Muscle Fibers, Slow-TwitchMusclesMuscle Fibers, SkeletalMuscle Fibers, Fast-TwitchHypertrophyMuscle ContractionMuscle, SkeletalMuscle DenervationHypertrophy, Left VentricularMuscle ProteinsCardiomegalyBody WeightMotor NeuronsMuscle DevelopmentNeural ConductionMuscle, SmoothSarcoplasmic ReticulumElectric StimulationMyocardiumMyofibrilsRana temporariaTime FactorsNerve FibersCatsMuscle, Smooth, VascularIsometric ContractionRabbitsMyosin Heavy ChainsWeight LossWeight GainNeuromuscular JunctionMuscle FatigueCalcium-Transporting ATPasesCalciumDiaphragmSarcomeresMitochondria, MuscleMuscle SpindlesMuscular AtrophyDietary FiberPsoas MusclesAnuraRana pipiensOrgan SizeMuscle RelaxationMuscular DiseasesOculomotor MusclesHypertrophy, Right VentricularMolecular WeightElectromyographyPapillary MusclesBirth WeightRats, Sprague-DawleyRats, WistarMuscle, StriatedAction PotentialsMuscle WeaknessMembrane PotentialsHindlimbMolecular Sequence DataQuadriceps MuscleMyocardial ContractionMasseter MuscleMotor EndplateHeartMyocytes, Smooth MuscleSatellite Cells, Skeletal MuscleThoracicaMyosinsCells, CulturedRespiratory MusclesMyocytes, CardiacMuscular Dystrophy, AnimalBase SequenceBiomechanical PhenomenaNeck MusclesMuscle CellsHistocytochemistryMasticatory MusclesAbdominal MusclesCaffeineMineral FibersMice, Inbred mdxSnakesSarcolemmaIntercostal MusclesMicroscopy, ElectronRNA, MessengerHeart VentriclesMice, Inbred C57BLDisease Models, AnimalRanidaeKineticsPectoralis MusclesModels, BiologicalFacial MusclesRana esculentaAgingMice, TransgenicTubocurarine