomic responses, symptoms and chemosensory perception during chemical exposure.

  • 25.
    Andersson, Linus
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Department of Psychology, Umeå University, Umeå, Sweden.
    Claeson, Anna-Sara
    Department of Psychology, Umeå University, Umeå, Sweden.
    Nyberg, Lars
    Department of Integrative Medical Biology and Physiology, Umeå University, Umeå, Sweden; Department of Radiation Sciences, Umeå University, Umeå, Sweden.
    Nordin, Steven
    Department of Psychology, Umeå University, Umeå, Sweden.
    Short-term olfactory sensitization involves brain networks relevant for pain, and indicates chemical intolerance2017Inngår i: International journal of hygiene and environmental health (Print), ISSN 1438-4639, E-ISSN 1618-131X, Vol. 220, nr 2, s. 503-509Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Chemical intolerance is a medically unexplained affliction that implies deleterious reactions to non-toxic everyday chemical exposure. Sensitization (i.e. increased reactivity to repeated, invariant stimulation) to odorous stimulation is an important component in theoretical explanations of chemical intolerance, but empirical evidence is scarce. We hypothesized that (1) individuals who sensitize to repeated olfactory stimulation, compared with those who habituate, would express a lower blood oxygenated level dependent (BOLD) response in key inhibitory areas such as the rACC, and higher signal in pain/saliency detection regions, as well as primary and/or secondary olfactory projection areas; and (2) olfactory sensitization, compared with habituation, would be associated with greater self-reported chemical intolerance. Moreover, we assessed whether olfactory sensitization was paralleled by comparable trigeminal processing – in terms of perceptual ratings and BOLD responses. We grouped women from a previous functional magnetic imaging study based on intensity ratings of repeated amyl acetate exposure over time. Fourteen women sensitized to the exposure, 15 habituated, and 20 were considered “intermediate” (i.e. neither sensitizers nor habituaters). Olfactory sensitizers, compared with habituaters, displayed a BOLD-pattern in line with the hypothesis, and reported greater problems with odours in everyday life. They also expressed greater reactions to CO2 in terms of both perceived intensity and BOLD signal. The similarities with pain are discussed.

  • 26.
    Andersson, Linus
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Claeson, Anna-Sara
    Department of Psychology, Umeå University, Sweden.
    Sandberg, Petra
    Department of Psychology, Umeå University, Sweden.
    Highlighting the large variation in perceived properties of odors over time2017Inngår i: Chemical Senses, ISSN 0379-864X, E-ISSN 1464-3553, Vol. 42, nr 2, s. E26-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Individuals differ considerably when rating the perceived properties of odors, especially over time. A second glance at previously published data-sets from our laboratory revealed that the same invariant exposure often produced both floor and roof effects. An odor that at the end of the exposure ses-sion was regarded as non-existent by one participant, could border the “absoulte maximum” rating category in another. We provide re-analyses from four exposure studies where we illustrate the perceptual variability over time, and outcomes associated with such ratings. We note that high, compared with low ratings of odor intensity over time is associated with ratings of unpleasantness and symptoms, but also with everyday distress, cognitive performance, autonomous nerv-ous system activity and deviating responses in the so-called pain or saliency matrix of the brain. We bring an open ques-tion to ECRO regarding how this considerable variability should be interpreted, and what the consequenced are for research and for setting exposure limits.

  • 27.
    Andersson, Linus
    et al.
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Department of Psychology, Umeå University, Umeå, Sweden.
    Sandberg, Petra
    Department of Psychology, Umeå University, Umeå, Sweden.
    Olofsson, Jonas K.
    Department of Psychology, Stockholm University, Stockholm, Sweden.
    Nordin, Steven
    Department of Psychology, Umeå University, Umeå, Sweden.
    Effects of Task Demands on Olfactory, Auditory, and Visual Event-Related Potentials Suggest Similar Top-Down Modulation Across Senses2018Inngår i: Chemical Senses, ISSN 0379-864X, E-ISSN 1464-3553, Vol. 43, nr 2, s. 129-134, artikkel-id bjx082Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A widely held view is that top-down modulation of sensory information relies on an amodal control network that acts through the thalamus to regulate incoming signals. Olfaction lacks a direct thalamic projection, which suggests that it may differ from other modalities in this regard. We investigated the late positive complex (LPC) amplitudes of event-related potentials (ERP) from 28 participants, elicited by intensity-matched olfactory, auditory and visual stimuli, during a condition of focused attention, a neutral condition, and a condition in which stimuli were to be actively ignored. Amplitudes were largest during the attend condition, lowest during the ignore condition, with the neutral condition in between. A Bayesian analysis resulted in strong evidence for similar effects of task across sensory modalities. We conclude that olfaction, despite its unique neural projections, does not differ from audition and vision in terms of task-dependent neural modulation of the LPC.

