Abstract:
BACKGROUND AND PURPOSE:The purpose of this study was to examine the efficacy of electromyographic biofeedback compared with conventional physical therapy for improving upper-extremity function in patients following a stroke. SUBJECTS AND METHODS:A literature search was done for the years 1976 to 1992. The selection criteria included single-blinded randomized control trials. Study quality was assessed for nine criteria. For functional (disability index or stage of recovery) and impairment outcomes, meta-analyses were performed on odds ratios for improvement versus no improvement. Mann-Whitney U-Test probability values were combined across studies. RESULTS:Six studies were selected, and outcome data were obtained for five studies. The common odds ratio was 2.2 for function and 1.1 for impairments in favor of biofeedback. The estimate of the number needed to treat to prevent a nonresponder was 11 for function and 22 for impairments. None of the meta-analyses were statistically significant. CONCLUSIONS AND DISCUSSION:The results do not conclusively indicate superiority of either form of therapy. Although there is a chance of Type II error, the estimated size of the effect is small. Given this estimate of little or no difference, therapists need to consider cost, ease of application, and patient preference when selecting these therapies.
journal_name
Phys Therjournal_title
Physical therapyauthors
Moreland J,Thomson MAdoi
10.1093/ptj/74.6.534subject
Has Abstractpub_date
1994-06-01 00:00:00pages
534-43; discussion 544-7issue
6eissn
0031-9023issn
1538-6724journal_volume
74pub_type
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