Muscle, SkeletalMuscle ContractionMusclesMuscle Fibers, SkeletalIsometric ContractionMuscle ProteinsMuscle FatigueTroponin CTroponinMuscle, SmoothElectric StimulationMyosinsMuscle Fibers, Fast-TwitchTropomyosinRabbitsCalciumMuscle DevelopmentMuscle Fibers, Slow-TwitchMuscle DenervationMuscle, Smooth, VascularMitochondria, MuscleRegional Blood FlowMuscular AtrophyHindlimbElectromyographyPhysical Conditioning, AnimalMuscle RelaxationMuscle SpindlesRats, WistarGlycogenMotor NeuronsMyofibrilsRats, Sprague-DawleyHindlimb SuspensionPhysical ExertionTendonsBiomechanical PhenomenaTime FactorsMuscular DiseasesLegSatellite Cells, Skeletal MuscleMyosin Heavy ChainsCatsAnkle JointMyostatinPhosphocreatineMyocytes, Smooth MuscleQuadriceps MuscleMuscle, StriatedMuscle WeaknessOrgan SizePhysical EnduranceMyocardial ContractionNeck MusclesOculomotor MusclesMuscle CellsInsulinBody WeightOxygen ConsumptionUterine ContractionRunningPapillary MusclesRNA, MessengerMusculoskeletal Physiological PhenomenaRespiratory MusclesCachexiaTorqueMyocardiumNeuromuscular JunctionMyoblastsAgingEnergy MetabolismCitrate (si)-SynthaseAdenosine TriphosphateAbdominal MusclesMuscular Dystrophy, AnimalDiaphragmSarcomeresHypertrophyExerciseGlucoseMice, Inbred C57BLLocomotionCells, CulturedKineticsSarcolemmaMice, Inbred mdxGlucose Transporter Type 4Recruitment, NeurophysiologicalActinsLactic AcidModels, BiologicalFacial MusclesSignal TransductionAdaptation, PhysiologicalTibial NervePhosphorylationDose-Response Relationship, DrugGuinea PigsAchilles Tendon