Objective:This cross-sectional study examined environmental correlates of sedentary behavior(SB)and physical activity(PA)in preschool chil-dren in the urban area of Tianjin,China.Methods:Data were collected from the Physical Activity and Health in Tianjin Chinese Children study,involving healthy children 3-6 years old and their families.In all children(n=980),leisure-time SB(LTSB)and leisure-time PA(LTPA)were reported in min/day by parents.In a sub-group(n=134),overall sedentary time,light PA,and mo derate-to-vigorous PA(MVP A)were objectively measured using ActiGraph accelero-metry(≥3 days,≥10 h/day).Environmental correlates were collected using a questionnaire that included home and neighborhood characteristics(e.g.,traffic safety,presence of physical activity facilities)and children's behaviors.Potential correlates were identified using linear regression analysis.Results:Multiple linear regression analysis showed that"having grandparents as primary caregivers"(βs and 95％confidence intervals(95％CIs)for overall sedentary time:29.7(2.1-57.2);LTSB(ln):0.19(0.11-0.28))and"having a television(for LTSB(ln):0.13(0.00-0.25))or com-puter(for LTSB(ln):0.13(0.03-0.23))in the child's bedroom"were both associated with higher SB.Furthermore,"having grandparents as pri-mary caregivers"was associated with less MVPA(β(95％CI):-7.6(-14.1 to-1.2)),and"active commuting to school by walking"correlated with more MVPA(β(95％CI):9.8(2.2-17.4)).The path model showed that"more neighborhood PA facilities close to home"was indirectly related to higher LTPA(ln),which was partly mediated by"outdoor play"(path coefficients(95％CI):0.005(0.002-0.008))and"going to these facilities more often"(path coefficients(95％CI):0.013(0.008-0.018)).Traffic safety was not a correlate.Conclusion:Family structure and media exposure in the home maybe important factors in shaping preschoolers'PA patterns.Built environmen-tal correlates could indirectly influence preschoolers'LTPA through parental help with engaging in active behaviors.

Congchao Lu;Tong Shen;Guowei Huang;Eva Corpeleijn

School of Public Health,Tianjin Medical University,Tianjin 300070,China;Department of Epidemiology,University Medical Center Groningen,University of Groningen,Groningen,9700 RB,the Netherlands;Tianjin Key Laboratory of Environment,Nutrition and Public Health,Center for International Collaborative Research on Environment,Nutrition and Public Health,Tianjin 300070,China;Tianjin University Kindergarten,Tianjin University,Tianjin 300072,China;Department of Nutrition and Food Science,School of Public Health,Tianjin Medical University,Tianjin 300070,China

运动与健康科学（英文）

[1]Congchao Lu;Tong Shen;Guowei Huang;Eva Corpeleijn-.Environmental correlates of sedentary behaviors and physical activity in Chinese preschool children:A cross-sectional study)[J].运动与健康科学（英文）,2022(05):620-629

preschool,LTSB,derate,accelero,preschoolers

Environmental,correlates,sedentary,behaviors,physical,activity,Chinese,children,cross,sectional,study,Objective,This,examined,environmental,urban,area,Tianjin,China,Methods,Data,were,collected,from,Physical,Activity,Health,Children,involving,healthy,years,old,their,families,In,leisure,LTPA,reported,by,sub,group,overall,light,vigorous,objectively,measured,using,ActiGraph,metry,days,questionnaire,that,included,home,neighborhood,characteristics,traffic,safety,presence,facilities,Potential,identified,linear,regression,analysis,Results,Multiple,showed,having,grandparents,primary,caregivers,confidence,intervals,CIs,ln,television,puter,bedroom,both,associated,higher,Furthermore,was,less,MVPA,active,commuting,walking,correlated,path,model,close,indirectly,which,partly,mediated,outdoor,play,coefficients,going,these,often,Traffic,not,Conclusion,Family,structure,exposure,maybe,important,factors,shaping,patterns,Built,could,influence,through,parental,help,engaging

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