Oxygen Consumption While Walking With Multijoint Neuromuscular Electrical Stimulation After Stroke.

The study involved only one participant, so results cannot be generalized to other stroke survivors. Maximal oxygen uptake (VO2 max) was not measured, so estimates of metabolic reserve were based on literature values rather than individual data. Walking speeds differed between conditions (self-selected), making direct metabolic comparisons complex and reliant on literature norms for matched speeds. The stimulation pattern was specific to the muscles targeted and the control algorithm used; other configurations might yield different results. The device was implanted, which differs from surface NMES in terms of selectivity and comfort, limiting applicability to non-implanted technologies.

The study was supported by the National Institutes of Health (NIH) and the U.S. Government. The implanted device had an Investigational Device Exemption from the FDA for research use only. No commercial conflicts of interest were explicitly detailed in the text beyond the funding sources.

Do not assume this implant will double walking speed or improve efficiency for your patients. This is a single case report with a specific implanted device and muscle set. The increased oxygen consumption means the patient works harder overall, which may not be sustainable for long-distance community walking despite the lower cost per meter.