title: Operational definitions for year 2000 objectives: Priority Area 1, Physical Activity and Fitness.
authors.forename: Y
authors.initials: Y
authors.lastname: Chong
authors.forename: R J
authors.initials: RJ
authors.lastname: Klein
authors.forename: C
authors.initials: C
authors.lastname: Plepys
authors.forename: R
authors.initials: R
authors.lastname: Troiano
mesh_terms: D003627:Data Interpretation, Statistical; D015444:Exercise; D005544:Forecasting; D006292:Health Priorities / Q000639:trends; D006306:Health Surveys; D006801:Humans; D010809:Physical Fitness; D014481:United States