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  • Title: Muscle discrimination ability at three muscle sites in three headache groups.
    Author: Appelbaum KA, Blanchard EB, Andrasik F.
    Journal: Biofeedback Self Regul; 1984 Dec; 9(4):421-30. PubMed ID: 6399461.
    Abstract:
    The present study examined the ability of three headache groups (migraine, mixed migraine/tension, and tension) to accurately discriminate subjective levels of muscle tension at the forearm flexor, frontalis, and trapezius muscle sites. Discrimination ability was assessed at pre- and posttreatment using a psychophysical method of magnitude production. Results show that the ability to discriminate muscle tension levels at pretreatment varied across the headache groups, with migraineurs being the most accurate (r = .854), followed by the mixed headache group (r = .785), and finally the tension headache group (r = .732). Discrimination ability significantly increased at the posttreatment assessment. A multiple regression analysis showed that pretreatment performance on the muscle discrimination task significantly predicted outcome (r = .75) from relaxation and biofeedback training for migraine patients but not for the mixed or tension headache groups.
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