Muscle HypotoniaMuscle WeaknessMusclesMuscle, SkeletalMuscle ProteinsMuscle, SmoothAbnormalities, MultipleMuscle Fibers, SkeletalMuscle, Smooth, VascularIntellectual DisabilityMuscle ContractionMuscle DevelopmentSyndromeFaciesMuscular DiseasesPrader-Willi SyndromeMyopathies, NemalineMuscle FatigueMyopathies, Structural, CongenitalMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchRespiratory MusclesElectromyographyMitochondria, MuscleMyocytes, Smooth MuscleAtaxiaMuscle HypertoniaOculomotor MusclesNeck MusclesDevelopmental DisabilitiesMicrocephalyQuadriceps MuscleMuscular AtrophyMuscle, StriatedMuscle SpindlesMuscle RelaxationMyopathy, Central CorePapillary MusclesPhenotypePedigreeMuscular DystrophiesChromosomes, Human, X