  • 28.
    Anderzén, Ingrid
    et al.
    Department of Public Health and Caring Sciences, Uppsala University.
    Karlsson, Thomas
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Strömberg, Annika
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för socialt arbete och psykologi, Socialt arbete.
    Gustafsson, Susanne
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Folkhälsovetenskap.
    Lindberg, Per
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Predictors of Well-being at work2016Inngår i: Scientific Programme: Wellbeing at Work 2016, 2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The concept of healthy workplace has been defined as an organization that maximizes the integration of worker goals for wellbeing and company objectives for profitability and productivity. Conditions in today’s working life make new approaches necessary in order to limit negative health effects of work and to enhance wellbeing and health at work. About 24 % of the working population in Sweden report to have had work-related disorders during the last twelve months. In order to achieve a sustainable working life it is likely that strategies and actions from different and new angles are needed.ObjectivesThe present study is a part of a larger study (the GodA –study; a Swedish acronym for good work environments and healthy workplaces) and aims to investigate how work environment factors, work ability, work motivation, work and life balance predict well-being at work.

    Methods

    The GodA study is a 2-year follow up study in Sweden with a survey feedback design in three companies with both blue- and white collar workers. One of the companies serves as “intervention-company”, the other two as controls. A baseline questionnaire was sent out 2013 and the results from the survey were reported back to the companies, which have been processing their results. In spring 2015 a follow up survey has been administered. Data have been analysed with univariate and multivariate linear regression analyses.

    Results

    A baseline multivariate linear regression model, which included background factors, perceived psychosocial work climate and work environmental factors (motivation, leadership, employee responsibilities, efficacy, work ability and management committed to employee health) and work life balance, showed that psychosocial work climate (B= .48, 95% CI=.27 – .69) leadership, (B= .27, 95% CI=.05– .49), work ability (B= -.12, 95% CI= .03 – .21), motivation (B= -33, 95% CI= .14 – .51) and work life balance (B= -.34, 95% CI=-.57– -.12), were signifi-cantly associated with well-being at work and explained 40% of the variance (Adjusted R2=.40, p<.001).

    Conclusions

    Results showed that not only work environment factors are important predictors. To maintain a healthy work place a promotion of balance between work and private life is needed.

  • 29.
    Anderzén, Ingrid
    et al.
    Department of Public Health and Caring Sciences, Uppsala University.
    Lindberg, Per
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Karlsson, Thomas
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Strömberg, Annika
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för socialt arbete och psykologi, Socialt arbete.
    Gustafsson, Susanne
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Folkhälsovetenskap.
    Predictors of well-being at work2015Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    Background

    The concept of healthy workplace has been defined as an organization that maximizes the integration of worker goals for wellbeing and company objectives for profitability and productivity. Conditions in today’s working life make new approaches necessary in order to limit negative health effects of work and to enhance wellbeing and health at work. About 24 % of the working population in Sweden report to have had work-related disorders during the last twelve months. In order to achieve a sustainable working life it is likely that strategies and actions from different and new angles are needed.

    The present study is a part of a larger study (the GodA –study; a Swedish acronym for good work environments and healthy workplaces) and aims to investigate how work environment factors, work ability, work motivation, work and life balance predict well-being at work.

    Methods

    The GodA study is a 2-year follow up study in Sweden with a survey feedback design in three companies with both blue- and white collar workers. One of the companies serves as “intervention-company”, the other two as controls. A baseline questionnaire was sent out 2013 and the results from the survey were reported back to the companies, which have been processing their results. In spring 2015 a follow up survey has been administered. Data from the baseline measurements have been analysed with univariate and multivariate linear regression analyses.

    Results

    A baseline multivariate linear regression model, which included background factors, perceived psychosocial work climate and work environmental factors (motivation, leadership, employee responsibilities, efficacy, work ability and management committed to employee health) and work life balance, showed that psychosocial work climate (B= .48, 95% CI=.27 – .69) leadership, (B= .27, 95% CI=.05– .49), work ability  (B= -.12, 95% CI= .03 – .21), motivation (B= -33, 95% CI= .14 – .51) and work life balance (B= -.34, 95% CI=-.57– -.12), were significantly associated with well-being at work and explained 40% of the variance  (Adjusted R2=.40, p<.001). Results from the two-year follow up will be presented at the conference.

    Conclusions

    Results showed that not only work environment factors are important predictors. To maintain ahealthy work place apromotion ofbalancebetween workand private life is needed.

  • 30.
    Aronsson, G
    et al.
    Stockholm University.
    Hagberg, J
    Karolinska Institutet.
    Björklund, C
    Karolinska Institutet.
    Aboagye, Emmanuel
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Karolinska Institutet.
    Marklund, S
    Karolinska Institutet.
    Leineweber, C
    Stockholm University.
    Bergström, Gunnar
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Karolinska Institutet.
    Health and motivation as mediators of the effects of job demands, job control, job support, and role conflicts at work and home on sickness presenteeism and absenteeism2021Inngår i: International Archives of Occupational and Environmental Health, ISSN 0340-0131, E-ISSN 1432-1246, Vol. 94, s. 409-418Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose: The first objective was to contribute to a better understanding of the contrasting and paradoxical results in studies of work environment factors and sickness presence and sickness absence. A second objective was to examine if, and under what conditions, employees choose to replace sickness absence with sickness presence, i.e., so-called substitution.

    Methods: The study utilizes a large body of cross-sectional questionnaire data (n = 130,161) gathered in Sweden from 2002 to 2007 in connection with a comprehensive health promotion initiative. Health and motivation were analyzed as mediators of the effects of five job factors, job control, job support, job demand, role conflict and "work to family conflict" on sickness presence and absence.

