Synergistic efficacy of repetitive peripheral magnetic stimulation on central intermittent theta burst stimulation for upper limb function in patients with stroke: a double-blinded, randomized controlled trial.
Chi-Shou Chang, Chia-Ling Chen, Rou-Shayn Chen and 6 others
PMID 38589875WHAT IT FOUND
Adding peripheral magnetic stimulation to brain stimulation did not improve overall upper limb function more than brain stimulation alone.
Both groups improved similarly. Only the combined group showed a significant gain in one grasp subtest, but this difference did not reach statistical significance when comparing the two groups directly.
Key findings
01The primary outcome measure of overall upper limb motor function (FMA-UE) showed significant improvement in both groups after treatment, but there was no significant difference in improvement between the real peripheral stimulation group and the sham group.
02While the combined group showed significant improvement in the Grasp domain of the Action Research Arm Test, the difference in change scores between the combined and sham groups was not statistically significant.
03All patients received comprehensive rehabilitation including physical therapy and occupational therapy in addition to the magnetic stimulation interventions.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The sample size was very small (28 participants), which limits the statistical power to detect true differences between groups. The study used convenience sampling from a single rehabilitation department, which may limit generalizability. There were baseline imbalances in sex and cognitive status (MMSE) between the groups, although these were adjusted for in the analysis. The study did not assess long-term effects, so it is unknown if any potential benefits or differences would emerge or fade over time. All participants received concurrent physical and occupational therapy, making it impossible to isolate the specific contribution of the magnetic stimulation components from the standard rehabilitation.
Declared interests
The paper states it was supported by non-U.S. government funding. No specific conflicts of interest involving commercial entities are listed in the provided text.
The easy way to misread this
Do not conclude that rPMS enhances grasp function based on the within-group significance in the combined group. The direct comparison between the combined and sham groups for this outcome was not statistically significant, and the overall primary outcomes were null.