Motor NeuronsMuscle Fibers, SkeletalMusclesMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMuscle, SkeletalMuscle ContractionMuscle ProteinsMuscle DevelopmentMuscle, SmoothEvoked Potentials, MotorMotor CortexMuscle DenervationNerve FibersMuscle, Smooth, VascularMotor ActivityMyofibrilsMuscle FatigueRana temporariaIsometric ContractionMyosin Heavy ChainsMitochondria, MuscleNeuromuscular JunctionElectromyographyPsoas MusclesMuscle SpindlesDietary FiberElectric StimulationOculomotor MusclesCalciumSarcomeresTime FactorsMuscular AtrophyMuscle RelaxationMolecular Motor ProteinsMuscular DiseasesMuscle, StriatedRana pipiensRabbitsMuscle WeaknessNeck MusclesThoracicaDiaphragmMyocytes, Smooth MuscleHindlimbMasseter MuscleAnuraMembrane Potentialsalpha 1-AntitrypsinMuscular Dystrophy, AnimalSatellite Cells, Skeletal MuscleBiomechanical PhenomenaAction PotentialsQuadriceps MuscleMyosinsRespiratory MusclesMineral FibersMasticatory MusclesMice, Inbred mdxKineticsPapillary MusclesAbdominal MusclesMovementIntercostal MusclesFacial MusclesMuscle CellsHistocytochemistryReceptors, Adrenergic, alphaRats, Sprague-DawleyModels, BiologicalRats, WistarMotor EndplateMicroscopy, ElectronNeural ConductionImmunohistochemistryCells, CulturedSarcoplasmic ReticulumPectoralis MusclesCotton FiberSarcolemmaMice, Inbred C57BLAxonsMolecular Sequence DataActinsHypoxia-Inducible Factor 1, alpha SubunitDystrophinRegenerationProtein IsoformsCatsElectrophysiologyMotor Skills DisordersNADH Tetrazolium ReductaseMyoblastsGene Expression RegulationRanidaeRana esculentaSkeletal Muscle MyosinsBase SequenceSignal TransductionReceptors, Cholinergic