Dose-Response Relationship, DrugHeart RateTime FactorsBlood PressureCross-Over StudiesRegional Blood FlowRats, Sprague-DawleyDogsHemodynamicsBlood Flow VelocityRats, WistarDouble-Blind MethodCalciumRabbitsKineticsCells, CulturedLiverOxygen ConsumptionExercise TestAnaerobic ThresholdExercisePhysical EndurancePhysical ExertionPhysical FitnessPulmonary Gas ExchangeBicyclingMaximum Tolerated DoseRunningExercise ToleranceMuscle, SkeletalOxygenLactic AcidPulmonary VentilationEnergy MetabolismPhysical Education and TrainingErgometryCarbon DioxideMuscle ContractionLikelihood FunctionsRespirationCardiac OutputModels, BiologicalMaximal Voluntary VentilationTemperatureHydrogen-Ion ConcentrationCardiovascular Physiological PhenomenaBiomechanical PhenomenaIsometric ContractionReproducibility of ResultsLegAdaptation, PhysiologicalLactatesAlgorithmsSpectroscopy, Near-InfraredRespiratory Function TestsAnalysis of VarianceMuscle FatigueVanadatesRestRespiratory Physiological PhenomenaBody WeightBody Temperature RegulationReference ValuesHeart FailureHeartAthletic PerformanceBody CompositionBody TemperatureTreatment OutcomeComputer SimulationWalkingAgingAltitudeArea Under CurveAerobiosisMusclesSportsStroke VolumeMuscle StrengthMyocardial ContractionBlood Gas AnalysisAnoxiaRegression AnalysisProspective StudiesCalorimetry, IndirectPhysical Conditioning, AnimalPhylogenyVanadiumRespiratory MechanicsSwimmingElectric StimulationMolecular Sequence DataSports MedicineAdministration, OralCardiovascular DeconditioningLod ScoreWeight LiftingBasal MetabolismHot TemperatureAcclimatization