Tara N Cohen, Falisha F Kanji, Jennifer Zamudio, Daniel Shouhed, Bruce L Gewertz, Harry C Sax
Why can't we improve turnover time? A systematic review
World journal of surgery
physical activity guidelines americans recommend adolescents engaging 60 min physical activity pa every day students spend least 30 min active school however schools rarely provide much pa time students paper describes planned analyses study evaluating relationships pa measured average daily minutes moderate vigorous physical activity mvpa educational outcomes standardized test scores classroom grades crosssectionally 4 th grade longitudinally 4 th 5 th grade investigations moderators student schoollevel mediators potential dosage average mvpa thresholds outlined ensure high level variability student pa health empowers program implemented random sample half participating schools intervention designed affect students pa behaviors health outcomes cardiorespiratory fitness body mass index utilizing accelerometer data students participating schools relationship pa health academic outcomes academic achievement test scores reading lexile grades attendance tardiness evaluated total 4968 grade 4 students across 40 schools 20 receiving intervention participated 75 participation rate cohort tracked grade 4 grade 5 addition implementation process fidelity data gathered given school closures response covid19 prematurely terminated spring 5 th grade data collection modifications original analysis plan discussed throughout