Abstract:
BACKGROUND:The harmful relationship of sedentary behavior to health may reflect an exchange of sedentary activity for moderate-to-vigorous physical activity (MVPA), or sedentary behavior may be a separate risk factor. We examined whether time spent in sedentary behavior is related to disability in activities of daily living (ADL), independent of time spent in MVPA in older adults. METHODS:The nationally representative 2003-2006 National Health and Nutrition Examinations Surveys (NHANES) included 2286 adults aged 60 years and older in whom physical activity was assessed by accelerometer. The association between ADL task disability and the daily percentage of sedentary time was evaluated by multiple logistic regression. RESULTS:These adults on average spent 9h/d being sedentary during waking hours and 4.5% reported ADL disability. The odds of ADL disability were 46% greater (odds ratio, 1.46; 95% confidence interval, 1.07-1.98) for each daily hour spent in sedentary behavior, adjusted for MVPA and socioeconomic and health factors. CONCLUSION:These US national data show a strong relationship between greater time spent in sedentary behavior and the presence of ADL disability, independent of time spent in moderate or vigorous activity. These findings support programs encouraging older adults to decrease sedentary behavior regardless of their engagement in moderate or vigorous activity.
journal_name
J Phys Act Healthjournal_title
Journal of physical activity & healthauthors
Dunlop DD,Song J,Arnston EK,Semanik PA,Lee J,Chang RW,Hootman JMdoi
10.1123/jpah.2013-0311subject
Has Abstractpub_date
2015-01-01 00:00:00pages
93-101issue
1eissn
1543-3080issn
1543-5474pii
2013-0311journal_volume
12pub_type
杂志文章abstract:BACKGROUND:There is controversy regarding whether moderately-intense sports can improve physical fitness, which declines throughout adolescence among girls. The objective was to estimate the association between moderate and vigorous sports participation and cardiorespiratory fitness in a racially diverse sample of adol...
journal_title:Journal of physical activity & health
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pub_type: 杂志文章
doi:10.1123/jpah.2014-0412
更新日期:2015-10-01 00:00:00
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更新日期:2016-09-01 00:00:00
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