    Results: The results concerning job demands indicate substitution in that increased job demands are associated with increased presenteeism and reduced absenteeism. The direct effect of higher job support was increased absenteeism, but via the health and motivation paths, the total effect of more social support was health-promoting and associated with a reduction in sickness absence and sickness presence. High job control emerged as the most pronounced health-promoting factor, reducing sickness presenteeism as well as absenteeism. More role conflicts and work-to-family conflicts were directly and indirectly associated with decreased health and increased absenteeism as well as presenteeism. earlier research.

    Conclusion: The mediation analyzes shed light on some of the paradoxes in research on sickness presenteeism and sickness absenteeism, especially regarding job demands and job support. The substitution effect is important for workplace policy and occupational health practice.

    Fulltekst (pdf)
    fulltext
  • 31.
    Arumugam, Ashokan
    et al.
    University of Sharjah, UAE.
    Björklund, Martin
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Umeå universitet.
    Mikko, Sanna
    Umeå universitet.
    Häger, Charlotte K
    Effects of neuromuscular training on knee proprioception in individuals with anterior cruciate ligament injury: a systematic review and GRADE evidence synthesis2021Inngår i: BMJ Open, E-ISSN 2044-6055, Vol. 11, nr 5, artikkel-id e049226Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Objective To systematically review and summarise the evidence for the effects of neuromuscular training compared with any other therapy (conventional training/sham) on knee proprioception following anterior cruciate ligament (ACL) injury.Design Systematic Review.

    Data sources PubMed, CINAHL, SPORTDiscus, AMED, Scopus and Physical Education Index were searched from inception to February 2020.

    Eligibility criteria Randomised controlled trials (RCTs) and controlled clinical trials investigating the effects of neuromuscular training on knee-specific proprioception tests following a unilateral ACL injury were included.

    Data extraction and synthesis Two reviewers independently screened and extracted data and assessed risk of bias of the eligible studies using the Cochrane risk of bias 2 tool. Overall certainty in evidence was determined using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) tool.Results Of 2706 articles retrieved, only 9 RCTs, comprising 327 individuals with an ACL reconstruction (ACLR), met the inclusion criteria. Neuromuscular training interventions varied across studies: whole body vibration therapy, Nintendo-Wii-Fit training, balance training, sport-specific exercises, backward walking, etc. Outcome measures included joint position sense (JPS; n=7), thresholds to detect passive motion (TTDPM; n=3) or quadriceps force control (QFC; n=1). Overall, between-group mean differences indicated inconsistent findings with an increase or decrease of errors associated with JPS by ≤2°, TTDPM by ≤1.5° and QFC by ≤6 Nm in the ACLR knee following neuromuscular training. Owing to serious concerns with three or more GRADE domains (risk of bias, inconsistency, indirectness or imprecision associated with the findings) for each outcome of interest across studies, the certainty of evidence was very low.

    Conclusions The heterogeneity of interventions, methodological limitations, inconsistency of effects (on JPS/TTDPM/QFC) preclude recommendation of one optimal neuromuscular training intervention for improving proprioception following ACL injury in clinical practice. There is a need for methodologically robust RCTs with homogenous populations with ACL injury (managed conservatively or with reconstruction), novel/well-designed neuromuscular training and valid proprioception assessments, which also seem to be lacking.

    PROSPERO registration number CRD42018107349.

    Fulltekst (pdf)
    fulltext
  • 32.
    Arvidsson, Inger
    et al.
    Division of Occupational and Environmental Medicine, University Hospital, Lund, Sweden.
    Hansson, Gert-Ake
    Division of Occupational and Environmental Medicine, University Hospital, Lund, Sweden.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Skerfving, Staffan
    Division of Occupational and Environmental Medicine, University Hospital, Lund, Sweden.
    Neck postures in air traffic controllers with and without neck/shoulder disorders2008Inngår i: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126, Vol. 39, nr 2, s. 255-260Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Prolonged computer work with an extended neck is commonly believed to be associated with an increased risk of neck-shoulder disorders. The aim of this study was to compare neck postures during computer work between female cases with neck-shoulder disorders, and healthy referents. Based on physical examinations, 13 cases and 11 referents were selected among 70 female air traffic controllers with the same computer-based work tasks and identical work stations. Postures and movements were measured by inclinometers, placed on the forehead and upper back (C7/Th1) during authentic air traffic control. A recently developed method was applied to assess flexion/extension in the neck, calculated as the difference between head and upper back flexion/extension. Results: Cases and referents did not differ significantly in neck posture (median neck flexion/extension: -10° vs. -9°; p=0.9). Hence, the belief that neck extension posture is associated with neck-shoulder disorders in computer work is not supported by the present data

