Muscle, SkeletalMusclesMuscle Fibers, SkeletalMuscle ProteinsMuscle DevelopmentMuscle ContractionMuscle, SmoothMuscular AtrophyMuscle, Smooth, VascularMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMitochondria, MuscleMyostatinSarcopeniaMuscle DenervationMuscle FatigueSatellite Cells, Skeletal MuscleMuscle WeaknessQuadriceps MuscleMuscular DiseasesMyocytes, Smooth MuscleNeck MusclesIsometric ContractionMuscle CellsOculomotor MusclesMuscle, StriatedMuscle RelaxationHindlimbRespiratory MusclesMuscle SpindlesOrgan SizeMyofibrilsMyoblastsMyosin Heavy ChainsPapillary MusclesRabbitsAgingHindlimb SuspensionBody CompositionGlycogenAbdominal MusclesMuscle StrengthMasseter MuscleHypertrophyExerciseMyoblasts, SkeletalIntercostal MusclesTime FactorsMyoD ProteinCalciumPectoralis MusclesElectromyographyMuscular Dystrophy, AnimalRNA, MessengerInsulinMasticatory MusclesFacial MusclesBody WeightMuscular Disorders, AtrophicRegenerationMass SpectrometryPhysical ExertionCells, CulturedMice, Inbred mdxElectric StimulationPhysical EnduranceDiaphragmLegRats, Sprague-DawleyRats, WistarOxygen ConsumptionPsoas MusclesMice, Inbred C57BLThighMyogeninCachexiaEnergy MetabolismBiomechanical PhenomenaMyocardiumGlucoseSignal TransductionTemporal MuscleSarcoplasmic ReticulumGene Expression RegulationSarcomeresAdipose TissueMolecular Sequence DataCitrate (si)-SynthaseKineticsBody Mass IndexNeuromuscular JunctionCreatine KinasePhysical Conditioning, AnimalSarcolemmaActinsSKP Cullin F-Box Protein LigasesModels, BiologicalDystrophinAbsorptiometry, PhotonInsulin Resistance