Muscle, SkeletalMuscle ContractionMusclesMuscle Fibers, SkeletalIsometric ContractionMuscle ProteinsMuscle FatigueMuscle Fibers, Fast-TwitchElectromyographyElectric StimulationMuscle, SmoothHindlimbMuscle Fibers, Slow-TwitchTroponin CMuscle DenervationTroponinMuscle DevelopmentMyosinsMuscular AtrophyRabbitsMitochondria, MuscleMuscle, Smooth, VascularTropomyosinCalciumLegMotor NeuronsPeroneal NerveAnkle JointTendonsTibial NerveMice, Inbred mdxRegional Blood FlowMuscular Dystrophy, AnimalRats, WistarGlycogenPhysical Conditioning, AnimalImmobilizationBiomechanical PhenomenaTime FactorsRegenerationMyosin Heavy ChainsPhysical ExertionRats, Sprague-DawleyMuscle SpindlesMuscle RelaxationFootAnkleH-ReflexReflex, StretchCitrate (si)-SynthaseNeuromuscular JunctionMyofibrilsOrgan SizeFoot Deformities, CongenitalCobra Cardiotoxin ProteinsMyocytes, Smooth MuscleMuscular DiseasesHindlimb SuspensionCatsSatellite Cells, Skeletal MuscleMuscular Dystrophy, DuchenneSuccinate DehydrogenaseMuscle WeaknessMuscle, StriatedRNA, MessengerQuadriceps MuscleInjections, IntramuscularNeck MusclesAgingOculomotor MusclesErgometryRana temporariaMyostatinDystrophinMice, Inbred C57BLAdaptation, PhysiologicalPapillary MusclesHistocytochemistryMuscle CellsPhosphocreatineMyoblastsPostureNeural ConductionRespiratory MusclesThoracic NervesPhysical EnduranceAbdominal MusclesAction PotentialsTorqueInsulinBody WeightDiaphragmRunningParalysisOxygen ConsumptionEvoked Potentials, MotorSarcomeresFacial MusclesMyocardial ContractionMasticatory Muscles