Physical Activity, Sleep, and Symptoms of Depression in Adults - Testing for Mediation

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http://hdl.handle.net/10138/312868

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Kaseva , K , Dobewall , H , Yang , X , Pulkki-Råback , L , Lipsanen , J , Hintsa , T , Hintsanen , M , Puttonen , S , Hirvensalo , M , Elovainio , M , Raitakari , O & Tammelin , T 2019 , ' Physical Activity, Sleep, and Symptoms of Depression in Adults - Testing for Mediation ' , Medicine and Science in Sports and Exercise , vol. 51 , no. 6 , pp. 1162-1168 . https://doi.org/10.1249/MSS.0000000000001896

Title: Physical Activity, Sleep, and Symptoms of Depression in Adults - Testing for Mediation
Author: Kaseva, Kaisa; Dobewall, Henrik; Yang, Xiaolin; Pulkki-Råback, Laura; Lipsanen, Jari; Hintsa, Taina; Hintsanen, Mirka; Puttonen, Sampsa; Hirvensalo, Mirja; Elovainio, Marko; Raitakari, Olli; Tammelin, Tuija
Contributor: University of Helsinki, Department of Psychology and Logopedics
University of Helsinki, Department of Psychology and Logopedics
University of Helsinki, Department of Psychology and Logopedics
University of Helsinki, Department of Psychology and Logopedics
University of Helsinki, University Management
University of Helsinki, University Management
University of Helsinki, University Management
University of Helsinki, Department of Psychology and Logopedics
Date: 2019-06
Language: eng
Number of pages: 7
Belongs to series: Medicine and Science in Sports and Exercise
ISSN: 0195-9131
URI: http://hdl.handle.net/10138/312868
Abstract: Purpose: Physical activity, sleep problems, and symptoms of depression contribute to overall well-being. The factors are reciprocally associated, but the nature of these associations remains unclear. The present study examined whether sleep problems mediated the association between physical activity and depressive symptoms. Methods: The eligible population (n = 3596) consisted of adults from the ongoing, population-based Cardiovascular Risk in Young Finns Study started in 1980. Participants' leisure-time physical activity was assessed with physical activity index (2007) and sleep problems with Jenkins' Sleep Questionnaire in 2007 and 2011. Depressive symptoms were measured using modified Beck Depression Inventory in 2007 and 2012, from which the items reflecting sleep problems were excluded. Mediation analyses, through which the associations between the variables were examined, were adjusted for sex and a set of health-related covariates assessed in 2007 and 2011. Results: Physical activity was associated with decreased levels of sleep problems and depressive symptoms (P <0.05). The association between physical activity and depressive symptoms (b = -0.10, P <0.01) was partly mediated by sleep problems (proportion mediated = 0.36, P <0.01). The adjustment for depressive symptoms at baseline attenuated the mediation effect (proportion mediated = 0.30, P > 0.05). Conclusions: Physical activity's favorable contribution to depressive symptoms was mediated partly by sleep, but the mediation effect disappeared after adjusting for the previous depressive symptoms in adulthood.
Subject: 515 Psychology
DEPRESSION
SLEEP PROBLEMS
LEISURE-TIME PHYSICAL ACTIVITY
CAUSALITY
CARDIOVASCULAR RISK
PREDICTORS
CHILDHOOD
EXERCISE
INSOMNIA
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