Exercise TestPhysical ExertionExercise TherapyExercise ToleranceExerciseOxygen ConsumptionPhysical Conditioning, AnimalHeart RatePhysical EnduranceRunningMuscle, SkeletalPhysical FitnessAnaerobic ThresholdAsthma, Exercise-InducedWalkingPulmonary Gas ExchangeElectrocardiographyRestAngina PectorisIntermittent ClaudicationLactic AcidHemodynamicsTime FactorsBlood PressureBicyclingCardiovascular Physiological PhenomenaCoronary DiseaseRespirationCardiac OutputLegMotor ActivityErgometryRegional Blood FlowAnalysis of VarianceDyspneaAdaptation, PhysiologicalOxygenRespiratory Function TestsGlycogenEnergy MetabolismHeart FailureHeartCoronary CirculationLactatesDouble-Blind MethodStroke VolumeMyocardial IschemiaPhysical Education and TrainingSportsPulmonary VentilationCarbon DioxideCross-Over StudiesEchocardiography, StressHeat ExhaustionPredictive Value of TestsResistance TrainingGaitHyperventilationFollow-Up StudiesAdrenergic beta-AntagonistsGait Disorders, NeurologicEchocardiographyBody WeightDogsProspective StudiesHeart Function TestsTreatment OutcomeForced Expiratory VolumeMuscle FatigueBreathing ExercisesMuscle Stretching ExercisesHorsesCitrate (si)-SynthaseRecovery of FunctionRespiratory Physiological PhenomenaThallium RadioisotopesPropranololWeight-BearingMuscle ContractionElectrocardiography, AmbulatoryBlood GlucoseDipyridamoleChronic DiseaseVentricular Function, LeftNitroglycerinHindlimbMuscle StrengthMetabolic EquivalentBed RestVasodilator AgentsBlood Gas AnalysisRespiratory MechanicsReference ValuesAgingCoronary AngiographyTomography, Emission-Computed, Single-PhotonPrognosisLocomotionExercise Movement TechniquesEpinephrine