Association between Sleep Duration and Body Composition Measures in Korean Adults: The Korea National Health and Nutrition Examination Survey 2010

Abstract

BackgroundThe association between sleep duration and body composition measures in Korean adults remains unclear.MethodsThis cross-sectional study included 3,532 subjects aged ≥40 years (1,542 men and 1,990 women) who participated in the 2010 Korea National Health and Nutrition Examination Survey V-1. Self-reported sleep duration and anthropometric data were collected. Appendicular skeletal muscle mass (ASM) was quantified via dual-energy X-ray absorptiometry. Obesity was defined according to the body mass index and waist circumference. Sarcopenia was defined as the muscle mass percentage (ASM/weight) below the lowest quintile computed for the study population. Multivariate logistic regressions with or without adjustment for sociodemographic and lifestyle factors were used to evaluate the association of sleep duration with obesity and sarcopenia for participants who slept ≤5, 6–8, and ≥9 h/d. The results were expressed as odds ratios (ORs) with 95% confidence intervals (95% CIs).ResultsIn women, the association between sleep duration and sarcopenia was stronger for individuals who slept ≥9 h/d than for those who slept 6–8 h/d (unadjusted OR, 1.99; 95% CI, 1.19–3.34; adjusted OR, 1.77; 95% CI, 1.06– 2.96).ConclusionLonger sleep duration is associated with a significantly higher incidence of sarcopenia in Korean women aged ≥40 years.

Breastfeeding and Sarcopenia in Later Life

“…Similar to that reported by several previous sarcopenia studies using KNHNES data that were published in the Korean Journal of Family Medicine, [6][7][8][9][10][11] sarcopenia was found to result from multiple factors, and breastfeeding is also likely to affect sarcopenia along with other childbirth parameters.…”

Sarcopenia is associated with insomnia in Japanese older adults: a cross-sectional study of data from the Nagasaki Islands study

“…Only 22 participants (1.4%) had a sleep duration < 5 h, and 79 participants (5%) had a sleep duration < 6 h. The relationship between short sleep duration and sarcopenia was reported in three previous studies [ 2 , 3 , 5 ]. Two of the studies examined the relationship among adults aged 40 years or greater, and the participants were not restricted to older adults [ 2 , 3 ]. Therefore, more large-scale examination is required to determine the relationship between short sleep duration and sarcopenia among older adults.…”

“…In the present study, there were few participants with a short sleep duration. Only 22 participants (1.4%) had a sleep duration < 5 h, and 79 participants (5%) had a sleep duration < 6 h. The relationship between short sleep duration and sarcopenia was reported in three previous studies [2,3,5]. Two of the studies examined the relationship among adults aged 40 years or greater, and the participants were not restricted to older adults [2,3].…”

“…In the present study, although a sleep duration ≥9 h was associated with sarcopenia in univariable analysis, long sleep duration was not a significant factor in multivariable analysis. Long sleep duration is reported to be associated with sarcopenia [2][3][4][5][6]. In an epidemiological study without using polysomnography, sleep duration is not necessarily the actual sleep duration.…”

“…Sleep-related problems have been studied as factors related to sarcopenia. Some epidemiologic studies including older adults demonstrate that shorter and longer sleep time correlate with sarcopenia [2][3][4][5][6]. Additionally, decreased sleep quality among women, including prolonged sleep latency and day-time dysfunction, is associated with sarcopenia [7,8].…”