  • 33.
    Arvidsson, Inger
    et al.
    Department of Occupational and Environmental Medicine, Lund University Hospital, Lund, Sweden.
    Hansson, Gert-Åke
    Department of Occupational and Environmental Medicine, Lund University Hospital, Lund, Sweden.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Skerfving, Staffan
    Department of Occupational and Environmental Medicine, Lund University Hospital, Lund, Sweden.
    Changes in physical workload with implementation of mouse-based information technology in air traffic control2006Inngår i: International Journal of Industrial Ergonomics, ISSN 0169-8141, E-ISSN 1872-8219, Vol. 36, nr 7, s. 613-622Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Effects on physical workload were quantified when introducing new information technology in air traffic control. Seven female and seven male air traffic controllers were studied in an old control system, and during simulated - but similar - work in a new, mouse-based system. Postures, movements and muscular load were recorded (inclinometry for head, neck, back and upper arms; goniometry for wrists; electromyography for the trapezius and forearm extensor muscles). The new system was associated with lower movement velocities than the old one (examples; [50th percentiles] head flexion: 2 vs. 5 o/s, P<0.01; right arm elevation: 3 vs. 6 o/s; P<0.01; [90th percentile] wrist flexion: 19 vs. 50 o/s, P<0.01), less varying postures (head: 95th-5th percentile range 17° vs. 34o; P<0.01), and less muscular rest in the right forearm extensors (3.5 vs. 9% of time; P<0.05). The old/new system differences were amplified at high work intensities. The new air traffic control system caused a major change of physical exposures, probably associated with an increased risk of musculoskeletal disorders in arms and hands.

    Relevance to industry

    While this study concerned the specific changes in the introduction of a new air traffic control system, we believe that the findings are applicable to similar technological developments in other settings.

  • 34. Arvidsson, Inger
    et al.
    Hansson, Gert-Åke
    Mathiassen, Svend-Erik
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Skerfving, S
    Physical workload and musculoskeletal disorders in computerized work, among air traffic controllers2007Inngår i: Work With Computing Systems - WWCS 2007, Stockholm: abstracts WWCS 2007 : Computing systems for human benefits from the 8th International Conference on Work With Computing Systems : May 21st-24th 2007, Stockholm Sweden, Stockholm: Royal institute of technology , 2007, s. 42-42Konferansepaper (Annet (populærvitenskap, debatt, mm))
  • 35. Arvidsson, Inger
    et al.
    Hansson, Gert-Åke
    Mathiassen, Svend-Erik
    Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Skerfving, Staffan
    Are neck-shoulder disorders associated with habitual neck extension in computer work?2006Inngår i: Meeting diversity in ergonomics: IEA 2006, 16th World Congress on Ergonomics / [ed] Pikaar R N, Koningsveld E A P, Settels P J M, 2006Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    A common clinical conception is that prolonged neck extension during computer work is associated with an increased risk of neck-shoulder disorders. The aim of this study was to find out whether neck postures in computer work differed between females cases with neck-shoulderdisorders, compared to healthy referents.

    Based on physical examinations, 13 cases and 11 referents were selected among 70 female air traffic controllers with the same computer work and identical work stations. Neck angles were measured by inclinometry, during an ordinary work period of about 1 h. Results: Average neck angles (50thpercentile) in cases and referents was -10° (SP 8) and -9 (SD 10) respectively; p=0.9. Hence, we did not find any association between neck-shoulder disorders and neck extension during computer work.

  • 36.
    Axén, Iben
    et al.
    Karolinska Institutet.
    Björk Brämberg, Elisabeth
    Sahlgrenska Academy, University of Gothenburg; Karolinska Institutet.
    Vaez, Marjan
    Karolinska Institutet.
    Lundin, Andreas
    Karolinska Institutet.
    Bergström, Gunnar
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Karolinska Institutet.
    Interventions for common mental disorders in the occupational health service: a systematic review with a narrative synthesis2020Inngår i: International Archives of Occupational and Environmental Health, ISSN 0340-0131, E-ISSN 1432-1246, Vol. 93, nr 7, s. 823-838Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Introduction

    Common mental disorders (CMD) are leading causes of decreased workability in Sweden and worldwide. Effective interventions to prevent or treat such disorders are important for public health.

    Objective

    To synthesize the research literature regarding occupational health service (OHS) interventions targeting prevention or reduction of CMD among employees. The effect on workability (sickness absence, return-to-work and self-reported workability) and on CMD symptoms was evaluated in a narrative analysis.

    Data sources

    The literature search was performed in four electronic databases in two searches, in 2014 and in 2017.

    Eligibility criteria (using PICO)

    Population: studies investigating employees at risk or diagnosed with CMD, as well as preventive workplace intervention targeting mental health. Intervention: studies where the recruitment or the intervention was delivered by the OHS or OHS personnel were included. Control: individuals or groups who did not receive the target intervention. Outcome: all types of outcomes concerning sickness absence and psychological health were included.

    Study quality was assessed using a Swedish AMSTAR-based checklist, and results from studies with low or medium risk of bias were narratively synthesized based on effect or absence thereof.

    Results

    Thirty-three studies were included and assessed for risk of bias. Twenty-one studies had low or medium risk of bias. In 18 studies, rehabilitation interventions were evaluated, 11 studies concerned interventions targeting employees at risk for developing CMD and four studies investigated preventive interventions. Work-focused cognitive behavioral therapy and problem-solving skill interventions decreased time to first return-to-work among employees on sick leave for CMD in comparison with treatment-as-usual. However, effect on return to full-time work was not consistent, and these interventions did not consistently improve CMD symptoms. Selective interventions targeting employees at risk of CMD and preventive interventions for employees were heterogeneous, so replication of these studies is necessary to evaluate effect.

