Exercise TestExercise ToleranceExerciseRisk AssessmentExercise TherapyPhysical ExertionOxygen ConsumptionPrognosisPredictive Value of TestsElectrocardiographyRisk FactorsHeart RatePhysical EnduranceProspective StudiesDeath, Sudden, CardiacAnaerobic ThresholdFollow-Up StudiesTime FactorsMyocardial InfarctionPhysical FitnessBiological MarkersTreatment OutcomeAsthma, Exercise-InducedCoronary DiseaseROC CurveAngina PectorisChest PainTroponin TBicyclingStroke VolumePulmonary Gas ExchangeHeart FailureSeverity of Illness IndexMuscle, SkeletalSurvival AnalysisNatriuretic Peptide, BrainElectrocardiography, AmbulatoryRetrospective StudiesCohort StudiesProportional Hazards ModelsMultivariate AnalysisEchocardiography, StressMyocardial IschemiaCoronary Artery DiseaseDyspneaSensitivity and SpecificityReproducibility of ResultsLactic AcidErgometryBlood PressureCoronary AngiographyEchocardiographyArrhythmias, CardiacAngina, UnstableRestKaplan-Meier EstimateTomography, Emission-Computed, Single-PhotonTroponin IRespiratory Function TestsVentricular Dysfunction, LeftSportsHemodynamicsDefibrillators, ImplantableSurvival RateRunningHeart DiseasesRiskAnalysis of VarianceTachycardia, VentricularChi-Square DistributionCardiovascular DiseasesVentricular Function, LeftAge FactorsDipyridamoleChronic DiseaseAdrenergic beta-AntagonistsRespirationOxygenHeartCase-Control StudiesSyncopeDouble-Blind MethodCardiovascular Physiological PhenomenaPhysical Education and TrainingAcute DiseaseWalkingForced Expiratory VolumeThallium RadioisotopesAcute Coronary SyndromeRegression AnalysisDiagnostic Techniques, CardiovascularMyocardial Perfusion ImagingReference ValuesBrugada SyndromePulmonary EmbolismSex FactorsHeart Function TestsBreathing ExercisesTroponinCardiac Output