Electromyographic parameters in fatiguing exercises performed with different types of resistance
DOI:
https://doi.org/10.1590/1809-2950/15008423032016Abstract
The present study sought to investigate the electromyographic parameters of muscle fatigue during dynamic exercise conducted with variable resistance (elastic) and fixed resistance (pulley). Ten trained men participated voluntarily in the study. Two maximum voluntary isometric contractions (MVIC) of the elbow flexors were performed for 5 seconds and a two minutes interval rest was given between reps. Then, the volunteers performed unilateral elbow flexion repetitions until the exhaustion using fixed and elastic resistance with a pre-established rhythm of two seconds for each phase of the movement. Constant resistance was carried out at the pulley at 30% of MVIC. For the elastic resistance, load control was based on the subjective perception of the participant's effort. The exercise order was randomized, and electromyography signal of the biceps brachii muscle was recorded during contractions. From the electromyographic signal related to every movement, linear regression lines were drawn for root mean square (RMS) variables and median power frequency (MPF). The inclination of the lines normalized by the linear coefficient of regression equations were compared using the paired t-test. No significant differences between the types of resistance (elastic and pulley) were found. During elbow flexion exercise performed with elastic resistance and pulley, electromyographic parameters of fatigue did not differ. Effort perception during the exercise with an elastic implement does not influence the electromyographic signal pattern (RMS and MPF).Downloads
References
Fleck SJ, Kraemer WJ. Fundamentos do treinamento de
força muscular. 3. ed. Porto Alegre: Artmed; 2006.
Andersen LL, Andersen CH, Mortensen OS, Poulsen OM,
Bjornlund IBT, Zebis MK. Muscle activation and perceived
loading during rehabilitation exercises: comparison
of dumbbells and elastic resistance. Phys Ther. 2010;
(4):538-49.
Colado JC, Garcia-Masso X, Pellicer M, Alakhdar Y, Benavent
J, Cabeza-Ruiz R. A comparison of elastic tubing and isotonic
resistance exercises. Int J Sports Med. 2010;31(11):810-7.
Colado JC, Triplett NT. Effects of a short-term resistance
program using elastic bands versus weight machines for
sedentary middle-aged women. J Strength Cond Res.
;22(5):1441-8.
Colado JC, Triplett NT, Tella V, Saucedo P, Abellán J.
Effects of aquatic resistance training on health and
fitness in postmenopausal women. Eur J Appl Physiol.
;106(1):113-22.
Moritani T, Muro M. Motor unit activity and surface
electromyogram power spectrum during increasing
force of contraction. Eur J Appl Physiol Occup Physiol.
;56(3):260-5.
Houtman CJ, Stegeman DF, Van Dijk JP, Zwarts MJ. Changes in
muscle fiber conduction velocity indicate recruitment of distinct
motor unit populations. J Appl Physiol. 2003;95(3):1045-54.
Farina D, Ferguson RA, Macaluso A, De Vito G. Correlation of
average muscle fiber conduction velocity measured during cycling
exercise with myosin heavy chain composition, lactate threshold,
and VO2max. J Electromyogr Kinesiol. 2007;17(4):393-400.
Gerleman DG, Cook TM. Instrumentation in manual of surface
electromyography for use in the occupational setting.
Washington: DHHS Publication; 1989. p. 81-126.
Bonato P, Gagliati G, Knaflitz M. Analysis of myoelectric
signals recorded during dynamic contractions. IEEE Eng Med
Biol Mag. 1996;15(6):102-11.
Farina D, Merletti R. Methods for estimating muscle fibre
conduction velocity from surface electromyographic signals.
Med Biol Eng Comput. 2004;42(4):432-45.
Cannon J, Kay D, Tarpenning KM, Marino FE. Comparative
effects of resistance training on peak isometric torque,
muscle hypertrophy, voluntary activation and surface EMG
between young and elderly women. Clin Physiol Funct
Imaging. 2007;27(2):91-100.
Melchiorri G, Rainoldi A. Muscle fatigue induced by two
different resistances: elastic tubing versus weight machines.
J Electromyogr Kinesiol. 2011;21(6):954-9.
Calatayud J, Borreani S, Colado JC, Martin F, Tella V, Andersen
LL. Bench press and push-up at comparable levels of muscle
activity results in similar strength gains. J Strength Cond Res.
; 29(1):246-53.
Colado JC, Garcia-Masso X, Triplett TN, Flandez J, Borreani S,
Tella V. Concurrent validation of the OMNI-resistance exercise
scale of perceived exertion with Thera-band resistance
bands. J Strength Cond Res. 2012;26(11):3018-24.
Hermens HJ, Freriks B, Disselhorst-Klug C, Rau G.
Development of recommendations for SEMG sensors and
sensor placement procedures. J Electromyogr Kinesiol.
;10(5):361-74.
De Luca, CJ. The use of surface electromyography in
biomechanics. J Appl Biom. 1997;13:135-63.
Aagaard P, Simonsen EB, Andersen JL, Magnusson P, DyhrePoulsen P. Increased rate of force development and neural
drive of human skeletal muscle following resistance training.
J Appl Physiol. 2002;93(4):1318-26.
Lindstrom L, Petersen I. Power spectrum analysis of EMG
signals and its application. In: Desmedt JE, editor. Computeraided eletromyography: progress in clinical neurophysiology.
Basel: Karger; 1970. v.10.
De Luca CJ. Physiology and mathematics of myoelectric
signal. IEEE Trans Biomed Eng. 1979;26(6):313-25.
Sundstrup E, Jakobsen MD, Andersen CH, Zebis MK,
Mortensen OS, Andersen LL. Muscle activation strategies
during strength training with heavy loading vs repetitions to
failure. J Strength Cond Res. 2012;26(7):1897-903.
Jakobsen MD, Sundstrup E, Andersen CH, Aagaard P,
Andersen LL. Muscle activity during leg strengthening exercise
using free weights and elastic resistance: effects of ballistic vs
controlled contractions. Hum Mov Sci. 2013;32(1):65-78.
Stone MH, Collins D, Plisk S, Haff G, Stone ME. Training
principles: Evaluation of modes and methods of resistance
training. Strength Cond J. 2000;22(3):65-76.
Downloads
Published
Issue
Section
License
Copyright (c) 2016 Fisioterapia e Pesquisa
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
