Muscle, SkeletalMusclesMuscle Fibers, Fast-TwitchMuscle Fibers, SkeletalMuscle Fibers, Slow-TwitchMuscle ContractionMuscle ProteinsMuscle DenervationMuscle DevelopmentSarcoplasmic ReticulumMuscle, SmoothRabbitsMuscle, Smooth, VascularCalcium-Transporting ATPasesCalciumMitochondria, MuscleMuscle FatigueMyofibrilsIsometric ContractionRana temporariaMuscular AtrophySatellite Cells, Skeletal MuscleElectric StimulationMyosin Heavy ChainsMuscular DiseasesNeuromuscular JunctionMuscle SpindlesOculomotor MusclesMuscle RelaxationDiaphragmNerve FibersMuscle, StriatedSarcomeresMuscle WeaknessQuadriceps MusclePsoas MusclesHindlimbTime FactorsMyocytes, Smooth MusclePapillary MusclesElectromyographyNeck MusclesRana pipiensMuscle CellsAnuraRespiratory MusclesMotor NeuronsMuscular Dystrophy, AnimalMasseter MuscleMyoblastsAbdominal MusclesMembrane PotentialsGlycogenMice, Inbred mdxMasticatory MusclesSarcolemmaIntercostal MusclesMyosinsRats, WistarRegenerationAction PotentialsKineticsBiomechanical PhenomenaFacial MusclesCells, CulturedMotor EndplateRats, Sprague-DawleyMyocardiumDystrophinPectoralis MusclesCaffeineRNA, MessengerMyostatinDietary FiberMyoD ProteinSkeletal Muscle MyosinsMyoblasts, SkeletalPhysical ExertionActinsExerciseModels, BiologicalHistocytochemistryRanidaeInsulinAgingMice, Inbred C57BLMicroscopy, ElectronAdenosine TriphosphateMuscular DystrophiesHindlimb SuspensionHypertrophyRana esculentaPhysical EnduranceThoracicaCatsOxygen ConsumptionTroponinReceptors, CholinergicElectrophysiologyCreatine Kinase