Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/45283
Title: Effect of high-load and high-volume resistance exercise on the tensiomyographic twitch response of biceps brachii
Authors: García Manso, Juan Manuel 
Rodríguez-Matoso, Darío
Sarmiento Montesdeoca, Samuel 
de Saa, Yves
Vaamonde, Diana
Rodríguez-Ruiz, David 
Da Silva-Grigoletto, Marzo Edir
UNESCO Clasification: 241106 Fisiología del ejercicio
Keywords: Fatigue
Muscle performance
Tensiomyography
Issue Date: 2012
Publisher: 1050-6411
Journal: Journal of Electromyography and Kinesiology 
Abstract: The purpose of the present study was to assess the ability of TMG in detecting mechanical fatigue induced by two different resistance exercises on biceps brachii: high-volume (HV), and high-load (HL). Sixteen healthy subjects (age 25.1 ± 2.6 years; body mass 79.9 ± 8.9 kg; height 179 ± 7.4 cm) performed arm-curl in two different protocols (HV: 8 × 15 × 10 kg, HL: 5 × 3 × 30 kg). Tensiomyography was used to assess muscle response to both exercise protocols. The contractile capacity of biceps brachii significantly varied by means of the effects of potentiation and fatigue mechanisms that take place at different exercise phases. The most significant changes correspond to values of maximum radial displacement of muscle belly (Dm), sustained contraction time (Ts), relaxation time (Tr), and contraction velocity (Vc). The behavior of these parameters is, in general, similar in both exercise protocols, but they show subtle differences among them. During the first set, in both protocols, values for Vc increase, along with a decrease in Tr, Ts, and Dm values. Fatigue onset was evident from changes in such parameters, with HL being the first in showing these mechanisms. Tensiomyography has been shown to be highly sensitive in detecting fatigue-induced changes.
URI: http://hdl.handle.net/10553/45283
ISSN: 1050-6411
DOI: 10.1016/j.jelekin.2012.01.005
Source: Journal of Electromyography and Kinesiology[ISSN 1050-6411],v. 22, p. 612-619
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