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Sitting, standing and physical activity among male and female office workers of different age: behaviours examined using compositional data analysis
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational Health Science and Psychology, Occupational Health Science. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0003-1443-6211
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational Health Science and Psychology, Occupational Health Science. University of Gävle, Centre for Musculoskeletal Research.
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational Health Science and Psychology, Occupational Health Science. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0002-2741-1868
2019 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Background. Excessive sitting is an increasing concern in working life. Negative health effects may, to some extent, be mitigated by interrupting prolonged sitting by standing or more active behaviours, like walking. Alternations between these behaviours may also influence variation in neck-shoulder-arm exposures, and thus musculoskeletal disorder risks. This study examined time spent sitting, standing and active among office workers, and determined the extent to which these behaviours differed by gender and age.

Methods. Ninety-nine workers at a Swedish government agency (50/49 men/women; mean(SD) age 47.1(9.0) years) wore a thigh accelerometer (Actigraph GT3X) for five working days. Data were processed to give the percentage of time spent sitting in short (<30 min) and long (≥30 min) bouts, in standing, and in more active behaviours. In adding up to 100%, such data are constrained and inherently dependent. This requires further examination to be performed using Compositional Data Analysis (CoDA). Thus, Isometric Log-transformed Ratios were constructed, describing sitting vs. non-sitting (sit/nonsit), short-bout vs. long-bout sitting (shortsit/longsit), and standing vs. active (stand/active). These ratios were examined for pairwise correlations, and for associations with gender and age.

Results. On average, workers spent 28.9%, 42.2%, 21.6%, and 7.3% time in shortsit, longsit, standing, and active. Sit/nonsit correlated negatively with shortsit/longsit (r=–0.49) and stand/active (r=–0.64); shortsit/longsit correlated positively with stand/active (r=0.19). Gender showed small associations with all three ratios (partial-ƞ2=0.01-0.03; p=0.08-0.43). Stand/active increased with increasing age (partial-ƞ2=0.07; p=0.01), while sit/nonsit and shortsit/longsit were very weakly associated with age (partial-ƞ2=0.01 and 0.01; p=0.26 and 0.40).

Conclusions. Workers spending more time sitting also spent a larger part of that time in long, uninterrupted sitting bouts. However, when not sitting, these workers were more physically active than workers who sat less. These behaviours differed little by gender and age, besides older workers being relatively less active during non-sitting periods.

Place, publisher, year, edition, pages
2019.
National Category
Occupational Health and Environmental Health
Identifiers
URN: urn:nbn:se:hig:diva-30633OAI: oai:DiVA.org:hig-30633DiVA, id: diva2:1349402
Conference
10th International Scientific Conference on the Prevention of Work-related Musculoskeletal Disorders, 2-5 September 2019, Bologna, Italy
Available from: 2019-09-09 Created: 2019-09-09 Last updated: 2019-09-30Bibliographically approved

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Mathiassen, Svend ErikJohansson, ElinHallman, David

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CiteExportLink to record
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Citation style
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