Muscle WeaknessBody Mass IndexMuscular AtrophyMusclesMuscle, SkeletalAtrophyMuscle ProteinsMuscle Fibers, SkeletalMuscle, SmoothMuscle ContractionMuscle, Smooth, VascularMuscle DevelopmentHindlimb SuspensionMuscle DenervationObesityMuscle Fibers, Slow-TwitchMuscle Fibers, Fast-TwitchMuscle FatigueSKP Cullin F-Box Protein LigasesMuscular DiseasesRespiratory MusclesMuscular Disorders, AtrophicMitochondria, MuscleQuadriceps MuscleMyopathies, NemalineMyocytes, Smooth MuscleNeuromuscular DiseasesMyostatinRisk FactorsBody WeightElectromyographyIsometric ContractionOculomotor MusclesNeck MusclesTime FactorsDiaphragmMuscular Atrophy, SpinalMuscle, StriatedMuscle SpindlesSatellite Cells, Skeletal MuscleMuscle RelaxationMuscle CellsPapillary MusclesMyositisOverweightMuscle StrengthExerciseMyosin Heavy ChainsAbdominal MusclesCross-Sectional StudiesBody CompositionMyofibrilsImmobilizationProspective StudiesFacial MusclesMasseter MuscleAnthropometryMasticatory MusclesHindlimbCohort StudiesOrgan SizeIntercostal MusclesPolymyositisMyoblastsAgingAge FactorsCachexiaCase-Control StudiesNeuromuscular JunctionOptic AtrophySpinal Muscular Atrophies of ChildhoodBiomechanical PhenomenaThinnessSarcopeniaPectoralis MusclesMotor NeuronsInsulinMuscular DystrophiesAdipose TissueDisease Models, AnimalAnalysis of VarianceSeverity of Illness IndexSex FactorsRNA, MessengerMotor ActivityBlood PressureFollow-Up StudiesBody HeightCells, CulturedWeight LossElectric StimulationMagnetic Resonance ImagingBlood GlucoseRegression AnalysisWaist CircumferenceRats, Sprague-DawleyBiological MarkersPhenotypeMice, Inbred C57BLDermatomyositis