Changes in Leisure-Time Physical Activity and Sedentary Time and Their Associations With Psychological Distress: An Occupational Cohort Study.

Background: Physical inactivity and sedentary behavior are associated with mental ill-health. We examined changes in leisure-time physical activity (LTPA) and sedentary time, and their associations with psychological distress in an occupational cohort.

Methods: We used phase 1 survey data, collected among the employees of the City of Helsinki, Finland, aged 19-39 years in 2017, and phase 2 follow-up survey from 2022 (n = 1914 participants, 75% women). A 4-category variable (High→High, Low→High, High→Low, and Low→Low) was constructed for both LTPA and sedentary time to reflect the change over time. The 21-item Depression, Anxiety and Stress Scale was used to measure psychological distress. Logistic regression analysis estimated odds ratios (ORs) and their 95% CIs, adjusting for sociodemographic factors, working conditions, health-related factors, and physician-diagnosed mental disorders at phase 1.

Results: Repeated low LTPA was associated with anxiety (OR = 2.03; 95% CI, 1.44-2.85), depressive (OR = 1.69; 95% CI, 1.22-2.36), and stress (OR = 2.22; 95% CI, 1.58-3.12) symptoms after adjusting for gender and age, compared with repeated high LTPA. The associations remained after full adjustments in anxiety (OR = 1.57; 95% CI, 1.08-2.30) and stress (OR = 1.92; 95% CI, 1.32-2.78) symptoms. Additionally, a change from high to low LTPA was associated with anxiety (OR = 1.47; 95% CI, 1.05-2.04) symptoms after full adjustments.

Conclusion: Repeated low levels of LTPA are associated with anxiety and stress symptoms. No consistent associations between sitting time and psychological distress could be confirmed. Considering the increasing levels of psychological distress in recent years, particularly among younger adults, it is essential to explore effective countermeasures through large interventions or prospective study designs.