Muscle FatigueMuscle, SkeletalFatigueMusclesMuscle Fibers, SkeletalMuscle ContractionMuscle ProteinsMuscle, SmoothCell HypoxiaMuscle DevelopmentIsometric ContractionElectromyographyMuscle, Smooth, VascularMyocardiumQuadriceps MuscleMuscle Fibers, Fast-TwitchRespiratory MusclesMuscle Fibers, Slow-TwitchAnoxiaFatigue Syndrome, ChronicHeartPhysical EnduranceMitochondria, MuscleAbdominal MusclesMental FatigueMyocytes, CardiacPapillary MusclesMuscle DenervationTime FactorsElectric StimulationCalciumMuscle WeaknessMuscle RelaxationMuscular DiseasesNeck MusclesExerciseMyofibrilsRabbitsPhysical ExertionSatellite Cells, Skeletal MuscleDiaphragmMyocardial ContractionMyocytes, Smooth MuscleMuscular AtrophyTorqueMuscle CellsSarcoplasmic ReticulumSarcomeresIntercostal MusclesOxygen ConsumptionBackMuscle StrengthGlycogenOculomotor MusclesMuscle, StriatedCells, CulturedOxygenMyosin Heavy ChainsRats, WistarRats, Sprague-DawleyMuscle SpindlesRNA, MessengerLactic AcidCardiac OutputBiomechanical PhenomenaSarcolemmaTroponinHindlimbPhosphocreatineTroponin CAdaptation, PhysiologicalRyanodine Receptor Calcium Release ChannelAdenosine TriphosphateEnergy MetabolismMyoblastsMasseter MuscleGene Expression RegulationDystrophinAgingExercise ToleranceMice, Inbred C57BLMice, Inbred mdxKineticsCreatine KinaseLegMotor NeuronsHeart VentriclesMuscular Dystrophy, AnimalActinsMolecular Sequence DataElbowModels, BiologicalFacial MusclesInsulinSignal TransductionHypoxia, BrainMasticatory MusclesExercise TestRegenerationTropomyosin