History dependence of the electromyogram: Implications for isometric steady-state EMG parameters following a lengthening or shortening contraction

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
Alexis A JonesWalter Herzog

Abstract

Residual force enhancement (RFE) and force depression (FD) refer to an increased or decreased force following an active lengthening or shortening contraction, respectively, relative to the isometric force produced at the same activation level and muscle length. Our intent was to determine if EMG characteristics differed in the RFE or FD states compared with a purely isometric reference contraction for maximal and submaximal voluntary activation of the adductor pollicis muscle. Quantifying these alterations to EMG in history-dependent states allows for more accurate modeling approaches for movement control in the future. For maximal voluntary contractions (MVC), RFE was 6-15% (P<0.001) and FD was 12-19% (P<0.001). The median frequency of the EMG was not different between RFE, FD and isometric reference contractions for the 100% and 40% MVC intensities (P>0.05). However, root mean square EMG (EMGRMS) amplitude for the submaximal contractions was higher in the FD and lower in the RFE state, respectively (P<0.05). For maximal contractions, EMGRMS was lower for the FD state but was the same for the RFE state compared to the isometric reference contractions (P>0.05). Neuromuscular efficiency (NME; force/EMG) was lower in the force de...Continue Reading

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Citations

Jan 25, 2018·Journal of Applied Biomechanics·Neil ChapmanRudi Meir
Nov 2, 2018·Journal of Applied Physiology·Jeremy D SeedPhilip J Millar
Mar 10, 2018·European Journal of Applied Physiology·Ian C SmithWalter Herzog
Jan 18, 2019·Journal of Applied Physiology·Jackey ChenGeoffrey A Power
Nov 7, 2019·Medicine and Science in Sports and Exercise·Haley V GabelGeoffrey A Power
Jul 1, 2017·Journal of Applied Physiology·Luis PeñaililloKazunori Nosaka
Jul 1, 2018·European Journal of Applied Physiology·Graham Z MacDonaldGeoffrey A Power
Jun 21, 2020·The Journal of Experimental Biology·Jackey ChenGeoffrey A Power
Nov 21, 2018·Experimental Brain Research·Caleb T SypkesGeoffrey A Power
Oct 11, 2020·Scandinavian Journal of Medicine & Science in Sports·Avery HinksGeoffrey A Power
Sep 19, 2020·Journal of Strength and Conditioning Research·Kevin E CaronGeoffrey A Power
Oct 27, 2020·Journal of Strength and Conditioning Research·Kevin E CaronGeoffrey A Power
Jun 4, 2021·European Journal of Applied Physiology·Benjamin KozlowskiGeoffrey A Power
Jun 2, 2021·Journal of Sport and Health Science·Daiani de CamposHeiliane de Brito Fontana
Aug 3, 2021·Physiological Reports·Florian K PaternosterWolfgang Seiberl

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