MusclesMuscle ProteinsMuscle, SmoothMuscle, SkeletalMuscle Fibers, SkeletalMuscle, Smooth, VascularMuscle DevelopmentMuscle ContractionMuscle FatigueMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchMyocytes, Smooth MuscleMitochondria, MuscleNeck MusclesOculomotor MusclesMuscle, StriatedMuscle SpindlesMuscle RelaxationRespiratory MusclesMuscle WeaknessPapillary MusclesAbdominal MusclesQuadriceps MuscleMuscle CellsMasseter MuscleFacial MusclesMasticatory MusclesIntercostal MusclesElectromyographyMuscular AtrophyIsometric ContractionSatellite Cells, Skeletal MusclePectoralis MusclesMuscular DiseasesPsoas MusclesMyofibrilsTemporal MuscleHindlimbRabbitsElectric StimulationCells, CulturedMyosin Heavy ChainsCalciumPharyngeal MusclesTime FactorsDiaphragmBiomechanical PhenomenaMotor NeuronsGlycogenNeuromuscular JunctionMuscular Dystrophy, AnimalMyoblastsRats, Sprague-DawleyRNA, MessengerMuscle CrampActinsRats, WistarRegenerationMice, Inbred mdxSarcomeresMyostatinMyoD ProteinLegPhysical ExertionMuscle Stretching ExercisesMyocardiumMuscle RigidityExerciseHypertrophyDystrophinPhysical EnduranceMyoblasts, SkeletalAortaSignal TransductionTendonsInsulinGene Expression RegulationHindlimb SuspensionKineticsMembrane PotentialsAgingCatsMice, Inbred C57BLThighMuscle NeoplasmsCreatine KinasePterygoid MusclesGuinea PigsOxygen ConsumptionMuscular DystrophiesSkeletal Muscle MyosinsAnuraTracheaImmunohistochemistryModels, BiologicalSarcoplasmic ReticulumMuscle Relaxants, CentralSarcolemmaCell Differentiation