Heart InjuriesChagas CardiomyopathyMyocardial Reperfusion InjuryHeart FailureMyocardiumHeartWounds and InjuriesChronic DiseaseHeart RateCardiac Output, LowBrain InjuriesAthletic InjuriesSpinal Cord InjuriesReperfusion InjuryHeart DiseasesHeart TransplantationExercise ToleranceHemodynamicsExercise TestAdrenergic beta-AntagonistsHeart Defects, CongenitalNatriuretic Peptide, BrainStroke VolumeInjury Severity ScoreLeg InjuriesPropanolaminesLung InjuryVentricular Dysfunction, LeftOxygen ConsumptionCardiomyopathy, DilatedVentricular Function, LeftCarbazolesTime FactorsHeart Function TestsEye InjuriesHeart Failure, SystolicFetal HeartAcute Lung InjuryDisease Models, AnimalNeck InjuriesProspective StudiesCardiotonic Agents