Muscle Fibers, SkeletalMusclesMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMuscle, SkeletalMuscle ContractionMuscle ProteinsMuscle DevelopmentMuscle, SmoothMuscle DenervationNerve FibersMuscle, Smooth, VascularMyofibrilsMuscle FatigueRana temporariaIsometric ContractionMyosin Heavy ChainsMitochondria, MuscleDietary FiberPsoas MusclesMuscle SpindlesSarcomeresOculomotor MusclesNeuromuscular JunctionMuscular AtrophyCalciumMuscle RelaxationMuscular DiseasesMuscle, StriatedRana pipiensTime FactorsElectric StimulationThoracicaMuscle WeaknessNeck MusclesRabbitsMyocytes, Smooth MuscleDiaphragmMasseter MuscleMotor NeuronsAnuraSatellite Cells, Skeletal MuscleElectromyographyMuscular Dystrophy, AnimalQuadriceps MuscleMineral FibersHindlimbRespiratory MusclesMembrane PotentialsPapillary MusclesMice, Inbred mdxMasticatory MusclesAbdominal MusclesMyosinsIntercostal MusclesMuscle CellsBiomechanical PhenomenaFacial MusclesHistocytochemistryMotor EndplateCotton FiberPectoralis MusclesSarcoplasmic ReticulumAction PotentialsSarcolemmaMicroscopy, ElectronDystrophinRegenerationNADH Tetrazolium ReductaseCells, CulturedRats, WistarMyoblastsRana esculentaRanidaeSkeletal Muscle MyosinsCaffeineImmunohistochemistryModels, BiologicalActinsTendonsGlycogenCrustaceaMuscular DystrophiesPurkinje FibersCatsStress FibersRats, Sprague-DawleyKineticsReceptors, CholinergicAgingStress, MechanicalHypertrophyNeural ConductionNerve Fibers, MyelinatedTemporal MuscleProtein IsoformsMyositisIsotonic ContractionElectrophysiologyRNA, Messenger