ThighMuscle, SkeletalMusclesTrack and FieldQuadriceps MuscleMuscle ContractionMuscle StrengthMuscle ProteinsMuscle, SmoothIsometric ContractionMuscle Fibers, SkeletalElectromyographyMuscle, Smooth, VascularHindlimbLegMuscle DevelopmentBiomechanical PhenomenaBody CompositionMagnetic Resonance ImagingKnee JointAbsorptiometry, PhotonRabbitsInjections, IntramuscularMuscle FatigueTomography, X-Ray ComputedMuscle Fibers, Fast-TwitchExerciseTime FactorsMuscle DenervationMuscle Fibers, Slow-TwitchMyocytes, Smooth MuscleMitochondria, MuscleAnalysis of VarianceNeck MusclesChickensOculomotor MusclesRegional Blood FlowMuscle WeaknessMuscle, StriatedMuscle SpindlesMuscle RelaxationRespiratory MusclesPapillary MusclesBody Mass IndexAbdominal MusclesMuscle CellsMuscular AtrophyMuscular DiseasesMasseter MuscleFacial MusclesMasticatory MusclesIntercostal MusclesPsoas MusclesSatellite Cells, Skeletal MusclePectoralis MusclesDisabled PersonsMyofibrilsMuscle NeoplasmsTemporal MuscleElectric Stimulation