Baba Asami, Yoshitake Rikako, Inose Yumiko, Omi Naomi
Graduate School of Comprehensive Human Sciences, University of Tsukuba.
Department of Health and Nutrition, Faculty of Human Sciences, Tokiwa University.
J Nutr Sci Vitaminol (Tokyo). 2025;71(3):248-255. doi: 10.3177/jnsv.71.248.
This cross-sectional study examined the link between screen time and lifestyle habits in upper elementary school children. It included 400 elementary schoolchildren studying in the fifth and sixth grades in elementary (187 boys, 213 girls, age: 10-12 y) in Japan. Gender, obesity index, physical fitness score, screen time, and lifestyle habits related to breakfast, midnight snacks, exercise, and sleep were the study items. Using logistic regression analysis, we examined lifestyle habits factors and screen time as the dependent and independent variables, respectively. We found that >3 h of screen time was significantly associated with increased odds of eating breakfast sometimes or never (odds ratio [95% confidence interval] 2.37 [1.05, 5.38]) and eating midnight snacks (2.72 [1.41, 5.23]). Additionally, the same factor significantly associated with <6 h of sleep (10.45 [2.78, 39.30]) and bedtime later than 10 pm (2.81 [1.43, 5.53]) and 11 pm (3.97 [1.95, 8.07]). These results hold true even after accounting for demographics, obesity index, and physical fitness score. Conversely, 2-3 h of screen time was significantly associated with sleep onset conditions (2.05 [1.17, 3.58]), whereas >3 h of screen time was not. Our results showed that increased screen time was associated with skipping breakfast, midnight snacks, sleep onset conditions, and less bedtime.
这项横断面研究调查了小学高年级学生的屏幕使用时间与生活习惯之间的联系。研究对象包括400名在日本小学五、六年级就读的小学生（187名男生，213名女生，年龄：10 - 12岁）。研究项目包括性别、肥胖指数、体能得分、屏幕使用时间以及与早餐、夜宵、运动和睡眠相关的生活习惯。我们分别将生活习惯因素和屏幕使用时间作为因变量和自变量，采用逻辑回归分析。我们发现，屏幕使用时间超过3小时与有时或从不吃早餐（优势比[95%置信区间]2.37[1.05, 5.38]）以及吃夜宵（2.72[1.41, 5.23]）的几率增加显著相关。此外，同一因素与睡眠时间不足6小时（10.45[2.78, 39.30]）、晚上10点以后（2.81[1.43, 5.53]）和晚上11点以后（3.97[1.95, 8.07]）睡觉显著相关。即使在考虑了人口统计学因素、肥胖指数和体能得分之后，这些结果依然成立。相反，屏幕使用时间为2 - 3小时与入睡情况显著相关（2.05[1.17, 3.58]），而屏幕使用时间超过3小时则不然。我们的研究结果表明，屏幕使用时间增加与不吃早餐、吃夜宵、入睡情况以及就寝时间减少有关。
