Global Health Institute, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China.
Community Health Sciences Division, School of Public Health, University of California, Berkeley, Berkeley, CA, USA.
Pediatr Res. 2021 Nov;90(5):971-979. doi: 10.1038/s41390-021-01365-1. Epub 2021 Feb 2.
The aim of the study was to examine correlates of sleep and assess its associations with weight status and related behaviors.
Data were collected in 2015-2017 for 3298 children aged 6-17 years and their parents in 5 Chinese mega-cities. One thousand six hundred and ninety-one children with measured weight, height, and waist circumference in ≥2 surveys were included for longitudinal data analyses. Sleep and behaviors were self-reported.
Cross-sectional data analyses found that older (β = -0.29, 95% CI: -0.32, -0.27) and secondary school children (β = -1.22, 95% CI: -1.31, -1.13) reported shorter sleep than their counterparts. Children with ≥college-educated (vs <college) fathers (β = 0.17, 95% CI: 0.04, 0.31) or mothers (β = 0.16, 95% CI: 0.04, 0.29) reported longer sleep. Longer sleep was longitudinally associated with less sugar-sweetened beverage intake (β = -0.12 days/h sleep, 95% CI: -0.20, -0.03), more healthy snacks intake (β = 0.13 days/h sleep, 95% CI: 0.02, 0.25) and having breakfast (β = 0.07 days/h sleep, 95% CI: 0.04, 0.11), and shorter total screen time (β = -0.22 h/h sleep, 95% CI: -0.65, -0.21) and surfing the internet/computer time (β = -0.06 h/h sleep, 95% CI: -0.09, -0.04) among all children. Longer sleep reduced the risk of central obesity (OR = 0.46, 95% CI: 0.25, 0.85) for girls.
Sleep among urban Chinese children varies by demographic factors. Longer sleep is associated with healthier weight-related behaviors and lower central obesity risk.
Longer sleep was observed in younger, primary school children and children with college-educated parents. Longer sleep increased healthier weight-related behaviors and reduced general and central obesity risk. Provides data on the correlates of sleep duration of children. Gives insights on longitudinal relationships of sleep duration with weight-related behaviors and obesity risk. Findings help inform sleep interventions to increase sleep duration to prevent childhood obesity and unhealthy weight-related behaviors in urban settings of developing countries.
本研究旨在探讨睡眠的相关因素，并评估其与体重状况和相关行为的关系。
2015-2017 年，在中国五个特大城市中收集了 3298 名 6-17 岁儿童及其父母的数据。在≥2 次测量中测量了体重、身高和腰围的 1691 名儿童被纳入纵向数据分析。睡眠和行为是自我报告的。
横断面数据分析发现，年龄较大（β=-0.29，95%CI：-0.32，-0.27）和中学儿童（β=-1.22，95%CI：-1.31，-1.13）比同龄人报告的睡眠时间更短。父亲（β=0.17，95%CI：0.04，0.31）或母亲（β=0.16，95%CI：0.04，0.29）受过大学教育的儿童比父亲（β=0.17，95%CI：0.04，0.31）或母亲（β=0.16，95%CI：0.04，0.29）报告的睡眠时间更长。睡眠时间较长与糖饮料摄入量减少（β=-0.12 天/小时睡眠，95%CI：-0.20，-0.03）、健康零食摄入量增加（β=0.13 天/小时睡眠，95%CI：0.02，0.25）和吃早餐（β=0.07 天/小时睡眠，95%CI：0.04，0.11）呈正相关，与总屏幕时间（β=-0.22 小时/小时睡眠，95%CI：-0.65，-0.21）和上网/计算机时间（β=-0.06 小时/小时睡眠，95%CI：-0.09，-0.04）呈负相关。在所有儿童中，较长的睡眠时间降低了女孩中心性肥胖的风险（OR=0.46，95%CI：0.25，0.85）。
城市中国儿童的睡眠情况因人口统计学因素而异。睡眠时间较长与更健康的体重相关行为和较低的中心性肥胖风险有关。
睡眠时间较长的儿童年龄较小，处于小学阶段，父母接受过大学教育。较长的睡眠时间增加了与健康相关的体重行为，并降低了一般和中心性肥胖的风险。提供了有关儿童睡眠时间相关因素的信息。提供了睡眠时间与体重相关行为和肥胖风险的纵向关系的见解。研究结果有助于告知睡眠干预措施，以增加睡眠时间，从而预防发展中国家城市环境中的儿童肥胖和不健康的体重相关行为。
