The University of Tokyo, Graduate School of Education, Department of Physical and Health Education, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan.
The University of Tokyo, Graduate School of Education, Department of Physical and Health Education, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan; Department of Neuropsychiatry, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi, Tokyo 173-0003, Japan; Japan Society for the Promotion of Science, 5-3-1, Koujimachi, Chiyoda-ku, Tokyo 102-0083, Japan.
Psychiatry Res. 2019 Mar;273:456-460. doi: 10.1016/j.psychres.2018.12.085. Epub 2018 Dec 18.
Although effects of sleep duration and physical activity (PA) have been demonstrated on mental health in adolescents, their interactive effect has not been studied. This cross-sectional study first examines this interactive effect on anxiety/depression in adolescents. A total of 983 Japanese students aged 12-17 were studied, using a self-report questionnaire. The interaction of sleep duration and amount of PA and their main effects on anxiety/depression, assessed using the 12-item General Health Questionnaire (GHQ-12), were investigated employing multiple regression, adjusting for grade and sex. Sleep duration and amount of PA were classified as being adequate or not, according to the duration and amount recommended by the National Sleep Foundation and World Health Organization, respectively. As a result, the interaction between sleep duration and amount of PA and their main effects were statistically significant. GHQ-12 score was significantly better in adolescents with either adequate sleep or adequate PA, not both, than those with neither adequate sleep nor adequate PA. The score, however, seemed no further improved in those with both adequate sleep and PA. The present study suggests that effects of sleep and PA on mental health need to be studied with consideration to their interaction.
尽管睡眠时长和身体活动（PA）对青少年心理健康的影响已得到证实，但它们之间的相互作用尚未得到研究。本横断面研究首先考察了它们对青少年焦虑/抑郁的这种交互作用。共研究了 983 名 12-17 岁的日本学生，使用自我报告问卷。采用多元回归，根据国家睡眠基金会和世界卫生组织推荐的时长和量，将睡眠时长和 PA 量分为充足或不充足，并调整了年级和性别。结果显示，睡眠时长和 PA 量之间的相互作用及其主要影响具有统计学意义。与既没有充足睡眠也没有充足 PA 的青少年相比，无论是睡眠充足还是 PA 充足的青少年的 GHQ-12 评分都明显更好，而不是两者都充足的青少年。然而，那些同时有充足睡眠和 PA 的青少年的评分似乎没有进一步提高。本研究表明，需要考虑到它们的相互作用来研究睡眠和 PA 对心理健康的影响。
