Associations of Social Jetlag with Dietary Behavior, Physical Activity and Obesity among Chinese Adolescents.
Associations of Social Jetlag with Dietary Behavior, Physical Activity and Obesity among Chinese Adolescents.
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作者：
Liang F;Fu J;Xu Y;Wang Y;Qiu N;Ding K;Zeng J;Moore JB;Li R
本研究旨在调查中国青少年的社会时差（SJL）、饮食行为、体力活动和体重状况之间的关联。数据来源于 2019 年在中国武汉进行的一项横断面调查。通过自我报告的问卷收集了有关 SJL、食品和饮料消费频率、体力活动和 BMI 类别的信息。进行 Kruskal-Wallis 检验和方差分析以确定 SJL 组之间食物和饮料组的每日消费频率、BMI 类别和体力活动的差异。进行逻辑回归和限制三次样条来测试 SJL 与超重或肥胖发生率之间的关联。 3567 名中国青少年的最终样本[平均 (SD) 年龄，14.67 (1.72) 岁； 47.41%（1691）女性]被纳入。我们的研究结果表明，患有 SJL 的青少年可能会消耗更多的不健康食物和更少的有益食物，同时进行不太温和到剧烈的体力活动 (MVPA)，并报告较高的 BMI。此外，经历超过 2 小时 SJL 的青少年超重或肥胖的风险显着增加。我们对中国青少年 SJL 的研究结果证实了 SJL 的有害影响，也为中国青少年肥胖的病因学提供了见解。
This study aimed to investigate the associations between social jetlag (SJL), dietary behavior, physical activity, and weight status in Chinese youth. Data were derived from a cross-sectional survey in Wuhan, China in 2019. Information on SJL, the frequency of food and beverage consumption, physical activity, and BMI category were collected via a self-reported questionnaire. The Kruskal-Wallis test and ANOVA were conducted to determine differences in daily consumption frequency of food and beverage groups, BMI category, and physical activity among SJL groups. Logistic regressions and restricted cubic splines were performed to test the association between SJL and the incidence of overweight or obesity. A final sample of 3567 Chinese adolescents [mean (SD) age, 14.67 (1.72) years; 47.41% (1691) female] were included. Our findings demonstrated that adolescents with SJL may consume more unhealthy foods and fewer beneficial foods, while engaging in less moderate to vigorous physical activity (MVPA) and reporting higher BMIs. In addition, adolescents who experience more than 2 h of SJL had significant greater risk of overweight or obesity. Our findings on SJL of Chinese adolescents confirm the harmful effects of SJL and also provide insights into the etiology of obesity in Chinese adolescents.