Differences in the recruitment curves obtained with monopolar and bipolar electrode configurations in the quadriceps femoris.
Details
Serval ID
serval:BIB_B901A9B736FD
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Differences in the recruitment curves obtained with monopolar and bipolar electrode configurations in the quadriceps femoris.
Journal
Muscle & nerve
ISSN
1097-4598 (Electronic)
ISSN-L
0148-639X
Publication state
Published
Issued date
06/2016
Peer-reviewed
Oui
Volume
54
Number
1
Pages
118-131
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Abstract
We sought to verify whether the stimulation intensity at which M-wave amplitude reaches a plateau actually corresponds to full motor unit activation in monopolar and bipolar configurations.
M-waves and twitches were evoked using femoral nerve stimulation of gradually increasing intensity in 21 subjects. Recruitment curves corresponding to the amplitude of the first phase (AmpliFIRST ) and peak-to-peak amplitude (AmpliPP ) of the M-wave were obtained in the vastus lateralis, vastus medialis, and rectus femoris in monopolar and bipolar configurations.
In all muscles, bipolar M-waves and twitches reached plateau at a significantly lower stimulus intensity compared with monopolar M-waves (P < 0.05). The different behavior of monopolar and bipolar M-waves with stimulus intensity was found for both AmpliFIRST and AmpliPP .
In a bipolar configuration, the stimulus intensity at which M-waves plateau should be increased by at least 10%-20% to achieve complete motor unit recruitment. Muscle Nerve 54: 118-131, 2016.
M-waves and twitches were evoked using femoral nerve stimulation of gradually increasing intensity in 21 subjects. Recruitment curves corresponding to the amplitude of the first phase (AmpliFIRST ) and peak-to-peak amplitude (AmpliPP ) of the M-wave were obtained in the vastus lateralis, vastus medialis, and rectus femoris in monopolar and bipolar configurations.
In all muscles, bipolar M-waves and twitches reached plateau at a significantly lower stimulus intensity compared with monopolar M-waves (P < 0.05). The different behavior of monopolar and bipolar M-waves with stimulus intensity was found for both AmpliFIRST and AmpliPP .
In a bipolar configuration, the stimulus intensity at which M-waves plateau should be increased by at least 10%-20% to achieve complete motor unit recruitment. Muscle Nerve 54: 118-131, 2016.
Keywords
Adult, Electric Stimulation, Electrodes/classification, Electromyography, Femoral Nerve/physiology, Healthy Volunteers, Humans, Knee/innervation, Male, Muscle Contraction/physiology, Quadriceps Muscle/physiology, Recruitment, Neurophysiological/physiology, Statistics, Nonparametric, Young Adult, bipolar recording, femoral nerve stimulation, monopolar recording, motor unit recruitment, plateau stimulus intensity, recruitment curve
Pubmed
Web of science
Create date
05/01/2016 10:51
Last modification date
21/08/2019 6:36
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