Muscular Atrophy, SpinalMuscular AtrophyAtrophySpinal Muscular Atrophies of ChildhoodSurvival of Motor Neuron 1 ProteinSMN Complex ProteinsMusclesMuscle, SkeletalSurvival of Motor Neuron 2 ProteinMuscular Disorders, AtrophicSpinal CordMuscle ProteinsMuscle Fibers, SkeletalHindlimb SuspensionMuscle, SmoothSKP Cullin F-Box Protein LigasesMuscle DenervationBulbo-Spinal Atrophy, X-LinkedMuscle ContractionMuscle DevelopmentMuscle, Smooth, VascularSpinal Cord InjuriesMotor NeuronsNeuronal Apoptosis-Inhibitory ProteinOptic AtrophyMuscle WeaknessCyclic AMP Response Element-Binding ProteinMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchAnterior Horn CellsMyostatinMuscle FatigueRNA-Binding ProteinsMitochondria, MuscleMultiple System AtrophyElectromyographyDisease Models, AnimalNerve Tissue ProteinsMotor Neuron DiseaseImmobilizationSatellite Cells, Skeletal MuscleMyocytes, Smooth MuscleMuscular DiseasesSpinal Cord DiseasesQuadriceps MuscleNeck MusclesOculomotor MusclesMuscle, StriatedMice, TransgenicMuscle CellsMuscle SpindlesHindlimbRibonucleoproteins, Small NuclearNeuromuscular DiseasesRespiratory MusclesMuscle RelaxationIsometric ContractionOrgan SizeMagnetic Resonance ImagingNeuromuscular JunctionPapillary MusclesMyosin Heavy ChainsDEAD Box Protein 20Rats, Sprague-DawleyCachexiaTime FactorsOlivopontocerebellar AtrophiesSpinal Nerve RootsRNA, MessengerExonsAbdominal MusclesUbiquitin-Protein LigasesMyofibrilsChromosomes, Human, Pair 5Cells, CulturedGene Expression RegulationMasseter MusclePhenotypeMyoblastsInjections, SpinalFacial MusclesGyrate AtrophyMasticatory MusclesMice, Inbred C57BLSpinal NervesSignal TransductionIntercostal MusclesDiaphragmCoiled BodiesRats, WistarMice, KnockoutNeural ConductionElectric StimulationSarcopeniaReceptors, AndrogenHypertrophyAnesthesia, SpinalBed RestMyogeninsnRNP Core Proteins