title: A need for more experimental studies of physical activity during childhood.
authors.forename: Roy J
authors.initials: RJ
authors.lastname: Shephard
mesh_terms: D000328:Adult; D002648:Child; D015444:Exercise / Q000502:physiology* / Q000523:psychology; D005544:Forecasting; D015438:Health Behavior; D006801:Humans; D007221:Industry; D007557:Israel; D007899:Leisure Activities / Q000523:psychology*; D008297:Male; D008875:Middle Aged; D012574:Schools; D012959:Socioeconomic Factors; D013177:Sports / Q000502:physiology / Q000523:psychology*; D011795:Surveys and Questionnaires; D000078329:Workforce