    Limitations

    Other workplace interventions outside the OHS may have been missed by our search. There was considerable heterogeneity in the included studies, and most studies were investigating measures targeting the individual worker. Interventions at the workplace/organizational level were less common.

    Conclusions and implication of key findings

    Return-to-work and improvement of CMD symptoms are poorly correlated and should be addressed simultaneously in future interventions. Further, interventions for CMD administered through the occupational health service require further study. Rehabilitative and preventive strategies should be evaluated with scientifically robust methods, to examine the effectiveness of such interventions.

  • 37.
    Bakken, Anders Galaasen
    et al.
    Karolinska institutet.
    Eklund, Andreas
    Karolinska institutet.
    Warnqvist, Anna
    Karolinska institutet.
    O’Neill, Søren
    University Hospital of Southern Denmark.
    Hallman, David
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Axén, Iben
    Karolinska institutet.
    Are changes in pain associated with changes in heart rate variability in patients treated for recurrent or persistent neck pain?2022Inngår i: BMC Musculoskeletal Disorders, E-ISSN 1471-2474, Vol. 23, nr 1, artikkel-id 895Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background

    Persistent or recurrent neck pain is associated with perturbations in the autonomic nervous system balance, and nociceptive stimulation has been seen to influence this balance. However, very few prospective studies have addressed the extent to which changes in pain associate with changes in autonomic cardiac regulation. Therefore, we investigated if changes in pain vary with changes in heart rate variability in a cohort of patients treated for persistent or recurrent neck pain.

    Method

    This analysis is based on data from a randomized controlled trial in which participants were given home stretching exercises with or without spinal manipulative therapy for two weeks. As the effectiveness of the intervention (home stretching exercises and spinal manipulative therapy) was found to be equal to the control (home stretching exercises alone), all 127 participants were studied as one cohort in this analysis. During the intervention, pain levels were recorded using daily text messages, and heart rate variability was measured in the clinics three times over two weeks. Two approaches were used to classify patients based on changes in pain intensity: 1) Clinically important changes in pain were categorized as either "improved" or "not improved" and, 2) Pain development was measured using pain trajectories, constructed in a data driven approach. The association of pain categories and trajectories with changes in heart rate variability indices over time were then analysed using linear mixed models.

    Results

    Heart rate variability did not differ significantly between improved and not-improved patients, nor were there any associations with the different pain trajectories.

    Conclusions

    In conclusion, changes in pain after home stretching exercises with or without spinal manipulative therapy over two weeks were not significantly associated with changes in heart rate variability for patients with persistent or recurrent neck pain. Future studies should rely on more frequent measurements of HRV during longer treatment periods.

    Trial registrationThe trial was registered at ClinicalTrials.gov, registration number: NCT03576846.

    Fulltekst (pdf)
    fulltext
  • 38.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of São Carlos,.
    Brusaca, Luiz Augusto
    Department of Physical Therapy, Federal University of São Carlos,.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos,.
    Effects of time in sitting and standing on pleasantness, acceptability, fatigue and pain when using a sit-stand table: an experiment on overweight and normal-weight subjects2020Inngår i: Journal of Physical Activity and Health, ISSN 1543-3080, E-ISSN 1543-5474, Vol. 17, nr 12, s. 1222-1230Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Sit-stand desks have been suggested as an initiative to increase posture variation among office workers. However, there is limited evidence of what would be preferable combinations of time sitting and standing. The aim of this study was to determine and compare perceived pleasantness, acceptability, pain and fatigue for five time patterns of sitting and standing at a sit-stand desk.

    Methods: Thirty post-graduate students were equally divided into a normal-weight (mean BMI 22.8 kg/m2) and an overweight/obese (mean BMI 28.1 kg/m2) group. They performed 3 hours of computer work at a sit-stand desk on five different days, each day with a different time pattern (A: 60-min sit/0-min stand; B: 50/10; C: 40/20; D: 30/30; E: 20/40). Pleasantness, acceptability, pain and fatigue ratings were obtained at the beginning and at the end of the 3-hour period.

    Results: High ratings of pleasantness were observed for time patterns B, C and D in both groups. All participants rated acceptability to be good for time patterns A to D. A minor increase in perceived fatigue and pain was observed in time pattern E.

    Conclusion: For new sit-stand desk users, regardless of BMI, 10-30 min of standing per hour appears to be an amenable time pattern.

