Exercise TestExercise ToleranceOxygen ConsumptionExerciseCardiopulmonary BypassExercise TherapyAnaerobic ThresholdPulmonary Gas ExchangeCardiopulmonary ResuscitationPhysical ExertionPulmonary VentilationHeart RatePhysical EnduranceHeart FailureRespiratory Function TestsDyspneaPhysical FitnessRespirationStroke VolumeRestTime FactorsHemodynamicsElectrocardiographyCarbon DioxideWalkingHeart Failure, SystolicMuscle, SkeletalHeart Function TestsPredictive Value of TestsOxygenTreatment OutcomeBlood PressureHeart ArrestBicyclingCardiac OutputPrognosisProspective StudiesAsthma, Exercise-InducedSpirometryChronic DiseaseHypertension, PulmonaryVentricular Dysfunction, LeftLactic AcidVentricular Function, LeftFollow-Up StudiesAnalysis of VarianceForced Expiratory VolumeHeart Defects, CongenitalEchocardiographyHeartPulmonary Disease, Chronic ObstructiveHeart TransplantationRunningSeverity of Illness IndexErgometryCardiac Output, LowNatriuretic Peptide, BrainCyanosisPostoperative PeriodAngina PectorisPreoperative CareCardiovascular Physiological PhenomenaSportsReference ValuesCardiomyopathy, DilatedDouble-Blind MethodRetrospective StudiesPropanolaminesHeart DiseasesBreathing ExercisesLungPhysical Education and TrainingResistance TrainingEchocardiography, DopplerMuscle Stretching ExercisesMyocardial IschemiaCase-Control StudiesSystoleCoronary DiseaseStatistics, NonparametricRisk FactorsLung DiseasesRegional Blood FlowQuality of LifeRisk AssessmentReproducibility of ResultsLegCardiac Surgical ProceduresROC CurveDiastoleMuscle FatigueLactatesMuscle StrengthCross-Over StudiesCarbazolesChi-Square DistributionHeart Arrest, InducedAdaptation, PhysiologicalBiological MarkersBlood Gas Analysis