Repetitive peripheral magnetic stimulation combined with transcranial magnetic stimulation in rehabilitation of upper extremity hemiparesis following stroke: a pilot study.
Sijie Liang, Weining Wang, Fengyun Yu and 6 others
PMID 38298134WHAT IT FOUND
Adding repetitive peripheral magnetic stimulation to standard therapy and brain stimulation did not improve upper-limb recovery more than brain stimulation and therapy alone.
Both active groups improved significantly more than the sham group, but the added peripheral stimulation offered no extra benefit.
Key findings
01The addition of repetitive peripheral magnetic stimulation (rPMS) to repetitive transcranial magnetic stimulation (rTMS) and physiotherapy resulted in no significant difference in upper-limb motor function compared to rTMS and physiotherapy alone.
02Both active stimulation groups showed significantly greater improvement in Fugl-Meyer Assessment Upper Extremity scores compared to the sham control group.
03Changes in neurophysiological measures of cortical excitability did not correlate with clinical improvements in motor function.
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
This was a pilot study with a small sample size (15 patients per group), which limits the statistical power to detect differences between the active treatment arms. The study lacked long-term follow-up, assessing outcomes only at 4 weeks, so it is unclear if the benefits of any specific intervention persist. Neuroimaging was not used to guide coil placement, which may have affected the precision of stimulation. The authors note that the stimulation intensity might have been suboptimal, potentially masking differences between the rTMS and rTMS+rPMS groups.
Declared interests
The authors have no conflicts of interest to declare.
The easy way to misread this
Do not conclude that rPMS is ineffective for stroke rehabilitation in general. This study only tested rPMS as an add-on to rTMS and physiotherapy. It shows that adding rPMS to that specific combination did not improve results further, but it does not rule out rPMS being effective when combined with physiotherapy alone, or under different stimulation parameters.