Correlation of daytime outdoor light exposure and moderate to vigorous physical activities with sleep quality among primary school students
10.16835/j.cnki.1000-9817.2026076
- VernacularTitle:日间户外光照和中高强度体力活动与小学生睡眠质量的关联
- Author:
WANG Ziyi, DUAN Zhihong, MAIHELIYAKEZI Tuersunniyazi, PENG Hui, ZHU Yanhong, SHI Huijing
1
Author Information
1. Department of Maternal, Child and Adolescent Health, School of Public Health, Fudan University, Shanghai 200032, China
- Publication Type:Journal Article
- Keywords:
Light;
Motor activity;
Sleep;
Regression analysis;
Students
- From:
Chinese Journal of School Health
2026;47(3):351-354
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the independent and interaction effects of daytime outdoor light exposure and moderate to vigorous physical activity (MVPA) duration on sleep quality of primary school students, so as to provide scientific evidence for interventions on children s sleep health.
Methods:From April to June 2024, a total of 444 students from grades 3 and 4 in 2 primary schools in Jiading District, Shanghai were selected using stratified random cluster sampling method for continuous 7 day monitoring. Wearable devices "Clouclip" were used to monitor daytime outdoor activity time (represented by time with light intensity ≥ 1 000 lx ), and accelerometers were used to monitor MVPA time and sleep quality related indicators. Multiple linear regression was used to analyze the associations of daytime outdoor activity and MVPA with sleep quality.
Results:Both daytime outdoor light exposure and MVPA duration(longer actual sleep duration per night,longer time in bed,fewer awakening and shorter post sleep awakening shic) were independently associated with multiple sleep indicators( β =0.52, 0.46, -0.83, -2.19, all P <0.05), with no significant interaction between the associations ( P >0.05). After controlling for MVPA, more daytime outdoor light exposure was significantly and independently associated with longer actual sleep time ( β =0.50, 95% CI =0.21-0.79, P <0.05). After controlling for light exposure, longer MVPA duration was independently associated with shorter post-sleep awakening duration ( β=-4.15, 95% CI = -6.33 to -1.96, P <0.05).
Conclusion:Increased daytime outdoor activity and MVPA are both associated with better sleep quality in primary school students.
