Correlation between physical exercise, screen time and mental sub-health among Chinese adolescents

Abstract

Objective To understand the relationships between video time, exercise time and the mental sub-health of Chinese adolescents, and to assist the development of Chinese adolescents’ mental health.

Methods In this study, 16 545 adolescents aged 13-22 years in six administrative regions of China were surveyed using an adolescent sub-health multi-dimensional assessment questionnaire (MSQA), and daily physical exercise time, video screen time and other indicators were recorded. Binary Logistic regression analysis was used to understand adolescents’ mental sub-health and the correlation between video time and exercise time.

Results Detection rate of mental sub-health status in adolescents with video time ≤2 h/d was lower than that of adolescents with video time >2 h/d (19.1%, 22.1%), and the detection rate of adolescents with exercise time ≤60 min/d (22.1%, 17.7%) was higher than that of adolescents with exercise time >60 min/d. These differences were statistically significant ( χ ² = 14.47, 6.97, P < 0.05). Binary Logistic regression analysis showed that the risk of mental sub-health status for Chinese adolescents whose screen time was more than 2 h/d was 1.20 times that of those with screen time ≤2 h/d, and the difference was statistically significant ( P < 0.01). The risk of mental sub-health for students whose exercise time was > 60 min/d was 0.86 times that of students who exercised ≤ 60 min/d, and the difference was statistically significant ( P<0.05).

Conclusion Screen time >2 h/d and exercise time <60 min/d were negative factors leading to mental sub-health symptoms in Chinese adolescents. It is proposed to jointly promote the healthy adolescent development through health education, as well as positive family and social environment.

Abstract

【摘要】 目的 了解中国青少年视屏时间、锻炼时间与心理亚健康之间的关系, 为中国青少年心理健康发展提供帮助。 方法 2015—2017 年, 采用分层整群随机抽样法选取中国六大行政区的 16 545 名 13~22 岁青少年, 采用青少年亚健康多 维评定问卷 (Multidimensional Sub-health Questionnaire of Adolescents, MSQA) 中的心理问卷对该人群进行心理亚健康调査, 同时调査体育锻炼时间、视屏时间等指标, 通过二元 Logistic 回归分析了解视屏时间、锻炼时间与心理亚健康之间的关联。 结果 视屏时间 ≤2 h/d的青少年心理亚健康状态检出率 (19.1%) 较 >2 h/d青少年 (22.1%)低, 锻炼时间 >60 min/d青少 年心理亚健康检出率 (17.7%) 较 ≤60 min/d 青少年 (20.0%) 低, 差异有统计学意义 (χ ² 值分别为 14.47, 6.97, P 值均 <0.05)。二兀 Logistic 回归分析显示, 视屏时间 >2 h/d 与中国青少年心理亚健康状态的发生呈正相关 ( OR = 1.20, P<0.01), 锻炼时间 >60 min/d 与中国青少年心理亚健康状态的发生呈负相关 ( OR = 0.86, P<0.05)。 结论 中国青少年视屏时间长、 锻炼时间短是导致心理亚健康状态的负面影响因素。建议从青少年的健康教育、家庭引导、社会环境等多方面联合共同促 进青少年身心健康成长。