Muscle ContractionMuscle, SkeletalMusclesMuscle Fibers, SkeletalIsometric ContractionRana temporariaElectric StimulationMuscle ProteinsRana pipiensMuscle, SmoothCalciumMuscle FatigueAnuraRanidaeTroponin CTroponinMyosinsMuscle Fibers, Fast-TwitchMyofibrilsRabbitsMuscle Fibers, Slow-TwitchTropomyosinMyocardial ContractionRana esculentaRana catesbeianaMuscle DevelopmentMuscle, Smooth, VascularMuscle RelaxationTime FactorsDantroleneMembrane PotentialsElectromyographyHindlimbSarcoplasmic ReticulumTetracaineRegional Blood FlowSarcomeresMitochondria, MuscleMotor NeuronsCaffeineAction PotentialsMuscle DenervationGuinea PigsUterine ContractionSatellite Cells, Skeletal MuscleMyocardiumRats, WistarMuscular AtrophyGallamine TriethiodideKineticsPotassiumNaphthalenesulfonatesVas DeferensCatsMuscular DiseasesFerretsModels, BiologicalArsenazo IIIDiaphragmQuadriceps MuscleSarcolemmaMuscle SpindlesElectrophysiologyAdenosine TriphosphateDogsNeuromuscular JunctionMuscle CellsMyocytes, Smooth MusclePapillary MusclesGlycogenActinsBiomechanical PhenomenaRats, Sprague-DawleyHypertonic SolutionsRyanodine Receptor Calcium Release ChannelMuscle, StriatedElectric ConductivityNeural ConductionMuscle WeaknessMyosin Heavy ChainsIon ChannelsDose-Response Relationship, DrugMyoblastsPhysical ExertionOculomotor MusclesVasoconstrictionCalcium ChannelsRespiratory MusclesNeck MusclesCells, CulturedIsotonic ContractionInsulinRNA, MessengerGallopamilMagnesiumTracheaExerciseAbdominal MusclesMyoblasts, SkeletalRigor Mortis