Lu Tingyu, Li Meng, Zhang Ruihang, Li Ruiqiang, Shen Shaojun, Chen Qiuxia, Liu Rong, Wang Jiao, Qu Yabin, Xu Lin
School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Guangzhou 511430, China.
Nutrients. 2025 May 9;17(10):1633. doi: 10.3390/nu17101633.
: To assess the associations between academic study- and non-study-related sedentary behaviors and the risk of overweight/obesity in children and adolescents, as well as their joint association with sugar-sweetened beverage (SSB) consumption. : Sedentary behaviors and SSB consumption were assessed using self-reported questionnaires. Overweight/obesity were defined by age- and sex-specific body mass index cut-off values according to the criteria of "Screening for overweight and obesity among school-age children and adolescents" in China. Poisson regression with robust error variance was used to assess the associations of sedentary behaviors and/or SSB consumption with the risk of overweight/obesity, yielding relative risks (RRs) and 95% confidence intervals (CIs). The Shapley additive explanations (SHAP) method was used to rank the contribution of five specific sedentary behaviors to obesity risk. : Among 47,148 participants with a 3-year follow-up, longer durations of screen-related, academic study-related, and total sedentary time were each associated with a higher risk of overweight/obesity (adjusted RR (95% CI) per hour increment: 1.01 (1.00-1.02), 1.03 (1.01-1.06), and 1.02 (1.01-1.03)). After mutual adjustment, the associations of engaging in homework, attending tutorial classes, and using mobile electronic devices remained significantly associated with higher overweight/obesity risk. The SHAP summary plot shows that using mobile electronic devices, attending tutorial classes, and doing homework were the three most important sedentary obesogenic contributors. A significant interaction of age with sedentary time was found ( for interaction < 0.05). No significant interaction was found between SSB consumption and sedentary time. : Excessive sedentary behaviors were associated with a higher risk of overweight/obesity, particularly due to mobile electronic device use, attending tutorial classes, and doing homework.
评估与学业相关及非学业相关的久坐行为与儿童和青少年超重/肥胖风险之间的关联，以及它们与含糖饮料（SSB）消费的联合关联。使用自我报告问卷评估久坐行为和SSB消费情况。根据中国“学龄儿童青少年超重与肥胖筛查”标准，采用年龄和性别特异性体重指数临界值定义超重/肥胖。采用具有稳健误差方差的泊松回归评估久坐行为和/或SSB消费与超重/肥胖风险的关联，得出相对风险（RRs）和95%置信区间（CIs）。使用夏普利加性解释（SHAP）方法对五种特定久坐行为对肥胖风险的贡献进行排名。在47148名有3年随访的参与者中，与屏幕相关、与学业相关的久坐时间以及总久坐时间越长，超重/肥胖风险越高（每增加一小时的调整后RR（95%CI）：1.01（1.00 - 1.02）、1.03（1.01 - 1.06）和1.02（1.01 - 1.03））。相互调整后，做家庭作业、参加辅导班和使用移动电子设备与较高的超重/肥胖风险仍显著相关。SHAP汇总图显示，使用移动电子设备、参加辅导班和做家庭作业是导致肥胖的三种最重要的久坐行为因素。发现年龄与久坐时间存在显著交互作用（交互作用P<0.05）。未发现SSB消费与久坐时间之间存在显著交互作用。久坐行为过多与超重/肥胖风险较高相关，尤其是由于使用移动电子设备、参加辅导班和做家庭作业。
