The relationship between muscle discrimination ability and response to relaxation training in three kinds of headaches

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Abstract
Accurate discrimination of changes in physiological response has been noted as an important element in learning to control that response. Using a magnitude production procedure involving forearm isometric contractions, it was found that the ability to discriminate muscle tension varied across headache groups, with the no-headache control group (r=.76) being most accurate, followed by the tension group (r=.68), the mixed tension and migraine group (r=.60), and finally the migraine group (r=.51). The most important result, however, was that muscle discrimination ability significantly predicted clinical outcome from treatment by relaxation training for tension headache subjects (r=.50) but did not predict outcome for migraine or mixed headache subjects.

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