Muscle, SkeletalMuscle Fibers, SkeletalMusclesRana temporariaMuscle ContractionMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMuscle ProteinsMuscle DevelopmentMuscle, SmoothMuscle DenervationMyofibrilsMuscle FatigueIsometric ContractionMitochondria, MuscleRana pipiensMuscle, Smooth, VascularMyosin Heavy ChainsCalciumNerve FibersPsoas MusclesSarcomeresMuscular AtrophyElectric StimulationRabbitsSatellite Cells, Skeletal MuscleSarcoplasmic ReticulumMuscular DiseasesHindlimbSciatic NerveElectromyographyMice, Inbred mdxMuscle RelaxationRanidaeAnuraMuscular Dystrophy, AnimalNeuromuscular JunctionRana esculentaMembrane PotentialsSarcolemmaMuscle SpindlesTime FactorsMyosinsQuadriceps MuscleMotor NeuronsOculomotor MusclesCaffeineDiaphragmMyoblastsMuscle WeaknessDystrophinPeripheral NervesMuscle, StriatedRegenerationRats, WistarTroponin CMyocytes, Smooth MuscleKineticsNeck MusclesBiomechanical PhenomenaGlycogenMuscle CellsAction PotentialsNerve RegenerationTroponinRats, Sprague-DawleyRespiratory MusclesNADH Tetrazolium ReductaseCells, CulturedElectrophysiologyHistocytochemistryMasseter MuscleModels, BiologicalPapillary MusclesRNA, MessengerTetracaineOptic NerveAbdominal MusclesNaphthalenesulfonatesTibial NerveMuscular Dystrophy, DuchenneTendonsLegMice, Inbred C57BLMotor EndplateMyoD ProteinArsenazo IIIMyostatinMasticatory MusclesIsotonic ContractionRyanodine Receptor Calcium Release ChannelPhysical ExertionHypertrophyMicroscopy, ElectronActinsAdenosine TriphosphateFacial MusclesProtein IsoformsAgingNerve Endings