Yang Jie, Wang Hai, Luo Lin
College of Exercise and Health, Shandong Sport University, Rizhao, China.
Guizhou Provincial Academy of Education, Guiyang, China.
Front Psychol. 2023 Feb 16;14:1002839. doi: 10.3389/fpsyg.2023.1002839. eCollection 2023.
To examine how well Chinese adolescents meet the physical exercise time and screen time recommendations in the Physical Activity Guidelines for Chinese Residents (2021), and the relationship between adolescents' physical exercise time, screen time and their academic performance.
Daily physical exercise time, screen time and academic performance were collected from Grade 8 adolescents ( = 9,449). Academic performance included standardized scores on Chinese, Math and English tests and responses to the School Life Experience Scale.
Meeting the physical activity time and screen time in the Physical Activity Guidelines for Chinese Residents was associated with adolescents' academic performance. Specifically, having at least 60 min of physical exercise per day was associated with adolescents' school life experiences compared to adolescents who did not meet the physical exercise time and screen time in the Chinese Residents' Physical Activity Guidelines. Less than 2 h of cumulative screen time per day was associated with adolescent mathematics test scores, English test scores and school life experiences. Meeting both physical exercise time and screen time to be recommended had more significant effects on adolescents' mathematics, Chinese, English and school life experiences. Meeting both the physical exercise time and screen time recommendations in the Physical Activity Guidelines for Chinese Residents was more significantly associated with boys' mathematics test scores, Chinese test scores and School life experience. Meeting both the physical exercise time and screen time requirements in the Physical Activity Guidelines for Chinese Residents had a more significant effect on School life experience for girls.
Physical exercise participation of at least 60 min per day and/or less than 2 h of cumulative screen time per day were both associated with adolescent academic performance. Stakeholders should actively promote adolescents to follow the Physical Activity Guidelines for Chinese Residents (2021).
探讨中国青少年在《中国居民身体活动指南（2021）》中身体锻炼时间和屏幕使用时间建议的达标情况，以及青少年身体锻炼时间、屏幕使用时间与学业成绩之间的关系。
收集了9449名八年级青少年的每日身体锻炼时间、屏幕使用时间和学业成绩。学业成绩包括语文、数学和英语测试的标准化分数以及对学校生活体验量表的回答。
符合《中国居民身体活动指南》中的身体活动时间和屏幕使用时间与青少年的学业成绩相关。具体而言，与未达到《中国居民身体活动指南》中身体锻炼时间和屏幕使用时间建议的青少年相比，每天至少进行60分钟的体育锻炼与青少年的学校生活体验相关。每天累计屏幕使用时间少于2小时与青少年的数学测试成绩、英语测试成绩和学校生活体验相关。同时符合身体锻炼时间和屏幕使用时间建议对青少年的数学、语文、英语和学校生活体验有更显著的影响。符合《中国居民身体活动指南》中身体锻炼时间和屏幕使用时间建议与男孩的数学测试成绩、语文测试成绩和学校生活体验的相关性更强。符合《中国居民身体活动指南》中身体锻炼时间和屏幕使用时间要求对女孩的学校生活体验影响更大。
每天至少进行60分钟的体育锻炼和/或每天累计屏幕使用时间少于2小时均与青少年的学业成绩相关。利益相关者应积极促进青少年遵循《中国居民身体活动指南（2021）》。
