Gender-specific Association of Sleep Duration with Body Mass Index, Waist Circumference, and Body Fat in Chinese Adults.

Liu Xia Yan; Xiao Rong Chen; Bo Chen; Ya Min Bai; Jian Hong LI; Xin Wei Zhang; Zhong Dong; Hao Wang; Sheng Quan MI; Wen Hua Zhao

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Gender-specific Association of Sleep Duration with Body Mass Index, Waist Circumference, and Body Fat in Chinese Adults.

Author: Liu Xia YAN ¹ ; Xiao Rong CHEN ¹ ; Bo CHEN ¹ ; Ya Min BAI ¹ ; Jian Hong LI ¹ ; Xin Wei ZHANG ² ; Zhong DONG ³ ; Hao WANG ² ; Sheng Quan MI ⁴ ; Wen Hua ZHAO ⁵
Author Information

1. National Center for Chronic and Noncommunicable Disease Control and Prevention, Beijing 100050, China.
2. Institute of Chronic Disease Control and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou 310006, Zhejiang, China.
3. Institute of Chronic Disease Control and Prevention, Beijing Center for Disease Control and Prevention, Beijing 100053, China.
4. College of Applied Arts and Science of Beijing Union University, Beijing 100101, China.
5. National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
Publication Type:Journal Article
Keywords: Gender; Obesity; Quantile regression; Sleep duration
MeSH: Adipose Tissue; physiology; Adult; Asian Continental Ancestry Group; Body Mass Index; China; Female; Humans; Male; Middle Aged; Rural Population; Sleep; physiology; Surveys and Questionnaires; Urban Population; Waist Circumference
From: Biomedical and Environmental Sciences 2017;30(3):157-169
CountryChina
Language:English
Abstract:
OBJECTIVETo examine the association between habitual sleep duration and obesity among Chinese adults.
METHODSThe association of sleep duration and obesity was investigated among 7,094 community-dwelling Chinese adults. Sleep duration was self-reported. In this study, obesity was defined as follows: body mass index (BMI) ⋝ 28 kg/m2, waist circumference (WC) ⋝ 85 cm in men and ⋝ 80 cm in women, and percent body fat (%BF) ⋝ 25 in men and ⋝ 35 in women. Logistic and quantile regressions were employed to examine relationships of interest.
RESULTSOverall, 6.42% of the participants reported short sleep durations (< 6 h/d) while 14.71% reported long (⋝ 9 h/d) sleep durations. Long sleepers (⋝ 9 h/d) represented a greater frequency of women with obesity [odds ratio (OR): 1.30; 95% confidence interval (CI), 1.02-1.67] and high body fat (1.43, 1.04-1.96) than those who slept 7-8 h/d. An association between long sleep times and higher BMI estimations was found across the 10th-75th percentile of the BMI distribution. Among men, long sleepers (⋝ 9 h/d) presented lower risks of developing abdominal obesity compared with individuals who slept 7-8 h/d (OR = 0.79, 95% CI: 0.44-0.99).
CONCLUSIONOur study suggests that long sleep durations are associated with general obesity in Chinese women but reduced waist circumferences in men. Confirmatory studies are needed to determine the heterogeneous association of sleep time and obesity by gender.