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Int J Obes (Lond). 2008 Dec;32(12):1825-34. doi: 10.1038/ijo.2008.198. Epub 2008 Oct 21.

The association between sleep duration and obesity in older adults.

Author information

1
Division of Pulmonary, Critical Care, and Sleep Medicine and Center for Clinical Investigation, University Hospitals Case Medical Center and Case Western Reserve University, Cleveland, OH 44106, USA. srp20@case.edu

Abstract

BACKGROUND:

Reduced sleep has been reported to predict obesity in children and young adults. However, studies based on self-report have been unable to identify an association in older populations. In this study, the cross-sectional associations between sleep duration measured objectively and measures of weight and body composition were assessed in two cohorts of older adults.

METHODS:

Wrist actigraphy was performed for a mean (s.d.) of 5.2 (0.9) nights in 3055 men (age: 67-96 years) participating in the Osteoporotic Fractures in Men Study (MrOS) and 4.1 (0.8) nights in 3052 women (age: 70-99 years) participating in the Study of Osteoporotic Fractures (SOF). A subgroup of 2862 men and 455 women also underwent polysomnography to measure sleep apnea severity.

RESULTS:

Compared to those sleeping an average of 7-8 h per night, and after adjusting for multiple risk factors and medical conditions, a sleep duration of less than 5 h was associated with a body mass index (BMI) that was on average 2.5 kg/m(2) (95% confidence interval (CI): 2.0-2.9) greater in men and 1.8 kg/m(2) (95% CI: 1.1-2.4) greater in women. The odds of obesity (BMI >or= 30 kg/m(2)) was 3.7-fold greater (95% CI: 2.7-5.0) in men and 2.3-fold greater in women (95% CI: 1.6-3.1) who slept less than 5 h. Short sleep was also associated with central body fat distribution and increased percent body fat. These associations persisted after adjusting for sleep apnea, insomnia and daytime sleepiness.

CONCLUSIONS:

In older men and women, actigraphy-ascertained reduced sleep durations are strongly associated with greater adiposity.

PMID:
18936766
PMCID:
PMC2605208
DOI:
10.1038/ijo.2008.198
[Indexed for MEDLINE]
Free PMC Article

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