Abstract
A clinical trial involving rheumatoid arthritis patients hospitalized due to an exacerbation of their disease, was initiated in order to determine whether EMG biofeedback when used in conjunction with isometric exercise enhanced quadriceps strengthening. The parameters of muscle bulk, strength and motor unit activity were measured before, during and after the trial to determine any improvements occurring. Results showed that in predominantly elderly patients there was no significant increase in quadriceps strengthening when EMG biofeed-back was used. Further, for subjects under 45 years of age, EMG biofeedback was not shown to effect significant improvement.
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