Physical activity levels among children attending after-school programs

attending after-school programs, 2) examine PA levels in specific after-school sessions and activity contexts, and 3) evaluate after-school PA differences in groups defined by sex and weight status.Methods: One hundred forty-seven students in grades 3–6 (mean age: 10.1 T 0.7, 54.4 % male, 16.5 % overweight (OW), 22.8 % at-risk for OW) from seven after-school programs in the midwestern United States wore Actigraph GT1M accelerometers for the duration of their attendance to the program. PA was objectively assessed on six occasions during an academic year (three fall and three spring). Stored activity counts were uploaded to a customized data-reduction program t