Muscle, SkeletalMuscle ContractionMusclesMuscle Fibers, SkeletalMuscle ProteinsIsometric ContractionMuscle, SmoothMuscle FatigueTroponin CTroponinMuscle DevelopmentMuscle, Smooth, VascularMyosinsRabbitsCalciumTropomyosinElectric StimulationMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMitochondria, MuscleMuscle DenervationRegional Blood FlowSatellite Cells, Skeletal MuscleMuscle RelaxationMuscular AtrophyMyocytes, Smooth MuscleMuscular DiseasesMyofibrilsMuscle, StriatedMuscle SpindlesMuscle CellsQuadriceps MuscleElectromyographyMuscle WeaknessOculomotor MusclesHindlimbNeck MusclesPapillary MusclesRespiratory MusclesGlycogenMyoblastsTime FactorsAbdominal MusclesMyosin Heavy ChainsRats, Sprague-DawleyRats, WistarSarcoplasmic ReticulumSarcomeresCells, CulturedPhysical ExertionInsulinDiaphragmMyocardial ContractionActinsFacial MusclesRNA, MessengerMasseter MuscleMyoblasts, SkeletalMyocardiumMasticatory MusclesPsoas MusclesExerciseMuscular Dystrophy, AnimalMyoD ProteinIntercostal MusclesMyostatinGlucoseKineticsUterine ContractionBiomechanical PhenomenaRegenerationMotor NeuronsSarcolemmaNeuromuscular JunctionMice, Inbred mdxAdenosine TriphosphateSignal TransductionOxygen ConsumptionPhysical EndurancePhosphorylationPectoralis MusclesGuinea PigsMice, Inbred C57BLRyanodine Receptor Calcium Release ChannelModels, BiologicalGlucose Transporter Type 4Molecular Sequence DataPhosphocreatineTracheaEnergy MetabolismGene Expression RegulationDystrophinAgingCreatine KinasePhysical Conditioning, AnimalCaffeineLegVasoconstrictionDose-Response Relationship, DrugSkeletal Muscle Myosins