Muscle, SkeletalMuscle ContractionMusclesMuscle Fibers, SkeletalMuscle ProteinsIsometric ContractionRana temporariaRana pipiensMuscle, SmoothAnuraMuscle FatigueRanidaeCalciumTroponin CTroponinMyosinsMuscle DevelopmentMuscle, Smooth, VascularRabbitsElectric StimulationTropomyosinRana esculentaMuscle Fibers, Fast-TwitchRana catesbeianaMyofibrilsMuscle Fibers, Slow-TwitchMitochondria, MuscleMuscle DenervationMuscle RelaxationRegional Blood FlowTetracaineSarcomeresSarcoplasmic ReticulumSatellite Cells, Skeletal MuscleMembrane PotentialsMuscular AtrophyCaffeineTime FactorsMyocytes, Smooth MuscleMuscular DiseasesMuscle, StriatedMuscle SpindlesMuscle CellsQuadriceps MuscleKineticsElectromyographyHindlimbNaphthalenesulfonatesMuscle WeaknessOculomotor MusclesNeck MusclesPotassiumPapillary MusclesRespiratory MusclesModels, BiologicalGlycogenSarcolemmaMyoblastsActinsAbdominal MusclesMyosin Heavy ChainsArsenazo IIIAdenosine TriphosphateElectrophysiologyRyanodine Receptor Calcium Release ChannelBiomechanical PhenomenaRats, Sprague-DawleyRats, WistarAction PotentialsElectric ConductivityHypertonic SolutionsCells, CulturedIon ChannelsMyocardial ContractionPhysical ExertionRNA, MessengerDiaphragmInsulinFacial MusclesMyocardiumMasseter MuscleDantroleneMyoblasts, SkeletalNeuromuscular JunctionMasticatory MusclesPsoas MusclesCalcium ChannelsExerciseMuscular Dystrophy, AnimalMyoD ProteinIntercostal MusclesMyostatinGlucoseMotor NeuronsUterine ContractionEnergy MetabolismRigor MortisRegenerationMagnesiumMice, Inbred mdx