Neck MusclesWhiplash InjuriesMusclesNeckMuscle, SkeletalMuscle ProteinsMuscle, SmoothHead MovementsMuscle Fibers, SkeletalMuscle, Smooth, VascularMuscle ContractionElectromyographyNeck PainMuscle DevelopmentHead and Neck NeoplasmsHeadTorticollisFacial MusclesMuscle FatigueMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchVibrationMyocytes, Smooth MuscleMitochondria, Muscle