title: Physical activity in young people-assessment and methodological issues.
authors.forename: Jo
authors.initials: J
authors.lastname: Salmon
authors.forename: Anthony D
authors.initials: AD
authors.lastname: Okely
mesh_terms: D002648:Child; D015444:Exercise / Q000502:physiology*; D006801:Humans; D018670:Monitoring, Ambulatory; D010809:Physical Fitness / Q000502:physiology