Muscle Fibers, Fast-TwitchMusclesMuscle Fibers, Slow-TwitchMuscle Fibers, SkeletalMuscle ContractionMuscle, SkeletalMuscle DenervationMuscle ProteinsSarcoplasmic ReticulumCalcium-Transporting ATPasesRabbitsMuscle DevelopmentCalciumMuscle, SmoothRana temporariaNerve FibersMyofibrilsIsometric ContractionMuscle, Smooth, VascularElectric StimulationNeuromuscular JunctionMuscle FatigueMyosin Heavy ChainsDiaphragmMitochondria, MuscleSarcomeresMuscle SpindlesPsoas MusclesAnuraRana pipiensMotor NeuronsTime FactorsElectromyographyDietary FiberMuscle RelaxationOculomotor MusclesMuscular AtrophyMuscular DiseasesPapillary MusclesMembrane PotentialsAction PotentialsMuscle, StriatedMuscle WeaknessMotor EndplateHindlimbBiomechanical PhenomenaQuadriceps MuscleThoracicaRespiratory MusclesMasseter MuscleNeck MusclesMyosinsMuscular Dystrophy, AnimalMyocytes, Smooth MuscleSatellite Cells, Skeletal MuscleMasticatory MusclesAbdominal MusclesMineral FibersCaffeineIntercostal MusclesSnakesHistocytochemistryMice, Inbred mdxRanidaeSarcolemmaKineticsCatsRana esculentaMuscle CellsPectoralis MusclesRats, WistarModels, BiologicalNeural ConductionFacial MusclesTubocurarineMicroscopy, ElectronCotton FiberElectrophysiologyPurkinje FibersDystrophinRegenerationMyocardial ContractionRats, Sprague-DawleyNADH Tetrazolium ReductaseCells, CulturedTendonsReceptors, CholinergicMyoblastsSkeletal Muscle MyosinsMyocardiumStress, MechanicalActinsNeuromuscular Blocking AgentsGlycogenTetanyPotassiumTorqueAxonsIsotonic ContractionNeuromuscular Nondepolarizing Agents