Exercise ToleranceExercise TestOxygenExercise TherapyExerciseOxygen ConsumptionOximetryPhysical ExertionPhysical EnduranceHeart RateDyspneaDrug ToleranceOxygen Inhalation TherapyMuscle, SkeletalBreathing ExercisesPulmonary Gas ExchangeSpectroscopy, Near-InfraredImmune ToleranceRespiratory Function TestsRespirationTime FactorsPulmonary Disease, Chronic ObstructiveLung Diseases, ObstructiveHemodynamicsOxyhemoglobinsAnoxiaHeart FailureBlood PressureRestBlood Gas AnalysisPartial PressureAnaerobic ThresholdCardiac OutputCarbon DioxideDouble-Blind MethodForced Expiratory VolumeReactive Oxygen SpeciesCross-Over StudiesTreatment OutcomeLactic AcidBlood Gas Monitoring, TranscutaneousWalkingRespiratory MusclesProspective StudiesAltitudeHemoglobinsAngina PectorisBicyclingXamoterolQuality of LifeAdaptation, PhysiologicalVital CapacityGlucose Tolerance TestRegional Blood FlowLegPhysical FitnessAnalysis of VarianceStroke VolumeChronic DiseaseSpirometryMuscle StrengthElectrocardiographyPulmonary VentilationRespiratory MechanicsMuscle FatigueRunningLungResistance TrainingSingle-Blind MethodFollow-Up StudiesHeart Function TestsMuscle Stretching ExercisesEnergy MetabolismSeverity of Illness IndexCounterpulsationInspiratory CapacityMonitoring, PhysiologicHypertension, PulmonaryEbstein AnomalyHeartCardiac Output, LowEchocardiographyBlood GlucoseTransplantation TolerancePropanolaminesIsosorbide DinitrateVentricular Function, LeftMetoprololApneaAdrenergic beta-AntagonistsJugular VeinsMonitoring, IntraoperativeNeurocirculatory AstheniaPhysical Education and TrainingVasodilator AgentsAltitude SicknessCerebrovascular CirculationBronchodilator AgentsReproducibility of ResultsGlycogen Storage Disease Type V