Muscle Fibers, Slow-TwitchMusclesMuscle Fibers, SkeletalMuscle Fibers, Fast-TwitchHypertrophyMuscle ContractionMuscle, SkeletalMuscle DenervationHypertrophy, Left VentricularMotor NeuronsMuscle ProteinsCardiomegalyElectric StimulationMuscle DevelopmentNeural ConductionMuscle, SmoothNerve FibersSarcoplasmic ReticulumMyocardiumCatsMyofibrilsRana temporariaTime FactorsMuscle, Smooth, VascularIsometric ContractionNeuromuscular JunctionMyosin Heavy ChainsRabbitsMuscle FatigueCalcium-Transporting ATPasesDiaphragmCalciumMuscle SpindlesSarcomeresOculomotor MusclesMitochondria, MuscleMuscular AtrophyRana pipiensElectromyographyAnuraMuscle RelaxationPsoas MusclesDietary FiberMuscular DiseasesMotor EndplateRats, Sprague-DawleyAction PotentialsHypertrophy, Right VentricularPapillary MusclesHeartHindlimbRats, WistarAxonsMembrane PotentialsHistocytochemistryMuscle, StriatedMasseter MuscleMuscle WeaknessNeck MusclesOrgan SizeMyocardial ContractionMyocytes, Smooth MuscleQuadriceps MuscleCells, CulturedMyosinsMolecular Sequence DataSatellite Cells, Skeletal MuscleThoracicaMyocytes, CardiacBiomechanical PhenomenaRespiratory MusclesMuscular Dystrophy, AnimalMasticatory MusclesMicroscopy, ElectronMuscle CellsImmunohistochemistryBase SequenceDenervationAbdominal MusclesAdrenergic FibersAnimals, NewbornSnakesMineral FibersCaffeineMice, Inbred C57BLRNA, MessengerHeart VentriclesMice, Inbred mdxSarcolemmaMice, TransgenicIntercostal MusclesFacial MusclesAgingPectoralis MusclesElectrophysiologyDisease Models, AnimalSympathetic Nervous SystemRegenerationRanidaeNeurons, Afferent