High-density surface electromyography provides reliable estimates of motor unit behavior

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology
E Martinez-ValdesDario Farina

Abstract

To assess the intra- and inter-session reliability of estimates of motor unit behavior and muscle fiber properties derived from high-density surface electromyography (HDEMG). Ten healthy subjects performed submaximal isometric knee extensions during three recording sessions (separate days) at 10%, 30%, 50% and 70% of their maximum voluntary effort. The discharge timings of motor units of the vastus lateralis and medialis muscles were automatically identified from HDEMG by a decomposition algorithm. We characterized the number of detected motor units, their discharge rates, the coefficient of variation of their inter-spike intervals (CoVisi), the action potential conduction velocity and peak-to-peak amplitude. Reliability was assessed for each motor unit characteristics by intra-class correlation coefficient (ICC). Additionally, a pulse-to-noise ratio (PNR) was calculated, to verify the accuracy of the decomposition. Good to excellent reliability within and between sessions was found for all motor unit characteristics at all force levels (ICCs>0.8), with the exception of CoVisi that presented poor reliability (ICC<0.6). PNR was high and similar for both muscles with values ranging between 45.1 and 47.6dB (accuracy>95%). Motor un...Continue Reading

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Citations

Apr 28, 2016·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Miguel A MañanasJoan F Alonso
May 20, 2016·International Urogynecology Journal·Yun PengYingchun Zhang
Jan 26, 2017·Medicine and Science in Sports and Exercise·Eduardo Martinez-ValdesDario Farina
Feb 9, 2018·Journal of Applied Physiology·Eduardo Martinez-ValdesDario Farina
Nov 24, 2017·Frontiers in Human Neuroscience·Yi-Ching ChenIng-Shiou Hwang
May 24, 2018·Scandinavian Journal of Medicine & Science in Sports·P A PincheiraG A Lichtwark
Jul 20, 2018·Journal of Applied Physiology·Alessandro Del VecchioFrancesco Felici
Jul 6, 2018·Medicine and Science in Sports and Exercise·Eduardo Martinez-ValdesDeborah Falla
Dec 4, 2019·Journal of Neural Engineering·Carina Marconi GermerLeonardo Abdala Elias
Mar 19, 2020·The Journal of Physiology·Eduardo Martinez-ValdesDeborah Falla
Aug 25, 2018·Computational and Mathematical Methods in Medicine·Innokentiy KastalskiyVictor Kazantsev
Nov 30, 2016·Frontiers in Human Neuroscience·Jacques AbboudMartin Descarreaux
Sep 16, 2018·International Journal of Environmental Research and Public Health·Ranavolo AlbertoSergio Iavicoli
Jun 10, 2020·Scandinavian Journal of Medicine & Science in Sports·Stefano NuccioPaola Sbriccoli
Jan 5, 2021·International Journal of Rehabilitation Research. Internationale Zeitschrift Für Rehabilitationsforschung. Revue Internationale De Recherches De Réadaptation·Imre CikajloAleš Holobar
Mar 12, 2021·Advanced Materials Technologies·Brendan B MurphyFlavia Vitale

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