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Passive and mentally-active sedentary behaviors and incident major depressive disorder: A 13-year cohort study
Epidemiology of Psychiatric Conditions, Substance use and Social Environment (EPiCSS), Department of Public Health Sciences, Karolinska Institutet, Sweden.
Behavioral Epidemiology Laboratory, Baker Heart and Diabetes Institute, Melbourne, Australia.
Physiotherapy Department, South London and Maudsley NHS Foundation Trust, London, United Kingdom.
Jönköping University, Jönköping International Business School, JIBS, Statistics. Department of Public Health Sciences, Karolinska Institutet, Solna, Sweden.ORCID iD: 0000-0003-2733-4441
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2018 (English)In: Journal of Affective Disorders, ISSN 0165-0327, E-ISSN 1573-2517, Vol. 241, p. 579-585Article in journal (Refereed) Published
Abstract [en]

Background: Regular physical activity reduces the risk of depression onset and is an effective treatment for mood disorders. Recent studies have reported that sedentary behavior (SB) increases the risk of depression in adults, but relationships of different types of SBs with depression have not been examined systematically. We explored longitudinal relationships of passive (e.g. watching TV) and mentally-active (e.g. office-work) SBs with incident major depressive disorder (MDD).

Methods: Self-report questionnaires were completed by 40,569 Swedish adults in 1997; responses were linked to clinician-diagnosed MDD obtained from medical registers until 2010. Relationships between passive, mentally-active and total SBs with incident MDD were explored using survival analysis with Cox proportional hazards regression. Models controlled for leisure time moderate-vigorous physical activity and occupational physical activity. Moderating effects of gender were examined.

Results: In fully-adjusted models, including only non-depressed adults at baseline, those reporting ≥ 3 h of mentally-active SBs on a typical day (versus < 3 h) had significant lower hazards of incident MDD at follow-up (HR = 0.74, 95% CI = 0.58–0.94, p = 0.018). There was a non-significant positive relationship of passive SBs with incident MDD (HR = 1.20, 95% CI = 0.96–1.52, p = 0.106). The association between total SBs (passive and mentally-active combined) was not significant (HR = 0.91, 95% CI = 0.75–1.10, p = 0.36). Gender did not moderate these associations.

Limitations: Physical activity and SBs were self-reported.

Conclusion: Mentally-active SBs may have beneficial effects on adults’ mental well-being. These effects are largely independent of habitual physical activity levels. 

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 241, p. 579-585
Keywords [en]
Depression, Mentally-active, Passive, Physical activity, Sedentary behavior, Sitting, adult, Article, cohort analysis, female, follow up, human, incidence, major clinical study, major depression, male, middle aged, office worker, priority journal, questionnaire, risk assessment, sedentary lifestyle, self report, television viewing
National Category
Psychiatry
Identifiers
URN: urn:nbn:se:hj:diva-42602DOI: 10.1016/j.jad.2018.08.020ISI: 000443816800076PubMedID: 30170310Scopus ID: 2-s2.0-85052326517Local ID: IHHÖvrigtISOAI: oai:DiVA.org:hj-42602DiVA, id: diva2:1278042
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare, DELG-2016/0028Available from: 2019-01-11 Created: 2019-01-11 Last updated: 2019-01-11Bibliographically approved

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