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Does increasing physical activity reduce the excess risk of work disability among overweight individuals?
Finnish Inst Occupat Hlth, Helsinki, Finland / Univ Helsinki, Clinicum, Helsinki, Finland.ORCID iD: 0000-0001-9113-2428
Finnish Inst Occupat Hlth, Helsinki, Finland.
Univ Helsinki, Clinicum, Helsinki, Finland.
Univ Turku, Dept Publ Hlth, Finland / Turku Univ Hosp, Finland.
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2019 (English)In: Scandinavian Journal of Work, Environment and Health, ISSN 0355-3140, E-ISSN 1795-990X, Vol. 45, no 4, p. 376-385Article in journal (Refereed) Published
Abstract [en]

Objectives We examined the extent to which an increase in physical activity would reduce the excess risk of work disability among overweight and obese people (body mass index >= 25kg/m(2)).

Methods We used counterfactual modelling approaches to analyze longitudinal data from two Finnish prospective cohort studies (total N=38 744). Weight, height and physical activity were obtained from surveys and assessed twice and linked to electronic records of two indicators of long-term work disability (>= 90-day sickness absence and disability pension) for a 7-year follow-up after the latter survey. The models were adjusted for age, sex, socioeconomic status, smoking, and alcohol consumption.

Results The confounder-adjusted hazard ratio (HR) of long-term sickness absence for overweight compared to normal-weight participants was 1.43 [95% confidence interval (CI) 1.35-1.53]. An increase in physical activity among overweight compared to normal-weight individuals was estimated to reduce this HR to 1.40 (95% CI 1.31-1.48). In pseudo-trial analysis including only the persistently overweight, initially physically inactive participants, the HR for long-term sickness absence was 0.82 (95% CI 0.70-0.94) for individuals with increased physical activity compared to those who remained physically inactive. The results for disability pension as an outcome were similar.

Conclusions These findings suggest that the excess risk of work disability among overweight individuals would drop by 3-4% if they increased their average physical activity to the average level of normal-weight people. However, overweight individuals who are physically inactive would reduce their risk of work disability by about 20% by becoming physically active.

Place, publisher, year, edition, pages
2019. Vol. 45, no 4, p. 376-385
Keywords [en]
counterfactual analysis, mediation, normal weight; obesity, sickness absence, weight
National Category
Public Health, Global Health, Social Medicine and Epidemiology
Research subject
Individual and Society VIDSOC
Identifiers
URN: urn:nbn:se:his:diva-17464DOI: 10.5271/sjweh.3799ISI: 000473173000007PubMedID: 30640978OAI: oai:DiVA.org:his-17464DiVA, id: diva2:1338343
Available from: 2019-07-22 Created: 2019-07-22 Last updated: 2019-07-22

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Suominen, Sakari

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