Metabolic EquivalentMotor ActivityExercisePublic FacilitiesExercise TestLeisure ActivitiesPhysical FitnessRecreationExercise ToleranceEnergy MetabolismSedentary LifestyleWalkingAccelerometryMonitoring, AmbulatoryBody Mass IndexOxygen ConsumptionQuestionnairesPhysical ExertionExercise TherapyLife StyleProspective StudiesRisk FactorsHeart RateFollow-Up StudiesIntensive Care UnitsProportional Hazards ModelsTime FactorsObesityCross-Sectional StudiesElectrocardiographyCardiovascular DiseasesCohort StudiesHealth BehaviorReproducibility of ResultsRegression AnalysisPredictive Value of TestsActivities of Daily LivingMultivariate AnalysisUnited StatesRisk AssessmentSex FactorsAge FactorsBlood PressureLongitudinal StudiesIncidenceHospital Units