Ao Li, Siteng Chen, Stuart F Quan, Graciela E Silva, Charlotte Ackerman, Linda S Powers, Janet M Roveda, Michelle M Perfect
Sleep patterns and sleep deprivation recorded by actigraphy in 4th-grade and 5th-grade students
Sleep medicine
examine school socioeconomic status ses relation school physical activityrelated practices childrens physical activity crosssectional design used study study set 97 elementary schools 63 response rate two us regions children taking part study 172 aged 102 standard deviation sd 15 years 517 girls 692 white nonhispanic school physical education pe teachers principals responded 15 yesno questions school physical activitysupportive practices school ses low moderate high derived percent students eligible free reducedprice lunch childrens moderate vigorous physical activity mvpa school measured accelerometers school level analyses involved linear logistic regression childrens mvpa analyses used mixed effects regression lowses schools less likely pe teacher fewer physical activitysupportive pe practices highses schools p 05 practices related active travel school favorable lowses schools p 05 children attending highses schools 44 minutes per day mvpa school lowses schools finding statistically significant p 124 findings suggest low moderateses elementary schools need pe teachers order reduce disparities school physical activity opportunities pe time needs supplemented classroom teachers staff meet guidelines