OxygenOxygen ConsumptionHeart RatePhysical EnduranceDose-Response Relationship, DrugExerciseExercise TestPhysical ExertionTime FactorsBlood PressurePhysical FitnessRunningCross-Over StudiesRegional Blood FlowHemodynamicsReactive Oxygen SpeciesRats, Sprague-DawleyAnaerobic ThresholdBicyclingDogsPhysical Education and TrainingDouble-Blind MethodMaximal Voluntary VentilationExercise TolerancePulmonary Gas ExchangeSports MedicineRats, WistarBlood Flow VelocityMuscle, SkeletalRabbitsCalciumKineticsErgometryCells, CulturedAthletic PerformanceLactic AcidLiverCardiovascular Physiological PhenomenaEnergy MetabolismAltitudeSportsPulmonary VentilationOxygen Inhalation TherapyRestPhysical Conditioning, AnimalSinglet OxygenWork Capacity EvaluationCardiac OutputLactatesBody CompositionAerobiosisAnoxiaGlycogenAdaptation, PhysiologicalRespirationRespiratory Function TestsDecompressionRespiratory Physiological PhenomenaOxidation-ReductionPlasma VolumeMuscle FatigueCarbon DioxideBlood GlucoseAnthropometryExercise TherapyBody Temperature RegulationBody TemperatureMitochondria, MuscleLegOxygen IsotopesBlood Gas AnalysisErythrocyte VolumeBasal MetabolismAnalysis of VarianceAgingFatsDietary CarbohydratesHeat Stress DisordersBody WeightFatty Acids, NonesterifiedReference ValuesCitrate (si)-SynthaseCalorimetry, IndirectSpirometryGlycerolGlucoseHyperbaric OxygenationSoccerMuscle StrengthStroke VolumePartial PressureQuadriceps MuscleMusclesHeartAdipose TissueWalkingMotor ActivityBody Mass IndexEpinephrineInsulin