Muscle Fibers, SkeletalMyofibrilsMyocardiumMusclesMyocardial ContractionHeartCalciumMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMuscle, SkeletalRabbitsMuscle ContractionMuscle ProteinsMuscle DevelopmentMyocytes, CardiacMuscle, SmoothSarcomeresPapillary MusclesMuscle DenervationNerve FibersMuscle, Smooth, VascularMyosin Heavy ChainsIsometric ContractionMuscle FatigueRana temporariaMitochondria, MuscleMyosinsCardiac OutputTime FactorsTroponin CPsoas MusclesMuscular DiseasesSarcoplasmic ReticulumDietary FiberSarcolemmaTroponinMuscle SpindlesNeuromuscular JunctionElectric StimulationOculomotor MusclesMuscle RelaxationHeart VentriclesMembrane PotentialsAnuraMuscular AtrophyRana pipiensMuscle, StriatedDystrophinArrhythmias, CardiacMuscular Dystrophy, AnimalAction PotentialsMice, Inbred mdxMuscle CellsCells, CulturedDiaphragmMicroscopy, ElectronMyocytes, Smooth MuscleTroponin IMuscle WeaknessCardiac Surgical ProceduresThoracicaRats, Sprague-DawleyRats, WistarCardiomegalyNeck MusclesPurkinje FibersActinsCaffeineCardiac MyosinsDeath, Sudden, CardiacMotor NeuronsKineticsMasseter MuscleBiomechanical PhenomenaSatellite Cells, Skeletal MuscleDogsRyanodine Receptor Calcium Release ChannelElectromyographyTropomyosinQuadriceps MuscleMineral FibersHindlimbHistocytochemistryRespiratory MusclesConnectinRegenerationCreatine KinaseRanidaeModels, BiologicalMasticatory MusclesRNA, MessengerAbdominal MusclesCatsIntercostal MusclesCardiomyopathiesProtein IsoformsElectrophysiologyMice, Inbred C57BLChickensMolecular Sequence Data