ArticleEuropean journal of translational myology2025
Immediate effects of electrical stimulation on serratus anterior muscle activity in people with hemiplegia post-stroke.
Article in European journal of translational myology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Upper limb impairment occurs in approximately 80% of stroke survivors, with altered scapular kinematics playing a key role in dysfunction. Serratus anterior weakness post-stroke contributes to abnormal scapular motion, limiting shoulder and arm function. This study explored whether Electrical Stimulation (ES) could immediately enhance serratus anterior activity in individuals with post-stroke hemiplegia. A pre-post intervention design was used involving 19 individuals within three months post-stroke. Surface Electromyography (sEMG) recorded serratus anterior activity during a forward reach task. The Fugl-Meyer Assessment (FMA) was also administered. Participants received 20 minutes of ES targeting the serratus anterior, after which sEMG and FMA were reassessed. Wilcoxon signed rank test compared pre- and post-intervention sEMG values. Statistical analysis showed a significant change in the area under the curve value(p < 0.01) but no significant change in RMS value. There was no change in FMA scale. Electrical stimulation showed significant changes in the muscle activity of the serratus anterior, indicating a reduction in the cost of the muscle work done during the forward reach task.
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