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Replacing sedentary time with physical activity: effects on health-related quality of life in older Japanese adults |
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| Authors: | Akitomo Yasunaga Ai Shibata Kaori Ishii Shigeru Inoue Takemi Sugiyama Neville Owen Koichiro Oka |
| Affiliation: | 1.Faculty of Liberal Arts and Sciences,Bunka Gakuen University,Shibuya-ku,Japan;2.Faculty Health and Sport Sciences,University of Tsukuba,Tsukuba,Japan;3.Faculty of Sport Sciences,Waseda University,Tokorozawa,Japan;4.Department of Preventive Medicine and Public Health,Tokyo Medical University,Shinjuku-ku,Japan;5.Mary MacKillop Institute for Health Research,Australian Catholic University,Melbourne,Australia;6.Centre for Urban Transitions,Swinburne University of Technology,Hawthorn,Australia;7.Behavioural Epidemiology Laboratory,Baker Heart and Diabetes Institute,Melbourne,Australia |
| Abstract: | BackgroundThe isotemporal substitution (IS) approach can be used to assess the effect of replacing one activity with the equal duration of another activity on relevant outcomes. This study examined the associations of objectively assessed sedentary behavior (SB) and physical activity (PA) with health-related quality of life (HRQOL) in older Japanese adults, using the IS approach.MethodsParticipants were 287 older Japanese adults (aged 65–84?years) who wore accelerometers for at least 7 days. We calculated the average daily time spent in SB (≤1.5 METs); light-intensity PA (LPA: >?1.5 toResultsThe IS models showed replacing SB or LPA with MVPA to be significantly associated with better physical component summary scores. Replacing SB with MVPA was marginally associated with better mental component summary scores.ConclusionThese findings indicate that replacing SB with the same amount of MVPA may contribute to better physical HRQOL in older adults. |
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