Muscle, SkeletalMuscle ContractionMuscle Fibers, SkeletalIsometric ContractionMusclesTroponin CTroponinMuscle ProteinsMyosinsMuscle FatigueTropomyosinRabbitsCalciumElectric StimulationMuscle, SmoothRegional Blood FlowMuscle, Smooth, VascularMuscle DevelopmentMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMitochondria, MuscleMuscle RelaxationMyocardial ContractionUterine ContractionMuscle DenervationElectromyographySatellite Cells, Skeletal MuscleMyofibrilsMuscular AtrophyHindlimbMuscular DiseasesTime FactorsMuscle SpindlesMyocytes, Smooth MuscleRats, WistarRats, Sprague-DawleyMuscle, StriatedSarcomeresQuadriceps MuscleMuscle CellsGuinea PigsGlycogenActinsTracheaVasoconstrictionSarcoplasmic ReticulumPhysical ExertionMuscle WeaknessMyosin Heavy ChainsMyoblastsMyocardiumDiaphragmMyosin Light ChainsPapillary MusclesMotor NeuronsBiomechanical PhenomenaAdenosine TriphosphateNeck MusclesOculomotor MusclesPotassium ChlorideCells, CulturedIsotonic ContractionKineticsInsulinExerciseDose-Response Relationship, DrugPhosphorylationRespiratory MusclesRNA, MessengerAcetylcholineModels, BiologicalNeuromuscular JunctionAbdominal MusclesPeristalsisGlucoseSignal TransductionCaffeineMyoblasts, SkeletalSarcolemmaRyanodine Receptor Calcium Release ChannelPsoas MusclesPhysical Conditioning, AnimalOxygen ConsumptionMuscular Dystrophy, AnimalActomyosinPhysical EndurancePhosphocreatineDogsTorqueMuscle TonusFacial MusclesMolecular Sequence DataMyoD ProteinEnergy MetabolismMice, Inbred C57BLMyostatinGlucose Transporter Type 4CarbacholMembrane PotentialsGastrointestinal Motility