MyostatinBody CompositionMuscle, SkeletalMusclesMuscular AtrophyMuscle ProteinsMuscle Fibers, SkeletalSarcopeniaMuscle DevelopmentMuscle, SmoothMuscle ContractionMuscle, Smooth, VascularFollistatinMuscle Fibers, Fast-TwitchOrgan SizeMuscle Fibers, Slow-TwitchHypertrophyActivin Receptors, Type IIMuscle DenervationMuscle FatigueMuscle WeaknessMuscle StrengthBody WeightSatellite Cells, Skeletal MuscleQuadriceps MuscleMitochondria, MuscleMass SpectrometryTransforming Growth Factor betaAgingHindlimb SuspensionMuscular DiseasesMyoblastsBody Mass IndexAbsorptiometry, PhotonCachexiaNeck MusclesAdipose TissueMyoD ProteinIsometric ContractionMyocytes, Smooth MuscleObesityThinnessOculomotor MusclesMuscular Disorders, AtrophicPectoralis MusclesRespiratory MusclesExerciseMuscle, StriatedMuscular Dystrophy, AnimalMuscle SpindlesMuscle RelaxationTime FactorsSKP Cullin F-Box Protein LigasesMuscle CellsMyoblasts, SkeletalPapillary MusclesRNA, MessengerMyosin Heavy ChainsInsulin-Like Growth Factor IMice, Inbred C57BLHindlimbMasseter MuscleIntercostal MusclesEnergy MetabolismMice, Inbred mdxThighAbdominal MusclesFollistatin-Related ProteinsLegMyogeninRegenerationElectromyographyGene Expression RegulationInsulinSignal TransductionMusculoskeletal DevelopmentBiomechanical PhenomenaMasticatory MusclesFacial MusclesTemporal MuscleMusculoskeletal Physiological PhenomenaMyofibrilsCells, CulturedMyogenic Regulatory Factor 5AnthropometryPhysical ExertionMyogenic Regulatory FactorsPhysical EnduranceMeatWasting SyndromeRats, WistarMice, KnockoutOxygen ConsumptionHand StrengthResistance TrainingInsulin ResistanceRats, Sprague-DawleyWeight LiftingGlycogenEating