Metabolic EquivalentMotor ActivityExercisePublic FacilitiesExercise TestLeisure ActivitiesPhysical FitnessRecreationExercise ToleranceEnergy MetabolismSedentary LifestyleWalkingAccelerometryMonitoring, AmbulatoryBody Mass IndexQuestionnairesOxygen ConsumptionPhysical ExertionExercise TherapyLife StyleProspective StudiesRisk FactorsHeart RateFollow-Up StudiesObesityProportional Hazards ModelsCross-Sectional StudiesTime FactorsElectrocardiographyReproducibility of ResultsCardiovascular DiseasesHealth BehaviorRegression AnalysisPredictive Value of TestsCohort StudiesActivities of Daily LivingUnited StatesMultivariate AnalysisRisk AssessmentSex FactorsBlood PressureAge FactorsLongitudinal StudiesIncidenceConcept Formation