Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai, 200241, China.
College of Physical Education and Health, East China Normal University, Shanghai, 200241, China.
BMC Public Health. 2020 Nov 12;20(1):1695. doi: 10.1186/s12889-020-09819-7.
Mental disorders among adolescents have become a worldwide public health problem. This study aimed to estimate the best combination of exercise time and screen time to promote the mental health of Chinese adolescents.
Participants included 7200 Chinese adolescents aged 13-18 years from six regions of China. Screen and exercise time data were collected via a self-rated questionnaire. Psychological symptoms (e.g., often feeling depressed, school-weary) were evaluated with the "Multidimensional Sub-health Questionnaire of Adolescents". Chi-squared tests and logistic regression analysis were conducted to investigate the differences in and correlations among screen time, exercise time, and psychological symptoms.
The overall detection rate of psychological symptoms among Chinese adolescents was 21.4% (22.1% for boys and 20.6% for girls). Psychological symptom detection rates were lowest among adolescents with 1-2 h/d of screen time (19.5%) and those with 30-60 min/d of exercise time (17.3%). Screen time > 2 h/d (OR = 1.38, P < 0.001) and exercise time < 30 min/d (OR = 1.62, P < 0.001) were positively correlated with psychological symptoms.
Screen and exercise time are associated with psychological symptoms in Chinese adolescents. A combination of 1-2 h/d of screen time and 30-60 min/d of exercise time is provided as a reference for better mental health.
青少年精神障碍已成为全球公共卫生问题。本研究旨在评估运动时间和屏幕时间的最佳组合，以促进中国青少年的心理健康。
参与者包括来自中国六个地区的 7200 名 13-18 岁的中国青少年。通过自我评估问卷收集屏幕时间和运动时间数据。使用“青少年多维亚健康问卷”评估心理症状（例如，经常感到沮丧、厌倦学校）。采用卡方检验和 logistic 回归分析，探讨屏幕时间、运动时间和心理症状之间的差异和相关性。
中国青少年心理症状的总检出率为 21.4%（男生为 22.1%，女生为 20.6%）。屏幕时间为 1-2 小时/天和运动时间为 30-60 分钟/天的青少年心理症状检出率最低（分别为 19.5%和 17.3%）。屏幕时间>2 小时/天（OR=1.38，P<0.001）和运动时间<30 分钟/天（OR=1.62，P<0.001）与心理症状呈正相关。
屏幕时间和运动时间与中国青少年的心理症状相关。建议每天使用 1-2 小时的屏幕时间和 30-60 分钟的运动时间，以促进更好的心理健康。
