Association of sedentary time, physical activity with overweight and obesity in children

ZENG Xia; HUANG Ji-tian; CHEN Ya-jun

doi:10.11852/zgetbjzz2022-0370

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Chinese Journal of Child Health Care ›› 2022, Vol. 30 ›› Issue (7) : 720-724. DOI: 10.11852/zgetbjzz2022-0370

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Association of sedentary time, physical activity with overweight and obesity in children

ZENG Xia^*, HUANG Ji-tian, CHEN Ya-jun

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Abstract

Objective To explore the combined associations of after-school sedentary time(ST) and daily physical activity(PA) with children's overweight and obesity, so as to provide basis for formulating prevention and control strategies for children's overweight and obesity from the perspective of PA patterns. Methods Using stratified cluster random sampling method, 3 936 children aged 7 to 12 years in Guangzhou were recruited from March to June 2017. Children's PA and ST were assessed using a reliable and valid questionnaire. Overweight and obesity were determined according to the standards established by the Working Group on Obesity in China. After-school ST ≥2 h/d was regarded as high ST, and daily participation in moderate to high-intensity PA ≥60 min/d was regarded as high PA. Participants were finally cross-classified into four groups. Results The overall overweight and obesity rate of children aged 7 to 12 in Guangzhou was 21.5%. The prevalence rates of overweight and obesity in low ST/high PA group, low ST/low PA group, high ST/high PA group and high ST/low PA group were 18.9%,17.8%,23.1% and 22.3%, respectively. Compared with children in the low ST/ high PA group, children in the high ST/high PA group(OR=1.286, 95%CI:1.078 - 1.724), and high ST/low PA group(OR=1.219, 95%CI:1.059 - 1.641) had a higher risk for overweight and obesity. Conclusion PA and ST have a combined association with children's overweight and obesity, suggesting that intervention efforts should focus on ST reduction in addition to promoting PA.

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sedentary time / physical activity / children / overweight and obesity

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ZENG Xia, HUANG Ji-tian, CHEN Ya-jun. Association of sedentary time, physical activity with overweight and obesity in children[J]. Chinese Journal of Child Health Care. 2022, 30(7): 720-724 https://doi.org/10.11852/zgetbjzz2022-0370

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