To the Editor We read with interest the article by Easterlin et al,¹ which demonstrated an association between team sports participation in adolescence with long-term mental health outcomes among individuals exposed to adverse childhood experiences. We noted that the main variables of this study, including mental health outcomes (depression, anxiety, and depressive symptoms), adverse childhood experiences, and team sport participation, were recorded without any details surrounding chronology. Mental health outcomes were retrospectively self-reported in wave 4 (phrased as “having ever received a diagnosis of anxiety/depression”), while team sport participation was reported in wave 1 (phrased as current participation or intention to participate).

致编辑我们感兴趣地阅读了Easterlin等人的文章¹，该文章证明了青少年时期参加团队运动与长期处于不良心理状态的个体之间的长期心理健康状况之间存在关联。我们注意到，该研究的主要变量，包括心理健康结局（抑郁，焦虑和抑郁症状），不良的童年经历和团队运动参与度，均未记录在时间顺序上。在第4浪中，心理健康结局进行了回顾性自我报告（表述为“曾经接受过焦虑/抑郁症的诊断”），而在第1浪中报告了团队运动的参与情况（表述为当前的参与或意图参加）。