Background Adolescents with disrupted rest-activity rhythms (RAR) including shorter sleep duration, later sleep timing and low physical activity levels have higher risk for mental and behavioral problems. However, it remains unclear whether the same associations can be observed for within-subject changes in RAR.

中文翻译：

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随着年龄的增长，青少年休息活动节律的变化：ABCD 研究中与大脑变化和行为的关联

背景休息活动节律（RAR）紊乱（包括睡眠时间较短、睡眠时间较晚和体力活动水平较低）的青少年出现精神和行为问题的风险较高。然而，目前尚不清楚是否可以在 RAR 的受试者内变化中观察到相同的关联。