The treatment of tension headache--II. EMG 'normality' and relaxation.
D000328:Adult; D001676:Biofeedback, Psychology; D004576:Electromyography; D005260:Female; D006261:Headache / Q000628:therapy*; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D009126:Muscle Relaxation; D009129:Muscle Tonus