Singh Meeta, Drake Christopher L, Roehrs Timothy, Hudgel David W, Roth Thomas
Henry Ford Hospital Sleep Disorders and Research Center, Wayne State College of Medicine, Detroit, MI 49202, USA.
J Clin Sleep Med. 2005 Oct 15;1(4):357-63.
To assess the association between nightly total sleep time (TST) and obesity in an epidemiologic sample of metropolitan Detroit, Michigan.
Data were collected through telephone interviews completed using a population-based sample of 3158. The self-reported average nightly TST during the 2 weeks before the interview was used to divide the sample into 6 groups (hours per night of sleep; < or = 5, > 5 < or = 6, > 6 < or = 7, > 7 < or = 8, > 8 < or = 9, > 9). Obesity was defined as a body mass index > or = 30. Health and demographic variables were also assessed.
The overall prevalence of obesity was 24.8% and was significantly higher in individuals with lower amounts of TST. Compared with those with 7 to 8 hours of TST, individuals obtaining 5 hours or less and more than 5 but 6 hours or less of TST had significantly increased odds of being obese, after controlling for age, sex, loud snoring, hypertension, diabetes, arthritis, and alcohol intake (odds ratio = 1.7, 95% confidence interval = 1.3-2.3 and odds ratio = 1.4, 95% confidence interval = 1.1-1.8, respectively). A low TST was a significant predictor of a high body mass index. Furthermore, a low TST was also a significant predictor of diabetes, prior to controlling for body mass index. Interestingly, the prevalence of reduced habitual TST (< or = 5 hours) was higher in African Americans, in comparison with Caucasians (18.7% vs 7.4%; p < .001).
Our population-based data suggest that short sleep duration is associated with elevated prevalence of obesity and adds to the growing body of evidence supporting this relationship.
在密歇根州底特律市的一个流行病学样本中，评估夜间总睡眠时间（TST）与肥胖之间的关联。
通过电话访谈收集数据，采用基于人群的3158个样本。访谈前2周自我报告的平均夜间TST用于将样本分为6组（每晚睡眠时间；≤5小时、>5≤6小时、>6≤7小时、>7≤8小时、>8≤9小时、>9小时）。肥胖定义为体重指数≥30。还评估了健康和人口统计学变量。
肥胖的总体患病率为24.8%，TST较少的个体中肥胖患病率显著更高。在控制年龄、性别、大声打鼾、高血压、糖尿病、关节炎和酒精摄入量后，与TST为7至8小时的个体相比，TST为5小时或更少以及超过5但6小时或更少的个体肥胖几率显著增加（优势比分别为1.7，95%置信区间为1.3 - 2.3和优势比为1.4，95%置信区间为1.1 - 1.8）。低TST是高体重指数的显著预测因素。此外，在控制体重指数之前，低TST也是糖尿病的显著预测因素。有趣的是，与白种人相比，非裔美国人习惯性TST减少（≤5小时）的患病率更高（18.7%对7.4%；p <.001）。
我们基于人群的数据表明，短睡眠时间与肥胖患病率升高有关，并为支持这种关系的越来越多的证据增添了内容。
