title: Relaxation training and biofeedback in the reduction of frontalis muscle tension.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001143:Arousal; D001307:Auditory Perception; D004576:Electromyography; D005246:Feedback; D005260:Female; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D012064:Relaxation Therapy; D012737:Sex Factors