  • 39.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of São Carlos.
    Brusaca, Luiz Augusto
    Department of Physical Therapy, Federal University of São Carlos.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Srinivasan, Divya
    Department of Industrial Engineering, Clemson University, USA.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos.
    Effects on variation in shoulder, forearm and low back muscle activity from combining seated computer work with other productive office tasks: Results from a simulation study2022Inngår i: Ergonomics, ISSN 0014-0139, E-ISSN 1366-5847, Vol. 65, nr 6, s. 815-827Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The effect on muscle activity variation of combining different office tasks is not known. We recorded electromyography from the upper trapezius (UT), wrist extensor (WE) and lumbar erector spinae (LES) in 24 office workers during five productive tasks, and breaks. Minute-to-minute variance was then estimated, by simulations, in a reference ‘job’ consisting of 85% sitting computer work and 15% breaks, and in ‘jobs’ where sitting computer work was replaced by different proportions of the other office tasks and breaks. Replacing sitting computer work with sitting non-computer work increased estimated variance by, in median, 23% (UT), 19% (WE) and 0% (LES). Replacing it by other tasks, in particular standing computer work and non-desk work, was less effective in increasing variance. Thus, some combinations of office tasks have a slight potential to increase muscle activity variation in the shoulder and lower arm, but not the lumbar back, while others will be ineffective.

  • 40.
    Barbieri, Dechristian
    et al.
    Laboratory of Clinical and Occupational Kinesiology, Department of Physical Therapy, Federal University of São Carlos.
    Brusaca, Luiz Augusto
    Laboratory of Clinical and Occupational Kinesiology, Department of Physical Therapy, Federal University of São Carlos.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Srinivasan, Divya
    Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University.
    Oliveira, Ana Beatriz
    Laboratory of Clinical and Occupational Kinesiology, Department of Physical Therapy, Federal University of São Carlos, São Carlos.
    To Which Extent do Combinations of Office Tasks Influence Variation in Upper Extremity Muscle Activity? A Simulation Study2021Inngår i: Proceedings of the International Ergonomics Association conference 2021, 2021Konferansepaper (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 41.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of São Carlos.
    Brusaca, Luiz
    Department of Physical Therapy, Federal University of São Carlos.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos.
    Srinivasan, Divya
    Department of Industrial Engineering, Clemson University.
    Do sit-stand tables affect physical behavior and body composition similarly in normal-weight and overweight office workers? A pilot study2023Inngår i: IISE Transactions on Occupational Ergonomics and Human Factors, ISSN 2472-5838, Vol. 11, nr 3-4, s. 81-93Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: A sit-stand table (SST) at work may help office workers shorten and break up sitting by periods of standing. However, it is not clear whether SST use influences sitting at and outside work to similar extents among normal-weight and overweight office workers, and whether it can change body composition.

    Purpose: To investigate if introducing SSTs affects physical behavior and body composition similarly in normal-weight and overweight office workers.

    Methods: In this pilot intervention study, physical behavior and body composition were evaluated and compared between normal-weight (n=8) and overweight (n=14) office workers, both before and after using a SST for 6 months. Time spent sitting, standing, and moving was recorded using a triaxial thigh accelerometer during work and leisure. Dual-energy x-ray absorptiometry was used to determine fat, lean, and bone mass. Physical behavior and body composition data were both processed using compositional data analysis.

    Results: The intervention was similarly effective for normal weight and overweight workers in changing physical behavior during work, mainly by reducing sitting time and increasing standing time, while no effects were seen during leisure. We found no effect of the intervention on body composition.

    Conclusion: A sit-stand table intervention for 6 months changed physical behaviors at work to a similar extent among normal weight and overweight office workers. No compensatory behaviors were observed during leisure, and the intervention had no significant effects on body composition.

  • 42.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of São Carlos, São Paulo, BRAZIL.
    dos Santos, Wilian
    Department of Mechatronics Engineering, University of São Paulo, BRAZIL.
    Inoue, Roberto Santos
    Department of Electrical Engineering, Federal University of São Carlos, São Paulo, BRAZIL.
    Gonçalves Siqueira, Adriano Almeida
    Department of Mechatronics Engineering, University of São Paulo, BRAZIL.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Srinivasan, Divya
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos, São Paulo, BRAZIL.
    Adjustable sit-stand tables in office settings: development of a system for controlled posture changes2015Inngår i: Proceedings of the 19th Triennial Congress of the International Ergonomics Association, Melbourne 9-14 August 2015, 2015Konferansepaper (Fagfellevurdert)
  • 43.
    Barbieri, Dechristian Franca
    et al.
    Department of Physical Therapy, Federal University of São Carlos, Brazil.
    Srinivasan, Divya
    Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos, Brazil.
    Comparison of sedentary behaviors in office workers using sit-stand tables with and without semi-automated position changes2017Inngår i: Human Factors, ISSN 0018-7208, E-ISSN 1547-8181, Vol. 59, nr 5, s. 782-795Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objective: This study compared usage patterns of two different electronically controlled sit-stand tables during a 2-month intervention period among office workers.

    Background: Office workers spend most of their working time sitting, which is likely detrimental to health. Although the introduction of sit-stand tables has been suggested as an effective intervention to decrease sitting time, limited evidence is available on usage patterns of sit-stand tables, and whether patterns   are influenced by table configuration.

    Methods: Twelve workers were provided with standard sit-stand tables (non-automated table group) and 12 with semi-automated sit-stand tables programmed to change table position according to a pre-set pattern, if the user agreed to the system-generated prompt (semi-automated table group). Table position was monitored continuously for two months after introducing the tables, as a proxy for sit-stand behavior.

    Results: On average, the table was in a “sit” position for 85% of the work-day in both groups; this did not change significantly during the 2-month period. Switches in table position from sit to stand were, however, more frequent in the semi-automated table group than in the non-automated table group (0.65 vs. 0.29 hr-1; p=0.001).

