Muscle ContractionMuscle, SkeletalMuscle Fibers, SkeletalIsometric ContractionMusclesTroponin CTroponinMuscle ProteinsMyosinsMuscle FatigueTropomyosinCalciumRabbitsElectric StimulationMuscle, SmoothRegional Blood FlowMuscle, Smooth, VascularMuscle DevelopmentMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMitochondria, MuscleMuscle RelaxationMyocardial ContractionUterine ContractionElectromyographyMuscle DenervationSatellite Cells, Skeletal MuscleMyofibrilsTime FactorsMuscular AtrophyHindlimbMuscular DiseasesRats, Sprague-DawleyMuscle SpindlesRats, WistarGuinea PigsMyocytes, Smooth MuscleSarcomeresQuadriceps MuscleMuscle CellsMuscle, StriatedGlycogenTracheaActinsVasoconstrictionSarcoplasmic ReticulumPhysical ExertionBiomechanical PhenomenaMuscle WeaknessMotor NeuronsMyosin Heavy ChainsDiaphragmMyocardiumCells, CulturedMyoblastsPapillary MusclesGene FrequencyMyosin Light ChainsKineticsAdenosine TriphosphateDose-Response Relationship, DrugNeck MusclesModels, BiologicalOculomotor MusclesPotassium ChlorideIsotonic ContractionInsulinExerciseRNA, MessengerAcetylcholineNeuromuscular JunctionPhosphorylationRespiratory MusclesPeristalsisMolecular Sequence DataCaffeineAbdominal MusclesSignal TransductionGlucoseRyanodine Receptor Calcium Release ChannelSarcolemmaMyoblasts, SkeletalOxygen ConsumptionPsoas MusclesMice, Inbred C57BLPhysical Conditioning, AnimalPhysical EnduranceMuscular Dystrophy, AnimalCatsMembrane PotentialsActomyosinPhosphocreatineTorqueDogsMuscle TonusEnergy MetabolismFacial MusclesGastrointestinal MotilityMyoD ProteinMyostatin