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J Am Geriatr Soc. 2008 Sep;56(9):1665-73. doi: 10.1111/j.1532-5415.2008.01846.x. Epub 2008 Aug 25.

Association between sleep and physical function in older men: the osteoporotic fractures in men sleep study.

Author information

1
Department of Medicine, University of California at San Diego, La Jolla, California, USA. tldam@ucsd.edu

Abstract

OBJECTIVES:

To determine whether sleep quality is associated with physical function in older men.

DESIGN:

Cross-sectional.

SETTING:

Six U.S. centers.

PARTICIPANTS:

Two thousand eight hundred sixty-two community-dwelling men.

MEASUREMENTS:

Total hours of nighttime sleep (TST), wake after sleep onset (WASO), sleep latency (SL), and sleep efficiency (SE) measured using actigraphy; sleep stage distribution, respiratory disturbance index (RDI), and hypoxia measured using polysomnography; measures of physical function: grip strength, walking speed, chair stand, and narrow walk.

RESULTS:

In age-adjusted models, <6 or >8 hours TST, SE less than 80%, WASO of 90 minutes or longer, RDI of 30 or greater, and hypoxia were associated with poorer physical function. (Mean grip strength was 2.9% lower and mean walking speed was 4.3% lower in men with WASO >or=90 minutes than men with WASO <90 minutes.) After adjusting for potential covariates, differences in grip strength and walking speed remained significantly associated with WASO of 90 minutes or longer, SE less than 80%, and hypoxia but not with TST or RDI of 30 or greater.

CONCLUSION:

Greater sleep fragmentation and hypoxia are associated with poorer physical function in older men.

PMID:
18759758
PMCID:
PMC2631084
DOI:
10.1111/j.1532-5415.2008.01846.x
[Indexed for MEDLINE]
Free PMC Article

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