Exercise ToleranceExercise TestExercise TherapyExercisePhysical ExertionDrug ToleranceOxygen ConsumptionDyspneaPhysical EnduranceImmune ToleranceBreathing ExercisesHeart RatePulmonary Disease, Chronic ObstructiveMuscle, SkeletalLung Diseases, ObstructiveHeart FailureRespiratory Function TestsPulmonary Gas ExchangeXamoterolAngina PectorisGlucose Tolerance TestDouble-Blind MethodForced Expiratory VolumeAnaerobic ThresholdRespiratory MusclesTime FactorsCross-Over StudiesQuality of LifeCounterpulsationTreatment OutcomeHemodynamicsWalkingRestBlood PressureRespirationCardiac OutputChronic DiseaseInspiratory CapacityHeart Function TestsMuscle StrengthStroke VolumeTransplantation ToleranceVital CapacityLactic AcidAdaptation, PhysiologicalOxygenSpirometryIsosorbide DinitrateOxygen Inhalation TherapyNeurocirculatory AstheniaElectrocardiographyMuscle FatigueEbstein AnomalyPropanolaminesLegPulmonary VentilationMetoprololAnalysis of VarianceProspective StudiesLungBronchitisFollow-Up StudiesBicyclingGlycogen Storage Disease Type VAdrenergic beta-AntagonistsVentricular Function, LeftEchocardiographyPhysical FitnessSingle-Blind MethodVentricular Dysfunction, LeftCardiac Output, LowDiastolePhysical Conditioning, AnimalBronchodilator AgentsEnergy MetabolismBlood GlucoseSeverity of Illness IndexRegional Blood FlowNitroglycerinResistance TrainingHypertension, PulmonaryFatigueIpratropiumHeartRunningBisoprololAdministration, OralCoronary DiseaseMuscle Stretching ExercisesNafronylEchocardiography, DopplerRespiratory MechanicsVasodilator AgentsSelf ToleranceArmClinical Trials as TopicLung Volume MeasurementsCardiovascular AgentsCardiac VolumePulmonary Emphysema