Interleaved neuromuscular electrical stimulation: Motor unit recruitment overlap

ABSTRACT 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 pulse...

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Published in:Muscle & nerve 2017-04, Vol.55 (4), p.490-499
Main Authors: Wiest, Matheus J., Bergquist, Austin J., Schimidt, Helen L., Jones, Kelvin E., Collins, David F.
Format: Article
Language:English
Subjects:
Adult
Electric Stimulation
Electromyography
Female
Humans
interleaved
Linear Models
Male
motor unit
Muscle Contraction - physiology
Muscle, Skeletal - physiology
neuromuscular electrical stimulation
Neuromuscular Junction - physiology
NMES
recruitment overlap
Recruitment, Neurophysiological - physiology
Torque
twitch torque
Walking - physiology
Young Adult
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cited_by cdi_FETCH-LOGICAL-c3869-6bbcfe5082b9e08bc8deb7192f3f01423aac34ac04515ce824c1f26ab07d64413
cites cdi_FETCH-LOGICAL-c3869-6bbcfe5082b9e08bc8deb7192f3f01423aac34ac04515ce824c1f26ab07d64413
container_end_page 499
container_issue 4
container_start_page 490
container_title Muscle & nerve
container_volume 55
creator Wiest, Matheus J.
Bergquist, Austin J.
Schimidt, Helen L.
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Collins, David F.
description ABSTRACT 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
doi_str_mv 10.1002/mus.25249
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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. 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source Wiley-Blackwell Read & Publish Collection
subjects Adult
Electric Stimulation
Electromyography
Female
Humans
interleaved
Linear Models
Male
motor unit
Muscle Contraction - physiology
Muscle, Skeletal - physiology
neuromuscular electrical stimulation
Neuromuscular Junction - physiology
NMES
recruitment overlap
Recruitment, Neurophysiological - physiology
Torque
twitch torque
Walking - physiology
Young Adult
title Interleaved neuromuscular electrical stimulation: Motor unit recruitment overlap
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