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Daily shoulder pain among flight baggage handlers and its association with work tasks and upper arm postures on the same day
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0001-9612-3766
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0003-1443-6211
Unit of Intervention and Implementation Research for worker health, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Occupational and Environmental Medicine, Department of Medical Sciences, Uppsala University, Uppsala, Sweden.
2017 (English)In: Annals of Occupational Hygiene, ISSN 0003-4878, E-ISSN 1475-3162Article in journal (Refereed) Epub ahead of print
Abstract [en]

Objectives: This study of flight baggage handlers aimed at examining the extent to which shoulder pain developed during single work shifts, and whether a possible development was associated with biomechanical exposures and psychosocial factors during the same shift.

Methods: Data were collected during, in total, 82 work shifts in 44 workers. Right and left shoulder pain intensity was rated just before and just after the shift (VAS scale 0-100 mm). Objective data on time in extreme and time in neutral upper arm postures were obtained for the full shift using accelerometers, and the baggage handlers registered the number of aircrafts handled in a diary. During half of the shift, workers were recorded on video for subsequent task analysis of baggage handling. Influence at work and support from colleagues were measured by use of Copenhagen Psychosocial Questionnaire (COPSOQ). Associations between exposures and the increase in pain intensity during the shift (daily pain) were analysed for the right and left shoulder separately using Generalized Estimating Equations (GEE).

Results: Daily pain was observed in approximately one third of all shifts.  It was significantly associated with the number of aircrafts handled for both the right and left shoulder. In multivariate models including both biomechanical exposures and the psychosocial factors influence at work and support from colleagues, aircrafts handled was still significantly associated with daily pain in both shoulders, and so was influence and support, however in opposite directions.

Conclusions: Daily pain was, in general, associated with biomechanical exposures during the same shift and with general influence and support in the job. In an effort to reduce pain among flight baggage handlers, it may therefore be justified to consider a reduction of biomechanical exposures during handling of aircrafts, combined with due attention to psychosocial factors at work.

Place, publisher, year, edition, pages
2017.
Keyword [en]
biomechanical exposure, ergonomics, manual handling, musculoskeletal disorder
National Category
Environmental Health and Occupational Health
Identifiers
URN: urn:nbn:se:hig:diva-23214DOI: 10.1093/annweh/wxx073OAI: oai:DiVA.org:hig-23214DiVA: diva2:1061893
Funder
AFA Insurance, 100071Forte, Swedish Research Council for Health, Working Life and Welfare, 2009-1761
Available from: 2017-01-04 Created: 2017-01-04 Last updated: 2017-09-27Bibliographically approved
In thesis
1. Working conditions and musculoskeletal disorders in flight baggage handling
Open this publication in new window or tab >>Working conditions and musculoskeletal disorders in flight baggage handling
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Introduction: Baggage handling is considered to be a heavy manual handling job including biomechanical exposures suspected of increasing the risk for musculoskeletal disorders. Aims: To document low back pain (LBP), shoulder pain (SP), and physical and psychosocial factors in baggage handlers, and to evaluate the implementation of an ergonomic intervention aiming to increase the use of loading assist devices. Methods: A questionnaire was utilized to characterize pain and psychosocial work conditions in 525 baggage handlers. The postures of 55 baggage handlers during 114 shifts were measured using inclinometry, half shift video-recordings were made for subsequent task analysis, and the number of aircraft handled was registered. Associations for psychosocial and biomechanical exposures with pain were assessed using regression analyses. An ergonomic intervention was implemented and evaluated using questionnaires and repeated interviews. Feasibility, intermediate outcomes, barriers and facilitators were assessed. Results: The prevalence rates of reported LBP and SP were 70% and 60%, respectively. Pain interfering with work (LBP - 30% and SP - 18%) and high pain intensity (LBP - 34% and SP - 28%) were associated with poor psychosocial working conditions. Extreme postures with arms elevated >60° occurred for 6.4% of the total time, and in trunk flexion >60° for 2.1% total time. In contrast, 71% of the total time was spent in a neutral trunk posture. The 90th percentile trunk forward flexion was 34.1°.  Daily shoulder pain increased in approximately one-third of all shifts and was positively associated with extreme work posture and the number of aircraft handled; this association was modified by influence and support. The intervention was delivered as planned, and dose received and satisfaction were rated as high. Motivated trainees facilitated implementation while lack of manager support, opportunities to observe and practice behaviors, follow-up activities, staff reduction, and job insecurity were barriers. Conclusion: The high prevalence rates of LBP and SP in baggage handlers were associated with psychosocial exposures, and daily shoulder pain was associated with higher biomechanical exposure. Barriers to implementation can be minimized by recruiting motivated trainees, securing strong organizational support, and carrying out follow-up activities.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2017. 59 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 1321
Keyword
epidemiology, low back pain, shoulder pain, physical exposures, psychosocial exposures, inclinometry, implementation, process evaluation
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:hig:diva-25324 (URN)
Public defence
2017-05-17, Frödingesalen, Ulleråkersvägen, Uppsala, 09:30 (English)
Opponent
Supervisors
Available from: 2017-09-27 Created: 2017-09-26 Last updated: 2017-09-27Bibliographically approved

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