Anaerobic ThresholdExercise TestOxygen ConsumptionExercise ToleranceErgometryPulmonary Gas ExchangeExerciseHeart RateLactic AcidPhysical ExertionSensory ThresholdsPhysical EnduranceRunningPhysical FitnessRespirationHeart FailureCarbon DioxideExercise TherapyPulmonary VentilationRespiratory Function TestsPhysical Education and TrainingSportsOxygenLactatesStroke VolumeTime FactorsCardiac OutputDifferential ThresholdAnalysis of VarianceWalkingAuditory ThresholdPredictive Value of TestsHemodynamicsPain ThresholdMuscle, SkeletalElectrocardiographyTreatment OutcomeChronic DiseaseCase-Control StudiesProspective StudiesBlood Pressure