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Beyond sleep duration: Sleep timing as a risk factor for childhood obesity

机译:超越睡眠时间:睡眠时间作为儿童肥胖的危险因素

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Background Ample evidence attests to the relationship between short sleep duration, sleep problems and childhood obesity. However, few studies have examined the association between sleep timing and obesity in children. Objectives To investigate how sleep duration, problems and timing relate to obesity and obesogenic behaviours in children. Methods Eighty-five children (58.8% girls) with severe obesity and mean (SD) age of 12.1 (2.9) years, were matched by age and sex with peers with normal weight (n = 85,12.0 [2.8] years). Sleep and moderate-to-vigorous physical activity (MVPA) were measured via accelerometer for seven consecutive days. Children self-reported emotional eating on the Dutch eating behavior questionnaire. Parents reported children's screen time and sleep problems. Results Children with severe obesity had significantly later mean mid-sleep time, overall (36 minutes later,P< .001), on school nights (36 minutes later,P < .001) and weekend nights (39 minutes later,P= .002) compared to children with normal weight. Children with obesity had more sleep problems (P= .030), but no differences emerged in sleep duration or social jetlag. After adjusting for demographic factors, mid-sleep time was positively related to screen time (P= .030). Mid-sleep time and sleep duration were inversely related to time in MVPA (Ps <= .041). There were no other significant associations between the sleep variables and the obesogenic behaviours. Conclusions Later sleep timing was related to obesogenic behaviours in children and may represent an obesity risk factor.
机译:背景大量证据证明睡眠时间短、睡眠问题和儿童肥胖之间的关系。然而,很少有研究调查儿童睡眠时间与肥胖之间的关系。目的研究睡眠时间、问题和时间与儿童肥胖和肥胖行为的关系。方法85名重度肥胖儿童(58.8%为女孩),平均年龄12.1(2.9)岁,与体重正常的同龄人(n=85,12.0[2.8]岁)进行年龄和性别匹配。连续七天通过加速计测量睡眠和中等至剧烈体力活动(MVPA)。在荷兰饮食行为问卷上,儿童自我报告情绪性饮食。父母报告了孩子的屏幕时间和睡眠问题。结果与正常体重儿童相比,重度肥胖儿童总体平均睡眠时间(36分钟后,P<0.001)、上学之夜(36分钟后,P<0.001)和周末之夜(39分钟后,P=0.002)显著推迟。肥胖儿童有更多的睡眠问题(P=0.030),但在睡眠时间或社交时差上没有差异。调整人口统计学因素后,中期睡眠时间与屏幕时间呈正相关(P=0.030)。中期睡眠时间和睡眠持续时间与MVPA中的时间呈负相关(Ps<=0.041)。睡眠变量与肥胖行为之间没有其他显著关联。结论儿童晚睡眠时间与肥胖行为有关,可能是肥胖的一个危险因素。

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