Muscle, SkeletalMuscle ContractionMuscle Fibers, SkeletalMusclesMuscle ProteinsIsometric ContractionTroponin CTroponinMuscle FatigueMuscle, SmoothMyosinsRabbitsTropomyosinCalciumElectric StimulationMuscle DevelopmentMuscle, Smooth, VascularMuscle Fibers, Fast-TwitchMitochondria, MuscleMuscle Fibers, Slow-TwitchRegional Blood FlowMuscle DenervationSatellite Cells, Skeletal MuscleMuscular AtrophyMuscle RelaxationMyofibrilsMuscular DiseasesHindlimbElectromyographyMuscle CellsQuadriceps MuscleMyocytes, Smooth MuscleMuscle, StriatedGlycogenMuscle SpindlesMyoblastsMuscle WeaknessTime FactorsMyosin Heavy ChainsOculomotor MusclesMyocardial ContractionRats, WistarSarcoplasmic ReticulumNeck MusclesRats, Sprague-DawleySarcomeresInsulinPhysical ExertionPapillary MusclesUterine ContractionMyoblasts, SkeletalRespiratory MusclesActinsMyocardiumRNA, MessengerCells, CulturedDiaphragmExerciseAbdominal MusclesGlucoseMyoD ProteinKineticsMyostatinMuscular Dystrophy, AnimalSarcolemmaAdenosine TriphosphateRegenerationPsoas MusclesPhysical Conditioning, AnimalRyanodine Receptor Calcium Release ChannelMice, Inbred mdxOxygen ConsumptionSignal TransductionPhosphorylationBiomechanical PhenomenaMotor NeuronsPhysical EnduranceNeuromuscular JunctionGlucose Transporter Type 4Guinea PigsFacial MusclesMice, Inbred C57BLMasseter MuscleMolecular Sequence DataModels, BiologicalMasticatory MusclesPhosphocreatineVasoconstrictionEnergy MetabolismTracheaCaffeineGene Expression RegulationDystrophinCreatine KinaseAgingDose-Response Relationship, DrugIntercostal MusclesSkeletal Muscle MyosinsCitrate (si)-SynthaseMyogenin