Physical EnduranceDose-Response Relationship, DrugHeart RateTime FactorsBlood PressureCross-Over StudiesRegional Blood FlowRats, Sprague-DawleyRunningDogsHemodynamicsPhysical Conditioning, AnimalDouble-Blind MethodRats, WistarBlood Flow VelocityExercisePhysical Education and TrainingMuscle, SkeletalCalciumRabbitsBicyclingAthletesKineticsOxygen ConsumptionSportsLiverCells, CulturedAthletic PerformancePhysical FitnessMuscle FatiguePhysical ExertionCitrate (si)-SynthaseExercise TestMuscle StrengthTrack and FieldAnaerobic ThresholdExercise ToleranceAdaptation, PhysiologicalExercise TherapyResistance TrainingSwimmingRespiratory MusclesLactic AcidWeight LiftingMuscle ContractionMitochondria, MuscleGlycogenIsometric ContractionPerformance-Enhancing SubstancesEnergy MetabolismBreathing ExercisesMusculoskeletal Physiological PhenomenaQuadriceps MuscleSports MedicineMaximal Voluntary VentilationJoggingRestBackMuscle Fibers, SkeletalAltitudeBody CompositionPhysical Conditioning, HumanWalkingCardiovascular Physiological PhenomenaPulmonary Gas ExchangeFatigueBody WeightMuscle Fibers, Fast-TwitchRespirationElectromyographyElbowLegAgingMaximum Tolerated Dose3-Hydroxyacyl CoA DehydrogenasesPulmonary Disease, Chronic ObstructivePulmonary VentilationDietary CarbohydratesAnalysis of VarianceLactatesMusclesCardiomegaly, Exercise-InducedBlood GlucoseMotor ActivityInspiratory CapacityDyspneaDiaphragmHand StrengthOxygenSkiingMuscle Fibers, Slow-TwitchWork of BreathingBiomechanical PhenomenaFatty Acids, NonesterifiedOxidation-ReductionMalpighiaceaeTreatment OutcomeMuscle WeaknessAthletic TapeVital Capacity