title: 2008 Physical Activity Guidelines for Americans: an opportunity for athletic trainers.
authors.forename: Jennifer M
authors.initials: JM
authors.lastname: Hootman
mesh_terms: D001265:Athletic Injuries / Q000517:prevention & control; D006801:Humans; D009043:Motor Activity; D017410:Practice Guidelines as Topic / Q000592:standards*; D013178:Sports Medicine / Q000592:standards*; D014481:United States