Lee Mee-Ri, Hwangbo Young, Kim Jee Hyun, Yang Kwang Ik, Hong Seung Bong
Department of Preventive Medicine, Soonchunhyang University College of Medicine, Cheonan, South Korea.
Department of Neurology, Ewha Womans University Seoul Hospital, Ewha Womans University College of Medicine, Seoul, South Korea.
Sleep Breath. 2025 May 14;29(2):184. doi: 10.1007/s11325-025-03349-5.
This study investigates the association between weekend catch-up sleep (CUS) and overweight/obesity in Korean adolescents, focusing on weekday sleep sufficiency.
A nationwide cross-sectional study was conducted among 12,434 high school students in South Korea. Sleep patterns including total sleep duration and weekend CUS were assessed using self-reported questionnaires. Body mass index (BMI) was calculated and categorized into overweight/obese and normal weight groups based on age- and sex-adjusted Z-scores. Logistic and linear regression models were used to assess the associations between sleep variables and overweight/obesity.
Students with 3 or more h of CUS had lower odds of being overweight/obesity (odds ratio = 0.67, 95% confidence interval: 0.57-0.80) compared to those with non-CUS. This protective effect remained significant in the subgroup with perceived insufficient weekday sleep. Furthermore, students with 3 or more h of CUS had significantly lower BMI z-scores (β = -0.18, p < 0.001), an association that was also observed in those with perceived insufficient sleep (β = -0.16, p = 0.003). The analysis showed a dose-dependent pattern, with greater weekend CUS being associated with a stepwise reduction in BMI z-scores.
Weekend CUS may serve as an important compensatory mechanism for adolescents to reduce the risk of being overweight or obese. However, no additional benefits of CUS were observed in adolescents with sufficient sleep quality.
本研究调查韩国青少年周末补觉（CUS）与超重/肥胖之间的关联，重点关注平日睡眠充足情况。
在韩国12434名高中生中开展了一项全国性横断面研究。使用自我报告问卷评估包括总睡眠时间和周末补觉在内的睡眠模式。计算体重指数（BMI），并根据年龄和性别调整后的Z分数将其分为超重/肥胖组和正常体重组。采用逻辑回归和线性回归模型评估睡眠变量与超重/肥胖之间的关联。
与无补觉的学生相比，补觉3小时及以上的学生超重/肥胖几率较低（优势比=0.67，95%置信区间：0.57-0.80）。在平日睡眠不足的亚组中，这种保护作用仍然显著。此外，补觉3小时及以上的学生BMI z分数显著更低（β=-0.18，p<0.001），在睡眠不足的学生中也观察到这种关联（β=-0.16，p=0.003）。分析显示出剂量依赖模式，周末补觉越多，BMI z分数逐步降低。
周末补觉可能是青少年降低超重或肥胖风险的重要补偿机制。然而，在睡眠质量充足的青少年中未观察到补觉的额外益处。
