PTRCTJournal of neuroengineering and rehabilitation2025

Spatially distributed sequential stimulation applied to the paralyzed quadriceps muscles while performing motor-assisted FES cycling.

Petar Kajganić, Ehsan Jafari, Amine Metani and 3 others

PMID 41316407

WHAT IT FOUND

During motor-assisted FES cycling, four small electrodes delivering pulses sequentially produced more paralyzed quadriceps power than four electrodes connected as one large electrode.

The fatigue measure did not differ, and only four participants were tested.

Key findings

01SDSS produced higher mean quadriceps power than SES during motor-assisted FES cycling.

02The fatigue index did not differ significantly between SDSS and SES.

03The higher power with SDSS was seen in every session regardless of subject, limb, or stimulation order.

STILL TO COME

How it was doneWhat they foundWhat it means for PTs

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What it does not show

Only four lower-limb motor-complete subjects participated, all with prior FES experience, so the result may not apply to typical new patients. The stimulation phases lasted only 3 minutes, so the study does not show whether SDSS maintains a power advantage over a full training session. The comparison was made only at moderate stimulation intensity, and the authors note that SDSS benefits may decrease as intensity rises. The fatigue index did not differ between methods, so no fatigue-reducing effect can be claimed. Electrode placement required trial and error and can take up to 15 minutes, which is not practical for routine clinical or home use.

Declared interests

Funding was provided by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia.

The easy way to misread this

Do not conclude that SDSS reduces fatigue or improves endurance. The fatigue index did not differ, only four subjects were tested, and the cycling was motor-assisted.

Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →