Muscle ContractionMuscle, SkeletalMusclesMuscle Fibers, SkeletalMuscle ProteinsIsometric ContractionMuscle, SmoothMuscle FatigueTroponin CTroponinMuscle, Smooth, VascularMyosinsMuscle DevelopmentTropomyosinRabbitsCalciumElectric StimulationMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMitochondria, MuscleRegional Blood FlowMuscle DenervationMuscle RelaxationMyocytes, Smooth MuscleMuscle SpindlesMuscle, StriatedElectromyographyNeck MusclesOculomotor MusclesSatellite Cells, Skeletal MuscleMuscle WeaknessMuscular AtrophyQuadriceps MusclePapillary MusclesMuscle CellsRespiratory MusclesMyofibrilsMuscular DiseasesAbdominal MusclesHindlimbFacial MusclesMyocardial ContractionTime FactorsMasticatory MusclesMasseter MuscleUterine ContractionIntercostal MusclesGlycogenMyosin Heavy ChainsRats, Sprague-DawleyRats, WistarPsoas MusclesCells, CulturedActinsSarcomeresDiaphragmBiomechanical PhenomenaMotor NeuronsMyoblastsPhysical ExertionGuinea PigsPectoralis MusclesTracheaNeuromuscular JunctionMyocardiumSarcoplasmic ReticulumRNA, MessengerMuscular Dystrophy, AnimalExerciseKineticsInsulinAdenosine TriphosphateVasoconstrictionSignal TransductionMyoblasts, SkeletalModels, BiologicalPhosphorylationDose-Response Relationship, DrugMyoD ProteinMyostatinGlucosePhysical EnduranceSarcolemmaRegenerationMice, Inbred mdxOxygen ConsumptionAcetylcholineLegPotassium ChlorideTemporal MuscleMice, Inbred C57BLTorquePhosphocreatineCaffeineMolecular Sequence DataMembrane PotentialsDogsCatsEnergy MetabolismAnura