Exercise TolerancePulmonary Disease, Chronic ObstructiveDyspneaExercise TestPhysical ExertionOxygen ConsumptionExercise TherapyHeart RateExerciseDouble-Blind MethodPhysical EnduranceDrug ToleranceLung Diseases, ObstructiveRespiratory Function TestsBreathing ExercisesForced Expiratory VolumeImmune ToleranceHeart FailureRespiratory MusclesSpirometryXamoterolPulmonary Gas ExchangeMuscle, SkeletalAngina PectorisVital CapacityInspiratory CapacityQuality of LifeCross-Over StudiesBronchodilator AgentsTreatment OutcomeAnaerobic ThresholdWalkingTime FactorsRestOxygen Inhalation TherapyHemodynamicsRespirationLungPulmonary VentilationStroke VolumeBlood PressureChronic DiseaseSeverity of Illness IndexElectrocardiographyGlucose Tolerance TestCardiac OutputOxygenPropanolaminesHeart Function TestsProspective StudiesIpratropiumLactic AcidMuscle FatigueBronchitisAdrenergic beta-AntagonistsCounterpulsationMetoprololBicyclingAnalysis of VarianceFollow-Up StudiesSingle-Blind MethodMuscle StrengthAsthma, Exercise-InducedHypertension, PulmonaryLegEchocardiographyAdministration, InhalationPulmonary EmphysemaPhysical FitnessRespiratory MechanicsFatigueTransplantation ToleranceVentricular Function, LeftPhysical Conditioning, AnimalDiastoleCoronary DiseaseVentricular Dysfunction, LeftAdaptation, PhysiologicalMaximal Voluntary VentilationPropranololLung Volume MeasurementsQuestionnairesIsosorbide DinitrateNeurocirculatory AstheniaHeartCarbon DioxideResistance TrainingEnergy MetabolismVasodilator AgentsEbstein AnomalyAdministration, OralEchocardiography, DopplerClinical Trials as TopicNitroglycerinPhysical Education and TrainingMetabolic EquivalentRegional Blood FlowBlood GlucoseScopolamine DerivativesGlycogen Storage Disease Type V