Changes in Physical Activity in the School, Afterschool, and Evening Periods During the Transition From Elementary to Middle School.


BACKGROUND We examined longitudinal changes in children's physical activity during the school day, afterschool, and evening across fifth, sixth, and seventh grades. METHODS The analytical sample included children who had valid accelerometer data in fifth grade and at least one other time-point, and provided complete sociodemographic information (N = 768… (More)
DOI: 10.1111/josh.12523


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