Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.
Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.
Nutrients. 2022 Jul 11;14(14):2840. doi: 10.3390/nu14142840.
Background: The relationship between sleep duration and different regional fat is unclear. We aimed to investigate the association between sleep duration and different regional fat mass (FM) among a population of US adults. Methods: 9413 participants were included from the National Health and Nutrition Examination Survey (NHANES), from 2011 to 2018. The sleep duration was divided into short sleep (<7 h/day), normal sleep (7−9 h/day) and long sleep (>9 h/day). Different regional FM was measured by dual-energy X-ray absorptiometry, including trunk FM, arms FM and legs FM. Fat mass index (FMI) was obtained by dividing FM (kg) by the square of body height (m2). Multiple linear regression was used to evaluate the relationship between sleep duration and regional FMI. Results: The mean sleep duration was 7.1 ± 1.5 h/day. After adjusting for socio-demographic, lifestyle information, comorbid diseases and medications, short sleepers had higher trunk FMI (β = 0.134, 95% confidence interval (CI): 0.051−0.216, p = 0.001), arms FMI (β = 0.038, 95% CI: 0.016−0.06, p < 0.001) and legs FMI (β = 0.101, 95% CI: 0.044−0.158, p < 0.001) compared to normal sleepers, whereas no significant difference was found in long sleepers. The similar results were also observed in men, while short sleepers only had higher arms FM in women (all p < 0.01). In addition, compared to normal sleepers, short sleepers had higher arms FMI and legs FMI in the obese group (all p < 0.05), while no relationship was observed in non-obese group. Conclusions: Short sleep duration, but not long sleep duration, was independently related to the increased different regional body fat in US adults, especially in men and those with obesity.
睡眠时长与不同部位脂肪之间的关系尚不明确。本研究旨在调查美国成年人中睡眠时长与不同部位脂肪量（FM）之间的关系。
纳入 2011 年至 2018 年国家健康和营养调查（NHANES）中的 9413 名参与者。将睡眠时长分为短睡（<7 h/天）、正常睡眠（7-9 h/天）和长睡（>9 h/天）。采用双能 X 射线吸收法测量不同部位 FM，包括躯干 FM、手臂 FM 和腿部 FM。脂肪质量指数（FMI）通过 FM（kg）除以身高的平方（m2）计算得出。采用多元线性回归评估睡眠时长与各部位 FMI 之间的关系。
平均睡眠时长为 7.1 ± 1.5 h/天。在校正社会人口统计学、生活方式信息、合并症和药物后，与正常睡眠者相比，短睡者的躯干 FM（β=0.134，95%置信区间：0.051-0.216，p=0.001）、手臂 FM（β=0.038，95%置信区间：0.016-0.06，p<0.001）和腿部 FM（β=0.101，95%置信区间：0.044-0.158，p<0.001）更高，而长睡者则无显著差异。这些结果在男性中也得到了相似的观察，而在女性中，仅短睡者手臂 FM 更高（均 p<0.01）。此外，与正常睡眠者相比，短睡者在肥胖组中手臂 FMI 和腿部 FMI 更高（均 p<0.05），而非肥胖组中则无相关性。
与正常睡眠者相比，短睡与美国成年人不同部位体脂增加独立相关，尤其是在男性和肥胖者中。
