OxygenOxygen ConsumptionReactive Oxygen SpeciesOxygen Inhalation TherapySinglet OxygenOxygen IsotopesHyperbaric OxygenationPartial PressureAnoxiaHydrogen PeroxideOxidation-ReductionOxidative StressOximetryAntioxidantsOxyhemoglobinsCarbon DioxideAerobiosisSuperoxide DismutaseHemoglobinsFree RadicalsFree Radical ScavengersMitochondriaCatalaseHyperoxiaNADPH OxidaseCell HypoxiaAnaerobiosisSuperoxidesBlood Gas AnalysisPolarographyTime FactorsLuminescent MeasurementsKineticsPulmonary Gas ExchangeEnergy MetabolismBlood SubstitutesRespirationBlood Gas Monitoring, TranscutaneousOxidantsCells, CulturedOxygen RadioisotopesTricuspid Valve InsufficiencyNitric OxideReactive Nitrogen SpeciesAcetylcysteineGlutathioneHydrogen-Ion ConcentrationModels, BiologicalExercise TestHemodynamicsElectron TransportApoptosisElectron Spin Resonance SpectroscopyHypoxia-Inducible Factor 1, alpha SubunitDiphosphoglyceric AcidsHydroxyl RadicalSignal TransductionGlucoseLactic AcidOndansetronLipid PeroxidationElectron Transport Complex IVIon-Selective ElectrodesRats, Sprague-DawleyCerebrovascular CirculationPhysical ExertionOxidoreductasesCarbon MonoxideCell SurvivalMembrane Potential, MitochondrialCyclic N-OxidesAirSpectroscopy, Near-InfraredProstaglandins DCardiac OutputHeliumExerciseDose-Response Relationship, DrugSpectrophotometryMyocardiumAltitudeRegional Blood FlowOnium CompoundsHypoxia-Inducible Factor 1LactatesHemeLungPolyphloretin PhosphateNitrous OxideIronBlood PressureAscorbic AcidExercise ToleranceCell DeathMuscle, SkeletalWaterBrainLightAdenosine Triphosphate2,3-Diphosphoglycerate