Report on Childhood Obesity in China (10): Association of Sleep Duration with Obesity

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• 作者：Li Ping MENG^aAuthor Vitae ; Ai Ling LIU^a ; Xiao Qi HU^a ; Qian ZHANG^a ; Song Ming DU^a ; Hong Yun FANG^a ; Jun MA^b ; ^§ ; ; Gui Fa XU^c ; ^§ ; ; Ying LI^d ; ^§ ; ; Hong Wei GUO^e ; ^§ ; ; Lin DU^f ; ^§ ; ; Guan Sheng MA^a ; ^{mags@chinacdc.cn}
• 关键词：Sleep duration ; Obesity ; Children ; China
• 刊名：Biomedical and Environmental Sciences
• 出版年：2012
• 出版时间：April, 2012
• 年：2012
• 卷：25
• 期：2
• 页码：133-140
• 全文大小：1K

文摘

Objective

To explore the association of sleep duration with obesity among children in urban areas of China.

Methods

A total of 6 576 children (3 293 boys and 3 283 girls) aged 7-11 years were randomly selected from 36 primary schools in 6 metropolitan cities in China. A 7-day Physical Activity Recall was used to assess the sleep duration and physical activity level. The height, weight, waist circumference (WC) and percentage of body fat ( % BF, as determined by bioelectrical impedance analysis technique) were measured by following the standardized operation procedures. The information on demography, lifestyle and eating habits was collected with a self-administered questionnaire from participants and their parents.

Results

The average sleep duration per night in the children was 9.7 h with the decreasing trends along with the increase of age (P<0.05). The sleep duration was negatively associated with body mass index (BMI) and WC in both boys and girls after adjustment for confounders (¦Â value ?0.23 and ?0.82 for boys, ?0.24 and ?0.91 for girls, respectively, P<0.01). However, no significant association of sleep duration with % BF was found. Children who slept less than 9.0 h per night had a higher risk for overweight and obesity (OR=1.29, 95 % CI: 1.01, 1.64) and abdominal obesity (OR=1.38, 95 % CI: 1.04, 1.83) as compared with those who slept for 10.0?10.9 h.

Conclusions

Short sleep duration is associated with obesity. It is important to ensure adequate sleep duration of children and foster their healthy lifestyle at an early stage of life.