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Associations of sedentary behavior and physical activity with older adults' physical function: an isotemporal substitution approach

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posted on 2024-07-11, 09:28 authored by Akitomo Yasunaga, Ai Shibata, Kaori Ishii, Mohammad Javad Koohsari, Shigeru Inoue, Takemi SugiyamaTakemi Sugiyama, Neville OwenNeville Owen, Koichiro Oka
Backgrounds: The purpose of this study was to examine, in a sample of Japanese older adults, the associations of objectively-assessed sedentary behavior (SB) and physical activity (PA) with performance-based physical function. The isotemporal substitution (IS) approach was used to model simultaneously the effects of the specific activity being performed and the activity being displaced, in an equal time-exchange manner. Methods: Among 287 older adults (65-84 years), we used accelerometers to identify the daily average time spent on SB (<= 1.5 METs); light-intensity PA (LIPA) (>1.5 to <3.0 METs); and moderate-to vigorous-intensity PA (MVPA) (>= 3.0 METs). Physical function was assessed using five performance-based measures: hand grip strength, usual and maximum gait speeds, timed up and go, and one-legged stance with eyes open. We employed three linear regression models a single-activity model, a partition model, and an IS model - to assess the associations of SB, LIPA, and MVPA with each of the five measures of physical function. Results: There were significant positive associations in the single-activity and partition models between MVPA and the measures of physical function (with the exception of hand grip strength). The IS models found that replacing SB or LIPA with MVPA was significantly and favorably associated with physical function measures. Conclusions: These findings indicate that replacing small amounts of SB and LIPA with MVPA (such as 10 min) may contribute to improvements in older adults' physical function.

Funding

Japan Society for the Promotion of Science

Ministry of Education, Culture, Sports, Science and Technology

Sedentary Behavior in Older Adults: Prospectvie Associations with Health Outocome and Determinants : Japan Society for the Promotion of Science | 15K01647

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ISSN

1471-2318

Journal title

BMC geriatrics

Volume

17

Issue

1

Article number

article no. 280

Pagination

280-

Publisher

BioMed Central Ltd.

Copyright statement

Copyright © 2017 The Author(s). Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

Language

eng

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