Muscle, SkeletalMuscle ContractionMusclesMuscle Fibers, SkeletalIsometric ContractionContractsMuscle ProteinsMuscle FatigueTroponin CTroponinMuscle, SmoothElectric StimulationMuscle Fibers, Fast-TwitchMyosinsRabbitsMuscle Fibers, Slow-TwitchTropomyosinCalciumContract ServicesMuscle DevelopmentMuscle DenervationMuscle, Smooth, VascularMitochondria, MuscleMuscular AtrophyRegional Blood FlowHindlimbElectromyographyPhysical Conditioning, AnimalMuscle RelaxationMuscle SpindlesMyofibrilsRats, WistarMotor NeuronsRats, Sprague-DawleyGlycogenTime FactorsHindlimb SuspensionBiomechanical PhenomenaPhysical ExertionTendonsMuscular DiseasesCatsMyosin Heavy ChainsLegSatellite Cells, Skeletal MuscleMyostatinAnkle JointPhosphocreatineMyocytes, Smooth MuscleNerve FibersQuadriceps MuscleMuscle, StriatedOrgan SizeMuscle WeaknessMyocardial ContractionPhysical EnduranceOculomotor MusclesNeck MusclesBody WeightMuscle CellsInsulinOxygen ConsumptionRNA, MessengerNeuromuscular JunctionRunningPapillary MusclesUterine ContractionMyocardiumMusculoskeletal Physiological PhenomenaAgingRespiratory MusclesSarcomeresAdenosine TriphosphateCachexiaTorqueMyoblastsEnergy MetabolismDiaphragmMuscular Dystrophy, AnimalCitrate (si)-SynthaseActinsCells, CulturedAbdominal MusclesMice, Inbred C57BLKineticsHypertrophyModels, BiologicalExerciseMice, Inbred mdxSarcolemmaGlucoseGuinea PigsLocomotionStress, MechanicalDose-Response Relationship, DrugSignal TransductionRecruitment, NeurophysiologicalGlucose Transporter Type 4Lactic AcidRats, Inbred Strains