[Analysis on prevalence of physical activity time <1 hour and related factors in students aged 9-22 years in China, 2014].
Objective:To explore the prevalence of physical activity time <1 hour and related factors in students aged 9-22 years in China.Methods:A total of 220 159 students (110 039 boys and 110 120 girls) aged 9-22 years who completed the questionnaire of physical activity and lifestyle behaviors were selected from " 2014 National Physical Fitness and Health Surveillance" for the current study. All the participants were divided into 2 groups, i.e. physical activity time <1 hour and physical activity time ≥1 hour according the suggestion of Central Government, stratified by age and gender.χ(2) tests were used to compare the difference in the prevalence of physical activity time <1 hour between boys and girls in every age groups. Univariate and multivariate log-binomial regression models were used to explore the factors that influenced the prevalence of physical activity time <1 hour.Results:The boy's prevalence of physical activity time <1 hour was 73.3%, with the lowest (57.0%) in 9-years-old group, and highest (82.5%) in 18 years old group. The girl's prevalence of physical activity time <1 hour was 79.1%, with the lowest (60.1%) in 9-years-old group, and highest (89.8%) in 21 years old group. Overall, The prevalence of physical activity time <1 hour was significantly higher in girls than in boys (P<0.001), and the prevalence were significantly higher in girls than in boys in all the age groups (P<0.001), and it was observed that the prevalence of physical activity <1 hour increased with age in both boys and girls (P<0.001). Multivariate log-binomial regression model found that being girl (PR=1.05, 95%CI: 1.05-1.06), parents' disliking children to participate physical activity (PR=1.08, 95% CI: 1.07-1.09), heavy homework (PR=1.13, 95% CI: 1.12-1.14), long homework time (PR=1.08, 95%CI: 1.07-1.08), long time spending on electronic screen watching (PR=1.01, 95%CI: 1.00-1.01) and disliking physical class (PR=1.11, 95%CI: 1.10-1.12) could be the risk factors for physical activity time <1 hour, however, living in rural area (PR=0.99, 95% CI: 0.98-0.99) and no supporting from parents for children to participate physical activity (PR=0.99, 95%CI: 1.98-1.00) could be the protective factors, but no consistent association with the time of TV watching was observed (P=0.226).Conclusions:The prevalence of physical activity time <1 hour was high in students aged 9-22 years in China. Female, parents; disliking children to participate physical activity, heavy homework, long homework time, long electronic screen watching time and disliking physical class might be the risk factors.
School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing 100191, China.
Z H
ZH
Wang
Y H
YH
Dong
Y
Y
Song
Z P
ZP
Yang
J
J
Ma
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002681:China; D015444:Exercise; D005260:Female; D006306:Health Surveys; D006801:Humans; D008019:Life Style; D008297:Male; D010290:Parents; D010809:Physical Fitness; D015995:Prevalence; D012307:Risk Factors; D012737:Sex Factors; D013334:Students / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D055815:Young Adult
Academic burden; Physical activity; Physical fitness; Screening time; Students