ThighMuscle, SkeletalMusclesTrack and FieldQuadriceps MuscleMuscle ContractionMuscle StrengthMuscle ProteinsMuscle, SmoothIsometric ContractionMuscle Fibers, SkeletalMuscle, Smooth, VascularElectromyographyHindlimbLegMuscle DevelopmentBiomechanical PhenomenaBody CompositionMagnetic Resonance ImagingAbsorptiometry, PhotonKnee JointRabbitsInjections, IntramuscularMuscle FatigueMuscle Fibers, Fast-TwitchTomography, X-Ray ComputedMuscle DenervationExerciseMuscle Fibers, Slow-TwitchTime FactorsMyocytes, Smooth MuscleMitochondria, MuscleAnalysis of VarianceNeck MusclesChickensOculomotor MusclesRegional Blood FlowMuscle, StriatedMuscle WeaknessMuscle SpindlesMuscle RelaxationRespiratory MusclesPapillary MusclesAbdominal MusclesBody Mass IndexMuscle CellsMuscular AtrophyMasseter MuscleMuscular DiseasesFacial MusclesMasticatory MusclesIntercostal MusclesPsoas MusclesSatellite Cells, Skeletal MusclePectoralis MusclesMyofibrilsMuscle NeoplasmsTemporal MuscleElectric Stimulation