Dystonic DisordersDystonia Musculorum DeformansMuscle ContractionMusclesMuscle, SmoothMuscle, SkeletalIsometric ContractionMuscle ProteinsMuscle, Smooth, VascularMuscle Fibers, SkeletalMuscle FatigueElectric StimulationUterine ContractionMuscle DevelopmentMyocardial ContractionMuscle RelaxationCalciumElectromyographyMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchRabbitsMyocytes, Smooth MuscleMuscle SpindlesTracheaMuscle DenervationGuinea PigsMuscle, StriatedMitochondria, MuscleVasoconstrictionPapillary MusclesNeck MusclesMyofibrilsMyosinsOculomotor MusclesPeristalsisMotor NeuronsBiomechanical PhenomenaPotassium ChlorideMyosin Light ChainsTropomyosinHindlimbTime FactorsRespiratory MusclesIsotonic ContractionMuscle WeaknessAbdominal Muscles