Muscle HypotoniaMuscle WeaknessMuscle CrampMuscular DiseasesMyopathies, NemalineMuscle, SkeletalMice, Inbred mdxMusclesMuscular AtrophyUtrophinMuscular Dystrophy, DuchenneMuscle ProteinsMuscle, SmoothAbnormalities, MultipleMuscle Fibers, SkeletalMuscle, Smooth, VascularPhenotypeIntellectual DisabilityMuscle DevelopmentMuscle ContractionFaciesSyndromePrader-Willi SyndromeDisease Models, AnimalMuscle FatigueMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchMyopathies, Structural, CongenitalMyocytes, Smooth MuscleMitochondria, MuscleMuscle HypertoniaDevelopmental DisabilitiesNeck MusclesOculomotor MusclesMicrocephalyAtaxiaMuscle, StriatedMuscle SpindlesElectromyographyMuscle RelaxationRespiratory MusclesPapillary MusclesMyopathy, Central CoreChromosomes, Human, XChromosome Deletion