Triceps surae stretch and voluntary contraction alters maximal M-wave magnitude

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
Kylie J Tucker, Kemal S Türker

Abstract

Reliability of the motor response (M-wave) is fundamental in many reflex studies; however it has recently been shown to change during some investigations. The aim of this investigation was to determine if triceps surae stretch and voluntary contraction, or recording and analysis techniques, affect the maximal M-wave magnitude. The maximal M-wave was investigated in human gastrocnemius and soleus during different foot positions and during triceps surae contraction. Both bipolar and monopolar-recoding methods, and area and peak-to-peak (PTP) amplitude analysis methods were used. Maximal M-wave magnitude changed significantly between test muscle conditions, and is largest during dorsiflexion, probably due to changes in muscle bulk and recording electrode relationship. The maximal M-wave was up to 88% smaller when recorded by bipolar electrodes compared to monopolar electrodes, which is discussed in relation to signal cancellation. Area analysis provided more significant differences in M-wave magnitude between test muscle conditions than did PTP amplitude analysis, and the maximal M-wave shape changed significantly between test muscle conditions. This study suggests that maximal M-wave magnitude can vary depending on muscle conditi...Continue Reading

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Dec 13, 2005·Human Movement Science·Kylie J TuckerKemal S Türker

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Citations

Apr 3, 2009·The Journal of Physiological Sciences : JPS·Hikmat HadoushHiroshi Maejima
May 31, 2011·Medical Engineering & Physics·David A Gabriel
Nov 17, 2009·Brain Research·Vimal StanislausMaria Knikou
Dec 17, 2009·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Yung-Sheng ChenFang Wang
Jan 8, 2011·Gait & Posture·Yung-Sheng Chen, Shi Zhou
Apr 19, 2016·Reviews in the Neurosciences·Francesco Budini, Markus Tilp
Nov 28, 2014·Physiological Reports·Jessica McGuireDavid A Gabriel

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