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Dose response association of objective physical activity with mental health in a representative national sample of adults: A cross-sectional study

TitleDose response association of objective physical activity with mental health in a representative national sample of adults: A cross-sectional study
Year of Publication2018
AuthorsBernard, P., Doré I., Romain A-J., Hains-Monfette G., Kingsbury C., and Sabiston C.
JournalPLoS ONE
Volume13
Pages1 - 16
Abstract

Although higher physical activity (PA) levels are associated with better mental health, previous findings about the shape of the dose-response relationship between PA and mental health are inconsistent. Furthermore, this association may differ according to sedentary levels. We investigated the cross-sectional dose-response associations between objectively measured PA and mental health in a representative national sample of adults. We also examined whether sedentary time modified the PA-mental health associations. Based on 2007-2013 Canadian Health Measures Survey data, PA and sedentary time were measured using accelerometry among 8150 participants, aged 20 to 79 years. Generalized additive models with a smooth function were fitted to examine associations between minutes per day of moderate and vigorous PA (MVPA), light PA (LPA), daily steps (combined or not with sedentary time) and self-rated mental health. A significant curvilinear relationship between average daily minutes of MVPA and mental health was observed, with increasing benefits up to 50 minutes/day. For LPA, a more complex shape (monotonic and curvilinear) was found. For daily steps, inverted U-shaped curve suggested increasing benefits until a plateau between 5 000 and 16 000 steps. The MVPA-LPA combination was significantly associated with mental health but with a complex pattern (p

URLhttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0204682
DOI10.1371/journal.pone.0204682
Document URLhttps://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0204682&type=printable