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Sleep-wake disturbances in sedentary community-dwelling elderly adults with functional limitations.


ABSTRACT: To evaluate sleep-wake disturbances in sedentary community-dwelling elderly adults with functional limitations.Cross-sectional.Lifestyle Interventions and Independence in Elder (LIFE) Study.Community-dwelling persons (mean age 78.9) who spent fewer than 20 min/wk in the previous month engaged in regular physical activity and fewer than 125 min/wk of moderate physical activity, and had a Short Physical Performance Battery (SPPB) score of <10 (N = 1,635).Mobility was evaluated according to 400-m walk time (slow gait speed defined as <0.8 m/s) and SPPB score (? 7 defined moderate to severe mobility impairment). Physical inactivity was defined according to sedentary time, as a percentage of accelerometry wear time with activity of <100 counts/min; participants in the top quartile of sedentary time were classified as having a high sedentary time. Sleep-wake disturbances were evaluated using the Insomnia Severity Index (ISI) (range 0-28; ? 8 defined insomnia), Epworth Sleepiness Scale (ESS) (range 0-24; ? 10 defined daytime drowsiness), Pittsburgh Sleep Quality Index (PSQI) (range 0-21; >5 defined poor sleep quality), and Berlin Questionnaire (high risk of sleep apnea).Prevalence rates were 43.5% for slow gait speed and 44.7% for moderate to severe mobility impairment, with 77.0% of accelerometry wear time spent as sedentary time. Prevalence rates were 33.0% for insomnia, 18.1% for daytime drowsiness, 47.8% for poor sleep quality, and 32.9% for high risk of sleep apnea. Participants with insomnia had a mean ISI score of 12.1, those with daytime drowsiness had a mean ESS score of 12.5, and those with poor sleep quality had a mean PSQI score of 9.2. In adjusted models, measures of mobility and physical inactivity were generally not associated with sleep-wake disturbances, using continuous or categorical variables.In a large sample of sedentary community-dwelling elderly adults with functional limitations, sleep-wake disturbances were prevalent but only mildly severe and were generally not associated with mobility impairment or physical inactivity.

SUBMITTER: Vaz Fragoso CA 

PROVIDER: S-EPMC4057978 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature

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Sleep-wake disturbances in sedentary community-dwelling elderly adults with functional limitations.

Vaz Fragoso Carlos A CA   Miller Michael E ME   Fielding Roger A RA   King Abby C AC   Kritchevsky Stephen B SB   McDermott Mary M MM   Myers Valerie V   Newman Anne B AB   Pahor Marco M   Gill Thomas M TM  

Journal of the American Geriatrics Society 20140602 6


<h4>Objectives</h4>To evaluate sleep-wake disturbances in sedentary community-dwelling elderly adults with functional limitations.<h4>Design</h4>Cross-sectional.<h4>Setting</h4>Lifestyle Interventions and Independence in Elder (LIFE) Study.<h4>Participants</h4>Community-dwelling persons (mean age 78.9) who spent fewer than 20 min/wk in the previous month engaged in regular physical activity and fewer than 125 min/wk of moderate physical activity, and had a Short Physical Performance Battery (SPP  ...[more]

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