    Conclusion: Introducing a semi-automated sit-stand table appeared to be an attractive alternative to a standard sit-stand table, since it led to more posture variation.

    Application: A semi-automated sit-stand table may effectively contribute to making postures more variable among office workers, and thus aid in alleviating negative health effects of extensive sitting.

  • 44.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of São Carlos.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Srinivasan, Divya
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    de Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos.
    The effect of non-computer tasks on job exposure variability in computer-intensive office work2013Inngår i: Eighth International Conference on Prevention of Work-related Musculoskeletal Disorders: Abstracts, 2013, s. 334-Konferansepaper (Fagfellevurdert)
  • 45.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of São Carlos, São Carlos, Brazil.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Srinivasan, Divya
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    dos Santos, Wilian Miranda
    Department of Mechanical Engineering, University of São Paulo, São Carlos, Brazil.
    Inoue, Roberto Santos
    Department of Electrical Engineering, Federal University of São Carlos, São Carlos, Brazil.
    Siqueira, Adriano
    Department of Mechanical Engineering, University of São Paulo, São Carlos, Brazil.
    Nogueira, Helen
    Department of Physical Therapy, Federal University of São Carlos, São Carlos, Brazil.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos, São Carlos, Brazil.
    Sit-stand tables with semi-automated position changes: a new interactive approach for reducing sitting in office work2017Inngår i: IISE Transactions on Occupational Ergonomics and Human Factors, ISSN 2472-5838, Vol. 5, nr 1, s. 39-46Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Introduction of sit-stand tables has been proposed as an initiative to decrease sedentary behavior among office workers and thus reduce risks of negative cardiometabolic health effects. However, ensuring proper and sustainable use of such tables has remained a challenge for successful implementation. Objective: We developed a new system to promote and sustain the use of sit-stand tables. Methods: The system was programmed to change the position of the table between “sit” and “stand” positions according to a regular pre-set pattern, if the user agreed to the system-generated prompts prior to each change. The user could respond to the system-generated prompts by agreeing, refusing or delaying the changes by 2 minutes. We obtained user compliance data when this system was programmed to a schedule of 10 minutes of standing after every 50 minutes of sitting. Compliance was investigated in nine office workers who were offered the semi-automated sit-stand table for two months. Results: On average, the system issued 12-14 alerts per day throughout the period. Average acceptance rate ranged from 75.0-82.4%, and refusal rate ranged from 11.8-10.1% between the first and eighth weeks of intervention (difference not statistically significant). During the first week after introduction, the table was in a standing position for 75.2 min on average, increasing slightly to 77.5 min in the eighth week. Conclusion: Since the workers were essentially sitting down before the table was introduced, these results suggest that the system was accepted well, and led to an effective reduction of sitting during working hours. Users also reported that the system contributed positively to their health and wellbeing, without interrupt their regular work, and that they would like to continue using the sit-stand table even beyond the two-month period, as part of their regular work. Compliance beyond two months of use, however, needs to be verified.

  • 46.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of São Carlos.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Srinivasan, Divya
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    dos Santos, Willian Miranda
    Department of Mechanical Engineering, University of São Paulo.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos.
    Use of sit-stand stations during the first 2 months after their introduction2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Background. There is increasing evidence that sedentary behaviour during the workday is associated with negative health effects. In this context, interventions to reduce total sedentary time and breaking up periods of continuous sitting during computerized office work are urgently needed. Several reviews conclude that introducing sit-stand stations may lead to positive effects, but they also state that long-term interventions in real occu-pational settings are still rare. Therefore, the aim of this study was to investigate usage of sit-stand tables among Brazilian office workers during an intervention lasting two months.

    Methods.Nine office workers (6 females, 3 males; age 42 [SD 12] years) participated. The workers received traditional sit-stand tables and ergonomics information. They then used the workstation for two months. The tables were furnished with a system that recorded and kept track of table use during the intervention period. Table use early and late in the intervention period was compared using the Wilcoxon signed-rank test for repeated measurements.

    Results. In the beginning of the eight-week intervention period, workers, in median, changed table position 2.4 (1.9 – 4.7) times per day, decreasing to 2.3 (1.0 – 3.3) times at the end (P=0.09). Moreover, we also found a non-significant decrease in total time stand-ing per day, from 88.6 (67.4 – 94.3) minutes to 58.8 (33.1 – 95.7) minutes (P=0.31).

    Discussion. Two months after introducing sit-stand tables, some decrease in usage could be seen, if not statistically significant. Based on this, we emphasize that introduction of sit-stand tables should be accompanied by continued encouragement of the workers, preferably informed by a personalized follow up of actual use.

