Myocardial Reperfusion InjuryReperfusion InjuryMyocardial IschemiaOxidative StressMyocardiumMagnetic Resonance Imaging, CineExercise TestIschemiaMagnetic Resonance ImagingMyocardial ReperfusionReperfusionMyocytes, CardiacBrain IschemiaIschemic Preconditioning, MyocardialRats, Sprague-DawleyHeartCardiotonic AgentsMyocardial InfarctionRats, WistarDisease Models, AnimalReactive Oxygen SpeciesTime FactorsIschemic PreconditioningMitochondria, HeartAntioxidantsArrhythmias, CardiacMyocardial ContractionMalondialdehydeApoptosisElectrocardiographySuperoxide DismutaseMice, Inbred C57BLPerfusionElectrocardiography, AmbulatoryCoronary CirculationCreatine KinaseHydrogen PeroxideVentricular Function, LeftAmobarbitalHemodynamicsIschemic PostconditioningHeart Arrest, InducedLipid PeroxidationReceptor, Adenosine A3Warm IschemiaPeroxidaseCardiovascular AgentsCells, CulturedHeart VentriclesCardiac OutputProtective AgentsBiological MarkersGlutathioneRabbitsNeuroprotective AgentsCold IschemiaOxygenChest PainKidneyCoronary VesselsIschemic Attack, TransientOxidantsMice, KnockoutCatalaseNecrosisCoronary DiseaseCytoprotectionL-Lactate DehydrogenaseNitric OxideFree Radical ScavengersInfarction, Middle Cerebral ArteryRandom AllocationLiverDogsSignal TransductionAdenosine TriphosphateHeme Oxygenase-1Blotting, WesternHeart FailureConstrictionCardiac Surgical ProceduresOxidation-ReductionThiobarbituric Acid Reactive SubstancesSpinal Cord IschemiaModels, AnimalGlutathione PeroxidaseCell DeathDeath, Sudden, CardiacBlood PressureRNA, MessengerTreatment OutcomeFree RadicalsEnzyme InhibitorsTioproninCoronary AngiographyMitochondriaCaspase 3Neutrophil InfiltrationAspartate AminotransferasesHeart Rate