Association between 24 h activity behaviors and physical health among primary school students in Tianjin/
Objective To analyze the association of 24 h activity behaviors and physical health of primary school students,so as to provide a reference for promoting the physical health of children and adolescents.Methods From May to June,2023,by strati-fied random sampling method,583 primary school students aged 7-12 were selected from Tianjin for physical health examination.ActiGraph GT3X+was used to measure their 24 h activity behaviors for 7 d,and their mental health and 24 h activity behaviors were analyzed by gender and grade.LASSO regression was applied for assessing the impact of 24 h activity on their health.Results The compliance rate of seated forward bending(93.12％)were higher in boys than girls(91.86％),and the differences were statis-tically significant(x2=4.53,P＜0.05).Sleep time(β=0.06),light-intensity physical activity(LPA)time(β=0.11),and moder-ate to vigorous physical activity(MVP A)time(β=0.14)were positively correlated with physical fitness,whereas sedentary behav-ior(SB)time(β=-0.08)were negatively correlated with physical fitness,and MVPA time had a positive effect on physical health of children and adolescents,followed by LPA time;while sleep time also had a positive effect,and SB time had a negative effect(P＜0.05).Conclusions Primary school students are generally faced with low physical activity level and high SB time,and MVPA and LPA have a significant impact on physical health.Therefore,it is crucial to develop personalized and differentiated physical ac-tivity promotion policies and interventions for primary school students with different classmates and gender.
Motor activityBody constitutionRegression analysisStudents
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