学龄儿童学习日、周末久坐积累模式与体质健康关系

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中图分类号：G804.2 文献标志码：A 文章编号：1006-7116（2026）01-0144-09

Abstract： To explore the characteristics of sedentary accumulation pattrn on weekdays and weekends in preschool childrenand their relationships with physical health.A total of 550 primary school students from Changsha were selected，andusingaccelerometers tomeasureandcalculatedifferenttypes ofsedentaryboutsandbreakofdierent intensities. According to the requirements of the “National Students’ Physical Health Standards （Revised in 2014）”， the physical health ofchildren was assessed.Abinary Logistic regresion and segment regression analysis were examined therelationships of accumulation patem on weekdays and weekends，and children’sphysical health. Results： （1）The sedentary accumulation pattrn on weekdays and weekends for preschool children both exhibited a fragmented characteristic.On weekdays，longer sedentary periods and MVPA break were more common， while on weekends，shorter sedentary periodsandLPA break were more frequent.（2）On weekdaysand for preschool children， the total sedentary time （O R=1.0111 ， 95% CI： 1.007-1.015， P<0.001 ）and sedentary bou ⩾ 30minutes OR=1.016 ， 95% CI：1.008-1.024， P<0.001 ）wereidentifiedasrisk factors forphysical fitness，while ⩾5min MVPA OR=0.962 ， 95% CI： 0.941-0.983， P<0.001 ） was a protective factor. On weekends， only total sedentary time （ OR=1.004 95% CI： 1.001-1.007， P=0.007 ） was a risk factor for physical health. （3）Non-linear relationship between ⩾5min MVPAbreakand physical fitnessonweekdays P=0.005 ）.Whenthe MVPA was ⩽36.6 minutes per day， each aditional minute per day decreased the rate of good-excellnt physical health by 5.6% 0 OR=0.944 ， 95%CI ：0.921-0.967， P=0.005 ）.However，whenthe≥5minMVPA >36.6 minutes per day，each additional minute per day did not significantly affect the rate of good-excellent physical health （ OR=1.032 0 95% CI： 0.981-1.085， P=0.221 ）.Conclusion： On weekdays，except for limiting total sedentary time，sedentary bouts should be restricted to no more than 30 minutes， while encouraging sustained ≥5min MVPA break to reach a daily total of 36.6 minutes，and on weekends， the focus should be on limiting total sedentary time.

Keywords： sedentary behavior;sedentary accumulation pattern；preschool children；physical health

国内外大量流行病学研究证据表明久坐（sedentarybehavior，SED）时间过长是儿童青少年体质健康的风险因素-2]。（剩余16570字）