Muscle HypotoniaMusclesPainMuscle, SkeletalMuscle ProteinsMuscle, SmoothAbnormalities, MultipleMuscle Fibers, SkeletalMuscle, Smooth, VascularChronic PainPain ManagementIntellectual DisabilityMuscle DevelopmentMuscle ContractionPain ThresholdSyndromeFaciesPrader-Willi SyndromePain, PostoperativeLow Back PainBack PainPain MeasurementMuscle FatigueMuscle Fibers, Fast-TwitchNeck PainMuscle DenervationAbdominal PainPain, IntractableMuscle Fibers, Slow-TwitchMyopathies, Structural, CongenitalMuscular DiseasesMyopathies, NemalineMyocytes, Smooth MuscleMitochondria, MuscleMuscle HypertoniaPelvic PainNeck MusclesPain PerceptionFacial PainDevelopmental DisabilitiesOculomotor MusclesMicrocephalyAtaxiaElectromyographyPain, ReferredAcute PainMuscle, StriatedMuscle SpindlesMuscle RelaxationMuscle WeaknessRespiratory MusclesPapillary MusclesMyopathy, Central CoreAbdominal MusclesChromosomes, Human, XQuadriceps MuscleChromosome Deletion