Dose-Response Walking Activity and Physical Function in Older Adults

The aim of this study was to examine the dose-response relationship between walking activity and physical function (PF) in community-dwelling older adults. Physical activity (PA, pedometry) and PF (self-report [SF-36] and 6-minute walk test [6MWT]) were assessed in 836 individuals. Accumulated PA wa...

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Published in:Journal of aging and physical activity 2015-04, Vol.23 (2), p.194-199
Main Authors: Dondzila, Christopher J, Gennuso, Keith P, Swartz, Ann M, Tarima, Sergey, Lenz, Elizabeth K, Stein, Stephanie S, Kohl, Randal J, Strath, Scott J
Format: Article
Language:English
Subjects:
Exercise
Older people
Physical ability
Physical activity
Self report
Walking
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container_end_page 199
container_issue 2
container_start_page 194
container_title Journal of aging and physical activity
container_volume 23
creator Dondzila, Christopher J
Gennuso, Keith P
Swartz, Ann M
Tarima, Sergey
Lenz, Elizabeth K
Stein, Stephanie S
Kohl, Randal J
Strath, Scott J
description The aim of this study was to examine the dose-response relationship between walking activity and physical function (PF) in community-dwelling older adults. Physical activity (PA, pedometry) and PF (self-report [SF-36] and 6-minute walk test [6MWT]) were assessed in 836 individuals. Accumulated PA was categorized into four groups (1 = ≤ 2,500; 2 = 2,501–5,000; 3 = 5,001–7,500; and 4 = ≥ 7,501 steps/day). Across individual groups 1–4 , SF-36 scores increased from 66.9 ± 25.0% to 73.5 ± 23.2% to 78.8 ± 19.7% to 81.3 ± 20.6%, and 6MWT increased from 941.7 ± 265.4 ft to 1,154.1 ± 248.2 ft to 1,260.1 ± 226.3 ft to 1,294.0 ± 257.9 ft. Both SF-36 and 6MWT scores were statistically different across all groups, apart from groups 3 and 4. PA and ranks of groups were highly significant predictors ( p < .0001) for both SF-36 and 6MWT. There was a positive dose-response relationship evident for both SF-36 and 6MWT with increasing levels of PA. Low levels of PA appear to be an important indicator of poor functionality in older adults.
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subjects Exercise
Older people
Physical ability
Physical activity
Self report
Walking
title Dose-Response Walking Activity and Physical Function in Older Adults
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