Prospective relationship between objectively measured light physical activity and depressive symptoms in later life

Ku, Po‐Wen; Steptoe, Andrew; Liao, Yung; Sun, Wen‐Jung; Chen, Li‐Jung

doi:10.1002/gps.4672

Publication:
Prospective relationship between objectively measured light physical activity and depressive symptoms in later life

cris.lastimport.scopus	2026-02-26T16:02:03Z
dc.creator	Ku, Po‐Wen
dc.creator	Steptoe, Andrew
dc.creator	Liao, Yung
dc.creator	Sun, Wen‐Jung
dc.creator	Chen, Li‐Jung
dc.date	2017-02-09
dc.date.accessioned	2018-06-04T15:36:52Z
dc.date.accessioned	2025-07-28T15:05:43Z
dc.date.available	2018-06-04T15:36:52Z
dc.date.issued	2018-06-04T15:36:52Z
dc.description.abstract	Background The use of self‐report measures of physical activity is a serious methodological weakness in many studies of physical activity and depressive symptoms. It is still equivocal whether light physical activity protects older adults from depressive symptoms. Objective This study aimed to explore whether objectively measured light physical activity, independent of sedentary and moderate‐to‐vigorous activity, is associated with a reduced risk of subsequent depressive symptoms in older adults. Methods This was a 2‐year prospective cohort study. A total of 285 community‐dwelling older adults aged 65 years or older were interviewed in 2012. A second wave of assessment was carried out in 2014 involving 274 (96.1%) participants. Time spent in physical activity at different intensities was assessed using triaxial accelerometers. Depressive symptoms were measured using the 15‐item Geriatric Depression Scale. Negative binomial regression models with adjustment for baseline depressive symptoms, accelerometer wear time, socio‐demographic variables, lifestyle behaviors, and chronic disease conditions were conducted. Results Time spent in moderate‐to‐vigorous and light physical activities were both inversely related to depressive symptoms at follow‐up. Sedentary time was associated with an increased risk of subsequent depressive symptoms. When sedentary or moderate‐to‐vigorous activity were included in the multivariable‐adjusted regression models with light physical activity simultaneously, only light physical activity remained significant. Sensitivity analyses for assessing confounding and reverse causation provided further support for the stability of these findings. Conclusion Light physical activity, independent of sedentary and moderate‐to‐vigorous activity, is associated with a reduced risk of subsequent depressive symptoms in later life.
dc.format.extent	144049 bytes
dc.format.mimetype	application/pdf
dc.identifier.doi	10.1002/gps.4672
dc.identifier.uri	https://ir.ntus.edu.tw/handle/987654321/65703
dc.language	zh_TW
dc.publisher	John Wiley & Sons, Ltd
dc.relation	Int J Geriatr Psychiatry, Vol.33, No.1, pp. 58–65
dc.subject	exercise; depression; longitudinal; accelerometer; objective measure
dc.title	Prospective relationship between objectively measured light physical activity and depressive symptoms in later life
dc.type	article
dspace.entity.type	Publication