Movement behaviours and sleep locked within the 24-hour day: Compositional associations with mental health
Oral Presentation B14.1
DOI:
https://doi.org/10.14288/hfjc.v14i3.582Keywords:
Physical Activity, Sedentary Behaviour, Sleep, Accelerometry, Mental HealthAbstract
Background: Physical activity, sedentary behaviour and sleep are suggested risk factors for poor mental health, also in middle-aged and elderly. Durations of these behaviors are bound within the 24h-day, yet this relative nature of the data has often not been taken into account. Purpose: To investigate the associations of reallocations of time among physical activity, sedentary behaviour and sleep with depressive and anxiety symptoms. Methods: Between 2011 and 2016, accelerometer data (mean duration 5.8±0.4 days) were collected to estimate physical activity, sedentary behaviour and sleep, and validated questionnaires were used to assess depressive (Center for Epidemiologic Studies-Depression) and anxiety (Hospital Anxiety Depression Scale) symptoms among 1,943 participants (mean age 71±9 years, 52% women) from the population-based Rotterdam Study. Compositional isotemporal substitution analyses were performed. Results: In confounder adjusted models, a reallocation of 30 minutes more moderate-to-vigorous physical activity was associated with a -0.55 (95%-confidence interval (CI): -1.04;-0.06) points lower depressive symptoms score when replacing sleep, a -0.59 (95%CI: -1.06;-0.12) points lower score when replacing sedentary behaviour and a -0.70 (95%CI: -1.63;0.24) points lower score when replacing light physical activity. No associations were found for anxiety. Conclusions: More moderate-to-vigorous physical activity is associated with less depressive symptoms when it replaces either sleep, sedentary behaviour or light physical activity. Although the design of our study is cross-sectional, we speculate that mainly intensive types of physical activity are important in this age group in relation to depressive symptoms.
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Copyright (c) 2021 Amy Hofman, Trudy Voortman, Arfan Ikram, Annemarie I. Luik
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