The findings in this study demonstrate that a skin-surface muscle mechanomyography sensor is an accurate proxy for electrically-evoked muscle contraction torques when directly measured during isometric dynamometry in individuals with SCI. The novel application of the MC sensor during FES-evoked muscle contractions suggested its possible application for real-world tasks (e.g., prolonged sit-to-stand, stepping,) where muscle forces during fatiguing activities cannot be directly measured.

https://www.ncbi.nlm.nih.gov/pubmed/28708068