title: Age differences in the effect of physical activity on depressive symptoms.
abstract: This study examined associations between physical activity and depressive symptoms in 1,151 community-dwelling adults in Japan. Physical activity was measured using a pedometer, whereas depressive symptoms were assessed with the Center for Epidemiological Studies-Depression Scale. A structural equation modeling with a cross-lagged panel design revealed that for the older adults (65-79 years of age), daily walking at baseline predicted fewer depressive symptoms at the 2-year follow-up, even after adjusting for confounders. In contrast, the association was not confirmed for the middle-aged adults (40-64 years of age). Findings suggest that age should be considered when estimating the effect of physical activity on psychological well-being.
authors.affiliation: Department of Epidemiology, National Institute for Longevity Sciences, Obu Aichi, Japan. fukukawa@nils.go.jp
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Fukukawa
authors.forename: Chiori
authors.initials: C
authors.lastname: Nakashima
authors.forename: Satomi
authors.initials: S
authors.lastname: Tsuboi
authors.forename: Rumi
authors.initials: R
authors.lastname: Kozakai
authors.forename: Wataru
authors.initials: W
authors.lastname: Doyo
authors.forename: Naoakira
authors.initials: N
authors.lastname: Niino
authors.forename: Fujiko
authors.initials: F
authors.lastname: Ando
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Shimokata
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D003863:Depression / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D011795:Surveys and Questionnaires