Interleaved neuromuscular electrical stimulation: Motor unit recruitment overlap
| Autor: | Kelvin E. Jones, Matheus Joner Wiest, Helen L. Schimidt, Austin J. Bergquist, David F. Collins |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
medicine.diagnostic_test Physiology 030229 sport sciences Electromyography Stimulus (physiology) Neuromuscular junction Motor unit 03 medical and health sciences Cellular and Molecular Neuroscience 0302 clinical medicine medicine.anatomical_structure Tibialis anterior muscle Physiology (medical) Motor unit recruitment medicine Neurology (clinical) medicine.symptom 030217 neurology & neurosurgery Common peroneal nerve Muscle contraction Biomedical engineering |
| Zdroj: | Muscle & Nerve. 55:490-499 |
| ISSN: | 0148-639X |
| DOI: | 10.1002/mus.25249 |
| Popis: | Introduction In this study, we quantified the "overlap" between motor units recruited by single pulses of neuromuscular electrical stimulation (NMES) delivered over the tibialis anterior muscle (mNMES) and the common peroneal nerve (nNMES). We then quantified the torque produced when pulses were alternated between the mNMES and nNMES sites at 40 Hz ("interleaved" NMES; iNMES). Methods Overlap was assessed by comparing torque produced by twitches evoked by mNMES, nNMES, and both delivered together, over a range of stimulus intensities. Trains of iNMES were delivered at the intensity that produced the lowest overlap. Results Overlap was lowest (5%) when twitches evoked by both mNMES and nNMES produced 10% peak twitch torque. iNMES delivered at this intensity generated 25% of maximal voluntary dorsiflexion torque (11 Nm). Discussion Low intensity iNMES leads to low overlap and produces torque that is functionally relevant to evoke dorsiflexion during walking. Muscle Nerve 55: 490-499, 2017. |
| Databáze: | OpenAIRE |
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