PMID: 8971491Jan 1, 1996Paper

Reproducibility of kinetics of electromyogram spectrum parameters during dynamic exercise

European Journal of Applied Physiology and Occupational Physiology
D GametF Goubel

Abstract

During incremental exercise on a cycle ergometer a study was made of the reproducibility of changes in electromyographic activity (EMG) of human quadriceps muscles. Seven subjects performed three periods of incremental exercise either every 2 weeks (G1: four subjects) or 6 weeks (G2: three subjects). Each test was normalized with respect to the maximal aerobic power (MAP) of the subject. It consisted of a quasilinear increase in mechanical power (from 20% to 100% MAP) during 8 min. For rectus femoris muscle activity, changes in total power spectrum (PEMG) and in mean power frequency (MPF) were fitted by a 3rd order polynomial function (named profile) and normalized with respect to the maximal value for PEMG and to the mean value for MPF. A curvilinear increase was found for PEMG. The MPF kinetics varied from one subject to another. These changes were either a continuous increase, or a continuous decrease, or an increase followed by a decrease. Only for G2, was MAP determined before each test in order to update the limits of the test. A good reproducibility of PEMG was shown by its mean magnitude [95.88%, (SD 3.92)] and by computing a mean correlation coefficient between profiles two by two [r2 = 0.948 (SD 0.028) n = 21]. Intrac...Continue Reading

References

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Citations

Feb 18, 1999·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·K MasudaS Katsuta
Dec 2, 2010·Journal of Sports Sciences·Felipe P CarpesCarlos B Mota
Aug 11, 2010·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Yumna Albertus-KajeeMichael Lambert
Apr 24, 2007·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Sylvain DorelFrançois Hug
Aug 30, 2005·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·David LaplaudLaurent Grélot
Jun 21, 2017·Sports Biomechanics·Tatiane PiuccoDarren Stefanyshyn
Jan 19, 2008·Medicine and Science in Sports and Exercise·Jamie Hugo MacdonaldSamuele M Marcora
Dec 2, 2005·Journal of Neurophysiology·Vladimir M ZatsiorskyMark L Latash
May 10, 2011·Medicine and Science in Sports and Exercise·Luke A KellySebastien Racinais
Sep 25, 2019·Journal of Oral Rehabilitation·Naomi KoshiMakoto Inoue

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