The challenge of promoting physical activity.
Armstrong
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Children's Health and Exercise Research Centre, School of Education, University of Exeter.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005060:Europe; D015444:Exercise; D005190:Family; D005260:Female; D006293:Health Promotion / Q000639:trends; D006801:Humans; D008297:Male; D010806:Physical Education and Training; D010809:Physical Fitness; D012574:Schools; D013177:Sports; D013997:Time Factors