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Associations Between Job-Strain, Physical Activity, Health Status, and Sleep Quality Among Swedish Municipality
Naimi Leitaru1, Stef Kremers, Jan Hagberg
1Faculty of Health Medicine and Life Sciences (Ms Leitaru); Department of Health Promotion, School of Nutrition and Translational Research in Metabolism (Dr Kremers), Maastricht University, Netherlands; Institute of Environmental Medicine, Karolinska Institutet (Dr Hagberg, Dr Björklund, Dr Kwak), Sweden.
Objective:
To examine the associations between work-stress and physical activity (PA) with sleep quality while controlling for covariates, including social support.
Methods:
A cross-sectional study among employees of a municipality (n = 2765). Data from respondents (n = 1973) with good/poor sleep quality were included. Prevalence ratios (PR) were estimated using modified Poisson regression analyses.
Results:
A significant interaction was observed between job-strain and self-reported health in the explanation of sleep quality. Consequently, interaction (job strain × self-rated health) adjusted PRs were calculated. The PRs for high job strain were 1.986 (95% CI 1.58 to 2.49) and 1.220 (95% CI 1.04 to 1.44) compared with the reference groups.
Conclusions:
Findings show that high job strain and low PA levels are associated with poor sleep quality, and that self-rated health plays an important moderating role in the association between job strain and sleep quality.
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