Jiang L, Yan S Q, Geng M L, Gu C L, Huang K, Cao H, Wu X Y, Tao F B
Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Anhui Provincial Laboratory of Population Health and Eugenics, Hefei 230032, China.
Zhonghua Yu Fang Yi Xue Za Zhi. 2018 Nov 6;52(11):1146-1151. doi: 10.3760/cma.j.issn.0253-9624.2018.11.010.
To examine the relationship of nighttime sleep duration and bedtime with preschool children's obesity, and to explore possible early life risk factors for childhood obesity. A total of 14 946 valid children from 16 439 pre-school children aged 3-6 years in 91 kindergartens in Ma'anshan city participated in the study. The body mass index cut-offs for overweight and obesity in Chinese children and adolescents aged 2-18 years was used as the criterion for judging overweight and obesity, and pathological and secondary causes of obesity were excluded. The associations of nighttime sleep duration and bedtime with preschool children's obesity was analyzed by using non-conditional multivariate binary logistic regression model. Among the preschool children, 22.4% (3 345) had shorter sleep duration. 9.5% (1 415) had bedtimes after 22:00 on weekdays and 21.8% (3 260) had bedtimes after 22:00 on weekends. The prevalence of overweight and obesity were 16.5% (2 466) and 10.5% (1 562), respectively. After the adjustent of age, gender, whether or not only child, residence in the last six months, parents' body mass index parents' educational level, diet preference, outdoor activities, TV viewing duration, sleep duration, bedtime on weekdays and weekends, only the shorter sleep duration (1.25, 95: 1.03-1.51) was still positively associated with the prevalence of obesity in preschool children. Shorter sleep duration was positively associated with the prevalence of obesity among preschool children.
探讨夜间睡眠时间和就寝时间与学龄前儿童肥胖的关系，并探索儿童肥胖可能的早期生活风险因素。马鞍山市91所幼儿园的16439名3至6岁学龄前儿童中，共有14946名有效儿童参与了该研究。采用中国2至18岁儿童青少年超重和肥胖的体重指数切点作为判断超重和肥胖的标准，并排除肥胖的病理和继发原因。使用非条件多变量二元逻辑回归模型分析夜间睡眠时间和就寝时间与学龄前儿童肥胖的关联。在学龄前儿童中，22.4%（3345名）睡眠时间较短。9.5%（1415名）在工作日22:00后就寝，21.8%（3260名）在周末22:00后就寝。超重和肥胖的患病率分别为16.5%（2466名）和10.5%（1562名）。在调整年龄、性别、是否独生子女、过去六个月的居住地、父母的体重指数、父母的教育水平、饮食偏好、户外活动、看电视时间、睡眠时间、工作日和周末的就寝时间后，只有较短的睡眠时间（1.25，95%CI：1.03-1.51）仍与学龄前儿童肥胖的患病率呈正相关。较短的睡眠时间与学龄前儿童肥胖的患病率呈正相关。
