Physical ProcessesModels, TheoreticalModels, BiologicalComputer SimulationPhysical FitnessMotor ActivityPhysical Therapy ModalitiesExercisePhysical ExaminationPhysical Therapy SpecialtyPhysical Education and TrainingPhysical ExertionQuestionnairesPhysical Chromosome MappingSedentary LifestyleCross-Sectional StudiesQuality of LifeHealth StatusPhysical TherapistsHealth BehaviorActivities of Daily LivingRecreationWalkingLife StylePhysical and Rehabilitation MedicinePhysical EnduranceExercise TherapySportsAccelerometryEnvironment DesignRisk FactorsBody Mass IndexObesityTime FactorsProspective StudiesDisability EvaluationUnited StatesLongitudinal StudiesActigraphySocioeconomic FactorsMental HealthSex FactorsSchoolsPhysical Conditioning, AnimalHealth SurveysFollow-Up StudiesPhysical Therapy Department, HospitalDisabled PersonsResidence CharacteristicsSelf ReportHealth Status IndicatorsEnergy MetabolismAge FactorsMonitoring, AmbulatoryCohort StudiesMuscle StrengthTreatment OutcomeDietLogistic ModelsRegression Analysis