alexa Effects of repetitive transcranial magnetic stimulation on motor functions in patients with stroke: a meta-analysis.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Hsu WY, Cheng CH, Liao KK, Lee IH, Lin YY

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Abstract BACKGROUND AND PURPOSE: The purpose of this study was to perform a meta-analysis of studies that investigated the effects of repetitive transcranial magnetic stimulation (rTMS) on upper limb motor function in patients with stroke. METHODS: We searched for randomized controlled trials published between January 1990 and October 2011 in PubMed, Medline, Cochrane, and CINAHL using the following key words: stroke, cerebrovascular accident, and repetitive transcranial magnetic stimulation. The mean effect size and a 95\% CI were estimated for the motor outcome and motor threshold using fixed and random effect models. RESULTS: Eighteen of the 34 candidate articles were included in this analysis. The selected studies involved a total of 392 patients. A significant effect size of 0.55 was found for motor outcome (95\% CI, 0.37-0.72). Further subgroup analyses demonstrated more prominent effects for subcortical stroke (mean effect size, 0.73; 95\% CI, 0.44-1.02) or studies applying low-frequency rTMS (mean effect size, 0.69; 95\% CI, 0.42-0.95). Only 4 patients of the 18 articles included in this analysis reported adverse effects from rTMS. CONCLUSIONS: rTMS has a positive effect on motor recovery in patients with stroke, especially for those with subcortical stroke. Low-frequency rTMS over the unaffected hemisphere may be more beneficial than high-frequency rTMS over the affected hemisphere. Recent limited data suggest that intermittent theta-burst stimulation over the affected hemisphere might be a useful intervention. Further well-designed studies in a larger population are required to better elucidate the differential roles of various rTMS protocols in stroke treatment. This article was published in Stroke and referenced in Journal of Addiction Research & Therapy

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