Muscle, SkeletalMuscle ContractionMuscle Fibers, SkeletalMusclesIsometric ContractionMuscle ProteinsTroponin CMuscle FatigueMuscle, SmoothTroponinMyosinsCalciumRabbitsElectric StimulationTropomyosinMuscle DevelopmentMuscle Fibers, Fast-TwitchMuscle, Smooth, VascularMuscle Fibers, Slow-TwitchMitochondria, MuscleRegional Blood FlowMuscle DenervationUterine ContractionMyocardial ContractionMuscle RelaxationSatellite Cells, Skeletal MuscleMyofibrilsMuscular AtrophyElectromyographyMuscular DiseasesHindlimbTime FactorsMuscle SpindlesQuadriceps MuscleMuscle CellsRats, WistarMyocytes, Smooth MuscleRats, Sprague-DawleyGlycogenMyosin Heavy ChainsMuscle, StriatedSarcomeresSarcoplasmic ReticulumNerve FibersMyoblastsMuscle WeaknessGuinea PigsActinsOculomotor MusclesVasoconstrictionPapillary MusclesPhysical ExertionMyocardiumDiaphragmNeck MusclesCells, CulturedInsulinRNA, MessengerMotor NeuronsAdenosine TriphosphateIsotonic ContractionRespiratory MusclesBiomechanical PhenomenaKineticsMyoblasts, SkeletalTracheaExerciseAbdominal MusclesDose-Response Relationship, DrugSarcolemmaMuscular Dystrophy, AnimalPsoas MusclesGlucosePotassium ChlorideNeuromuscular JunctionCaffeineSignal TransductionPhosphorylationMyoD ProteinMyostatinModels, BiologicalPhysical Conditioning, AnimalOxygen ConsumptionAcetylcholinePhysical EnduranceMice, Inbred mdxRegenerationRyanodine Receptor Calcium Release ChannelMice, Inbred C57BLDogsPhosphocreatineMembrane PotentialsRana temporariaMyosin Light ChainsMolecular Sequence DataMasseter MuscleEnergy MetabolismFacial MusclesGlucose Transporter Type 4Masticatory Muscles