【摘 要】
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1. Background rnIn the United States, children are not meeting daily recommendations for 60min of moderate-to-vigorous activity.1 Because children spend a large
【机 构】
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Department of Exercise and Nutrition Sciences, Milken Institute School of Public Health, The George
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1. Background rnIn the United States, children are not meeting daily recommendations for 60min of moderate-to-vigorous activity.1 Because children spend a large portion of their days in school, it has been further recommended that children accumulate 30 min of their physical activity (PA) during school hours.2 Our previous research has demonstrated with objective measures that only 8％-9％ of elementary school children meet this goal, with an average accumulation of 18 min/day.3,4 This finding is of conc given the numerous benefits that PA has not only on health outcomes,5-8 but also on academic achievement.
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