Oxygen consumption while walking with multi-joint neuromuscular electrical stimulation after stroke: a case report.

07:00 EST 6th March 2020 | BioPortfolio

Summary of "Oxygen consumption while walking with multi-joint neuromuscular electrical stimulation after stroke: a case report."

This case study evaluated the effect of implanted multi-joint neuromuscular electrical stimulation (NMES) gait assistance on oxygen consumption relative to walking without NMES after stroke. The participant walked slowly with an asymmetric gait pattern after stroke. He completed repeated six-minute walk tests at a self- selected walking speed with and without hip, knee and ankle stimulation assistance. His walking speed with NMES more than doubled from 0.28±0.01 m/s to 0.58±0.04 m/s while average step length and cadence increased by 0.12 m and 24 steps/min, respectively. As a result, energy cost of walking with NMES decreased by 0.19 ml O2/kg/m as compare to walking without stimulation while oxygen consumption increased by 1.1 METs (3.9 ml O2/kg/min). These metabolic demands are similar to those reported for stroke survivors capable of walking at equivalent speeds without stimulation, suggesting the increase in oxygen consumption and decreased energy cost result from improved efficiency of faster walking facilitated by NMES. While the effect of NMES on gait economy has implications for community walking within the user's metabolic reserves, this case study's results should be interpreted with caution and the hypothesis that multi-joint NMES improves metabolic efficiency should be tested in a wide population of stroke survivors with varied deficits.


Journal Details

This article was published in the following journal.

Name: American journal of physical medicine & rehabilitation
ISSN: 1537-7385


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