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J Gerontol A Biol Sci Med Sci. 2016 Jan;71(1):78-83. doi: 10.1093/gerona/glv103. Epub 2015 Aug 13.

Independent Associations Between Sedentary Behaviors and Mental, Cognitive, Physical, and Functional Health Among Older Adults in Retirement Communities.

Author information

1
Group Health Research Institute, Group Health Cooperative, Seattle, Washington. rosenberg.d@ghc.org.
2
San Diego Joint Doctoral Program in Public Health (Epidemiology), San Diego State University and the University of California.
3
School of Population Health and Translation Research Into Practice Center, Mater Research Institute, The University of Queensland, Brisbane, Australia.
4
Department of Family & Preventive Medicine, University of California, San Diego, La Jolla.

Abstract

BACKGROUND:

We examined the relationships between objective and self-reported sedentary time and health indicators among older adults residing in retirement communities.

METHODS:

Our cross-sectional analysis used data from 307 participants who completed baseline measurements of a physical activity trial in 11 retirement communities in San Diego County. Sedentary time was objectively measured with devices (accelerometers) and using self-reports. Outcomes assessed included emotional and cognitive health, physical function, and physical health (eg, blood pressure). Linear mixed-effects models examined associations between sedentary behavior and outcomes adjusting for demographics and accelerometer physical activity.

RESULTS:

Higher device-measured sedentary time was associated with worse objective physical function (Short Physical Performance Battery, balance task scores, 400-m walk time, chair stand time, gait speed), self-reported physical function, and fear of falling but with less sleep disturbance (all ps < .05). TV viewing was positively related to 400-m walk time (p < .05). Self-reported sedentary behavior was related to better performance on one cognitive task (trails A; p < .05).

CONCLUSIONS:

Sedentary time was mostly related to poorer physical function independently of moderate-to-vigorous physical activity and may be a modifiable behavior target in interventions aiming to improve physical function in older adults. Few associations were observed with self-reported sedentary behavior measures.

KEYWORDS:

Cognition; Exercise; Falls and mobility problems; Oldest-old; Retirement; Sleep; Well-being

PMID:
26273024
PMCID:
PMC4861254
DOI:
10.1093/gerona/glv103
[Indexed for MEDLINE]
Free PMC Article

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