Multiparametric MRI Assessment of Morpho-Functional Muscle Changes Following a 6-Month FES-Cycling Training Program: Pilot Study in People With a Complete Spinal Cord Injury.
Alfonso Mastropietro, Denis Peruzzo, Maria Giovanna Taccogna and 7 others
PMID 39819652WHAT IT FOUND
Four men with complete spinal cord injury who cycled with electrical stimulation for six months showed increased thigh muscle volume and reduced fat infiltration on MRI.
These changes reversed slightly after stopping. No control group was used, so this is a feasibility check, not proof of efficacy.
Key findings
01Muscle volume increased by 37% after six months of training and remained 23% above baseline one month after stopping.
02Intramuscular fat fraction decreased by approximately 19% after six months but rebounded to 3% above baseline one month after stopping.
03The study was designed to assess the feasibility of using multiparametric MRI to monitor these changes, not to prove the treatment works.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
The study had only four participants, all male, with no control group, so any observed changes cannot be confidently attributed to the training. The analysis was descriptive; no statistical tests were performed to determine if changes were significant. One participant did not attend the final follow-up scan, so post-training data is based on three people. The study did not measure functional outcomes like strength, spasticity, or quality of life, only imaging markers. Authors state that the magnitude of muscle changes might differ in women, but this was not tested. The study was a feasibility pilot for MRI monitoring, not a trial of efficacy for the FES cycling intervention.
Declared interests
One author (AP) is a cofounder and shareholder of two startups active in the field of exoskeletons for industrial and biomedical applications. No specific funding source for this study is mentioned in the provided text, though the study is part of a wider project.
The easy way to misread this
Do not interpret the 37% increase in muscle volume as proof that FES cycling works better than other interventions or no intervention. This was a pilot study with four men and no control group, designed to test if MRI can track changes, not to prove efficacy.