Muscle, SkeletalMusclesMuscle Fibers, SkeletalMuscle ProteinsMuscle, SmoothMuscle ContractionMuscle DevelopmentMuscle, Smooth, VascularMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMitochondria, MuscleMyocardiumMuscle DenervationMuscle FatiguePapillary MusclesHeartMyocytes, Smooth MuscleMyocytes, CardiacMyofibrilsSatellite Cells, Skeletal MuscleMuscle CellsOculomotor MusclesMuscle, StriatedNeck MusclesMuscle RelaxationMuscular AtrophyCalciumRabbitsMuscle WeaknessMuscle SpindlesMuscular DiseasesRespiratory MusclesQuadriceps MuscleIsometric ContractionSarcomeresMyocardial ContractionAbdominal MusclesMyosin Heavy ChainsTime FactorsCells, CulturedMasseter MuscleFacial MusclesMasticatory MusclesIntercostal MusclesSarcoplasmic ReticulumElectromyographyHindlimbRats, Sprague-DawleyRNA, MessengerGlycogenElectric StimulationSarcolemmaTroponinMyoblastsRats, WistarPectoralis MusclesCardiac OutputMuscular Dystrophy, AnimalMice, Inbred mdxDystrophinActinsPsoas MusclesTroponin CRyanodine Receptor Calcium Release ChannelRegenerationDiaphragmKineticsMyostatinCreatine KinaseMyoD ProteinInsulinMolecular Sequence DataMyoblasts, SkeletalMice, Inbred C57BLTropomyosinGene Expression RegulationPhysical ExertionSignal TransductionBiomechanical PhenomenaOxygen ConsumptionDogsHeart VentriclesChickensGlucoseExerciseMembrane PotentialsAgingTemporal MuscleNeuromuscular JunctionPhosphorylationAdenosine TriphosphateHypertrophyMice, TransgenicOrgan SpecificityCell DifferentiationTroponin IMuscular Dystrophy, DuchenneDesminMyosinsArrhythmias, Cardiac