Abnormal sleep duration is associated with sarcopenia in older Chinese people: A large retrospective cross-sectional study

Abstract

Aim Abnormalities in sleep patterns are a common health problem for the older adults. The relationship between sarcopenia and sleep duration in older people is controversial. This research is to examine the association between sleep duration and sarcopenia. Methods We drew 21,095 adults from the China Health and Retirement Longitudinal Survey (CHARLS). Not only we explore the relationship between sleep duration and sarcopenia, but also compare sleep duration to three sarcopenia subcomponents. Moreover, the sensitivity analysis was conducted by the gender and residence area to ascertain the discrepancy, separately. Finally, using restricted cubic spline to find the non-linear association between them. Results Among 7,342 community older adults engaged by CHARLS in 2015, the incidence of possible sarcopenia and sarcopenia was 23.14 and 11.30%, separately. Sleep duration (≤6 h) [OR(95%CI) = 1.30(1.03–1.65), p < 0.05] and (≥8 h) [OR(95%CI) = 1.33(1.05–1.69), p < 0.05] were significantly linked with possible sarcopenia, while long sleep duration (≥8 h) [OR(95%CI) = 1.41(1.01–2.02), p < 0.05] was correlated strongly with sarcopenia. A non-linear relationship (U-shaped) between sarcopenia risk and sleep duration was found (p for non-linear = 0.009). Conclusions Our findings highlight the importance of sleep duration in the onset of sarcopenia and might assist older persons to maintain good sleeping habits.

Self-Reported Sleep Duration Is a Useful Tool to Predict Sarcopenia in Chilean Older Adults: Evidence from the ALEXANDROS Longitudinal Study

“…We found that the difficulty in falling asleep, the use of sleep drugs, and consulting a doctor for sleep problems were higher in females, in line with previous studies reporting differential sleep in females compared to males [ 37 ]. Moreover, recent research has shown a higher prevalence of sarcopenia in the short sleep and long sleep duration group compared with women in the normal sleep duration group, and these gender differences in sleep patterns are consistent with our findings [ 17 , 23 ].…”

“…Long sleep showed more than twice the frequency in sarcopenic (22.67%) relative to nonsarcopenic (9.47%) participants, and 42.5% of the participants sleeping 9 or more hours developed sarcopenia. Similar results were found in older Chinese [23,30] and Korean [18] population cohorts, where long sleep would increase this risk twofold [19], using the same cut-off points [18,30].…”

“…Anthropometric measurements included knee height, calf circumference, and hip circumference for the estimation of muscle mass. Muscle mass was estimated using the appendicular skeletal muscle mass (ASM) prediction equation based on anthropometric measurements [ 23 ]. For Chilean older people, the ASM vas previously validated and correlated with dual-energy X-ray absorptiometry (DEXA) [ 24 ]: ASM (kg) = 0.107 (weight in kg) + 0.251 (knee height in cm) + 0.197 (calf circumference in cm) + 0.047 (dynamometry in kg) − 0.034 (hip circumference in cm) + 3.417 (sex male) − 0.020 (age in years) − 7.646; and the estimated cut-off points for reduced muscle mass were ≤7.45 kg/m 2 in men and ≤5.88 kg/m 2 in women [ 24 ].…”