Department of Pediatrics, Gyeongsang National University Changwon Hospital, Changwon, Korea.
Department of Computer Engineering, Hallym University School of Software, Chuncheon, Korea.
Child Obes. 2020 Jun;16(4):281-290. doi: 10.1089/chi.2019.0191. Epub 2020 Mar 16.
This study aimed to evaluate the relationship between sleep duration and body composition as measured by dual-energy X-ray absorptiometry (DXA). Based on data obtained from the Korea National Health and Nutrition Examination Survey (2010), 303 girls were divided into three groups by sleep duration: very short, short, and recommended. By analysis of covariance, compared with the "very short" group, the "recommended" group had reduced adjusted mean DXA-assessed total mass (TM, 46.46 kg vs. 51.36 kg, = 0.012), fat mass (FM, 14.38 kg vs. 17.55 kg, = 0.002), and fat mass percentage (FMP, 30.66% vs. 33.15%, = 0.017) in the whole body; TM (20.85 kg vs. 23.63 kg, = 0.007), FM (5.82 kg vs. 7.64 kg, = 0.001), and FMP (27.48% vs. 30.70%, = 0.009) in the trunk; TM (4.59 kg vs. 5.15 kg, = 0.006), FM (1.62 kg vs. 2.05 kg, = 0.001), and FMP (27.48% vs. 30.70%, = 0.019) in the arms; and TM (16.75 kg vs. 18.23 kg, = 0.042) and FM (6.09 kg vs. 6.97 kg, = 0.018) in the legs. By multiple linear regression analysis, sleep duration in hours had a significant negative association with DXA-assessed TM ( = -1.221, = 0.016) and FM ( = -0.760, = 0.006) in the whole body; FM ( = -0.014, = 0.026) in the head; TM ( = -0.699, = 0.010), FM ( = -0.454, = 0.003), and FMP ( = -0.714, = 0.030) in the trunk; TM ( = -0.152, = 0.005) and FM ( = -0.101, = 0.004) in the arms; and FM ( = -0.191, = 0.045) in the legs. Our results suggest that shorter sleep duration is related to higher FM, but not lean mass, especially in the trunk.
本研究旨在评估通过双能 X 射线吸收法（DXA）测量的睡眠时长与身体成分之间的关系。基于 2010 年韩国国家健康和营养检查调查的数据，303 名女孩根据睡眠时长分为三组：非常短、短和推荐。通过协方差分析，与“非常短”组相比，“推荐”组的 DXA 评估的总质量（TM）、脂肪量（FM）和脂肪百分比（FMP）均有所降低，全身分别为 46.46kg（41.36kg，=0.012）、14.38kg（17.55kg，=0.002）和 30.66%（33.15%，=0.017）；躯干分别为 20.85kg（23.63kg，=0.007）、5.82kg（7.64kg，=0.001）和 27.48%（30.70%，=0.009）；手臂分别为 4.59kg（5.15kg，=0.006）、1.62kg（2.05kg，=0.001）和 27.48%（30.70%，=0.019）；腿部分别为 16.75kg（18.23kg，=0.042）和 6.09kg（6.97kg，=0.018）。通过多元线性回归分析，睡眠时间与 DXA 评估的 TM（= -1.221，=0.016）和 FM（= -0.760，=0.006）呈显著负相关，全身；头部的 FM（= -0.014，=0.026）；TM（= -0.699，=0.010）、FM（= -0.454，=0.003）和 FMP（= -0.714，=0.030）在躯干；TM（= -0.152，=0.005）和 FM（= -0.101，=0.004）在手臂；以及腿部的 FM（= -0.191，=0.045）。我们的结果表明，较短的睡眠时间与较高的 FM 有关，但与瘦体重无关，尤其是在躯干。