  • 47.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of São Carlos, São Paulo, Brazil.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Srinivasan, Divya
    Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, USA.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos, São Paulo, Brazil.
    For sit-stand desks, semiautomated prompting may lead the way2017Inngår i: Industrial and Systems Engineering at Work, ISSN 2168-9210, Vol. 49, nr 5, s. 51-52Artikkel i tidsskrift (Annet vitenskapelig)
  • 48.
    Barbieri, Dechristian
    et al.
    Universidade Federal de São Carlos.
    Srinivasan, Divya
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Nogueira, Helen
    Universidade Federal de São Carlos.
    Oliveira, Ana Beatriz
    Universidade Federal de São Carlos.
    The ability of non-computer tasks to increase biomechanical exposure variability in computer-intensive office work2015Inngår i: Ergonomics, ISSN 0014-0139, E-ISSN 1366-5847, Vol. 58, nr 1, s. 50-64Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Postures and muscle activity in the upper body were recorded from 50 academics office workers during 2 hours of normal work, categorised by observation into computer work (CW) and three non-computer (NC) tasks (NC seated work, NC standing/walking work and breaks). NC tasks differed significantly in exposures from CW, with standing/walking NC tasks representing the largest contrasts for most of the exposure variables. For the majority of workers, exposure variability was larger in their present job than in CW alone, as measured by the job variability ratio (JVR), i.e. the ratio between min–min variabilities in the job and in CW. Calculations of JVRs for simulated jobs containing different proportions of CW showed that variability could, indeed, be increased by redistributing available tasks, but that substantial increases could only be achieved by introducing more vigorous tasks in the job, in casu illustrated by cleaning.

  • 49.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of Sao Carlos.
    Srinivasan, Divya
    Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbetshälsovetenskap och psykologi, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of Sao Carlos.
    Neck, trunk, and upper arm posture variation during computer work at a sit-stand table in a real work setting2019Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Background: Computer work is generally associated with constrained postures and sedentary behaviors. Sit-stand tables have been suggested as an effective intervention to promote changes in gross body posture, and thus reduce sitting. However, few studies have addressed to what extent sit-stand table usage affects posture variation in other body regions. The aim of this study was to examine neck, trunk and arm postures among office workers with access to sit-stand tables.

    Methods: Twenty-four office workers (16 females, 8 males; mean age 41 (SD9) years) participated. At entry, workers received sit-stand tables, which were then used for two months. Neck and trunk flexion, and right upper arm elevation (RUA) was recorded on three consecutive days, two hours/day, during the last week of table use. Minute-to-minute variability for the three postures during sitting (CWsit) and standing (CWstand) computer work was obtained for each participant. Job variance ratios (JVR) were calculated for the actual work, and for other combinations of CWsit and CWstand by simulation1.

    Results: CWsit and CWstand were performed for 72% and 28% of the time spent at the computer. Minute-to-minute variability was larger in CWsit than in CWstand for all three postures, and the difference CWsit-CWstand was largest for RUA [median 1.7 (IQR −0.2–1.7)º], followed by trunk [1.6 (0.9–3.0)º] and neck [0.9 (0.0–3.1)º]. During actual work, JVR was between 1 and 3 for most participants. Simulations suggested that maximum variability would occur at a combination of 40–80% CWsit and 20–60% CWstand.

    Conclusion: Neck, trunk and arm posture variation during computer work can be increased by manipulating proportions of time spent sitting and standing at a sit-stand table. The tentative “optimal” proportions reported here could be a benchmark for occupational health professionals.

  • 50.
    Barbieri, Dechristian
    et al.
    Department of Physical Therapy, Federal University of São Carlos, São Carlos, Brasil.
    Srinivasan, Divya
    Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA.
    Mathiassen, Svend Erik
    Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
    Oliveira, Ana Beatriz
    Department of Physical Therapy, Federal University of São Carlos, São Carlos, Brasil.
    The effect of sit-stand workstations to decrease sedentariness in office work: tests of 2 systems with and without automatic reminders2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Sedentary behaviors in office workers has become a major public health concern and several initiatives have been proposed to break up sedentary behavior patterns during the performance of computer-intensive office work. Among such initiatives, the use of sit-stand workstations has been suggested to be one of the most promising by recent reviews. However, there still is only limited scientific evidence showing how effective sit-stand workstations are, in reducing sedentary behaviors and also documentation of their sustainability of use in studies of regular office work (i.e. as the “newness” of the system wears off, with time since introduction). This study aimed to document user behaviors and compare the use of two sit-stand workstation based interventions among two groups of administrative office workers: an “autonomous” group in which these workstations were introduced following some general ergonomic guidelines, and another “feedback-system” group in which the sit-stand tables were furnished with a semi-automatic reminder system, programmed to raise the table to a high (i.e. standing) position for 10 minutes after every accumulated 50 minutes of the table being in a low (i.e. sitting) position, i.e. to result in about 83% sitting per day. In addition, the sustainability of the use of these two kinds of sit-stand workstation interventions over two continuous months since their introduction was also studied. The results averaged over two months of usage of the two interventions showed that the percentage (%) sitting time was 87.4 (84.9-89.2) on average in the autonomous group and 84.0 (83.5-85.4) on average in the feedback-system group (P=0.001), and the frequency of switches between sitting and standing was 0.3 (0.2-0.3) per hour in the autonomous group and 0.7 (0.6-0.7) per hour in the feedback-system group (P=0.001). Thus, the sit-stand table system integrated with the automatic reminder system led to more reduction in sitting time and more switches in posture between sitting and standing as compared to the traditional sit-stand table, and behaviors of both groups were seen to be sustained over the 2-month intervention period (no difference across time for any of the variables tested for any group).

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