Anaerobic ThresholdExercise TestOxygen ConsumptionExercise ToleranceErgometryPulmonary Gas ExchangeExerciseHeart RateLactic AcidPhysical ExertionRunningSensory ThresholdsPhysical EndurancePhysical FitnessRespirationHeart FailureCarbon DioxideExercise TherapyPulmonary VentilationRespiratory Function TestsPhysical Education and TrainingSportsLactatesOxygenStroke VolumeWalkingTime FactorsCardiac OutputDifferential ThresholdAnalysis of VarianceAuditory ThresholdPredictive Value of TestsPain ThresholdHemodynamicsChronic DiseaseMuscle, SkeletalTreatment OutcomeElectrocardiographyCase-Control StudiesProspective StudiesBlood Pressure