Facilitation of quadriceps activation is impaired following eccentric exercise
- PMID: 22882137
- DOI: 10.1111/j.1600-0838.2012.01512.x
Facilitation of quadriceps activation is impaired following eccentric exercise
Abstract
Contracting the knee flexor muscles immediately before a maximum voluntary contraction (MVC) of knee extension increases the maximal force that the extensor muscles can exert. It is hypothesized that this phenomenon can be impaired by muscle fiber damage following eccentric exercise [delayed onset muscle soreness (DOMS)]. This study investigates the effect of eccentric exercise and DOMS on knee extension MVC immediately following a reciprocal-resisted knee flexion contraction. Electromyography (EMG) was recorded from the knee extensors and flexors of 12 healthy men during knee extension MVCs performed in a reciprocal (maximal knee extension preceded by resisted knee flexion), and nonreciprocal condition (preceded by relaxation of the knee flexors). At baseline, knee extension MVC force was greater during the reciprocal condition (P < 0.001), whereas immediately after, 24 and 48 h after eccentric exercise, the MVC force was not different between conditions. Similarly, at baseline, the EMG amplitude of the quadriceps during the MVC was larger for the reciprocal condition (P < 0.001). However, immediately after, 24 and 48 h postexercise the EMG amplitude was similar between conditions. In conclusion, eccentric exercise abolished the facilitation of force production for the knee extensors, which normally occurs when maximum knee extension is preceded by activation of the knee flexors.
Keywords: EMG; eccentric exercise; maximum voluntary contraction; reciprocal inhibition.
© 2012 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
Similar articles
-
Eccentric exercise and delayed onset muscle soreness of the quadriceps induce adjustments in agonist-antagonist activity, which are dependent on the motor task.Exp Brain Res. 2012 Feb;216(3):385-95. doi: 10.1007/s00221-011-2942-2. Epub 2011 Nov 18. Exp Brain Res. 2012. PMID: 22094715 Free PMC article.
-
Eccentric exercise increases EMG amplitude and force fluctuations during submaximal contractions of elbow flexor muscles.J Appl Physiol (1985). 2007 Sep;103(3):979-89. doi: 10.1152/japplphysiol.01310.2006. Epub 2007 Jun 28. J Appl Physiol (1985). 2007. PMID: 17600154
-
Muscle fascicle behavior during eccentric cycling and its relation to muscle soreness.Med Sci Sports Exerc. 2015 Apr;47(4):708-17. doi: 10.1249/MSS.0000000000000473. Med Sci Sports Exerc. 2015. PMID: 25116087
-
Changes in central and peripheral neuromuscular fatigue indices after concentric versus eccentric contractions of the knee extensors.Eur J Appl Physiol. 2018 Apr;118(4):805-816. doi: 10.1007/s00421-018-3816-0. Epub 2018 Feb 6. Eur J Appl Physiol. 2018. PMID: 29411127
-
Muscle damage induced by electrical stimulation.Eur J Appl Physiol. 2011 Oct;111(10):2427-37. doi: 10.1007/s00421-011-2086-x. Epub 2011 Aug 3. Eur J Appl Physiol. 2011. PMID: 21811767 Review.
Cited by
-
Effect of Large Versus Small Range of Motion in the Various Intensities of Eccentric Exercise-Induced Muscle Pain and Strength.Int J Exerc Sci. 2021 Apr 1;14(7):1-18. eCollection 2021. Int J Exerc Sci. 2021. PMID: 34055176 Free PMC article.
-
Physiological and Neural Adaptations to Eccentric Exercise: Mechanisms and Considerations for Training.Biomed Res Int. 2015;2015:193741. doi: 10.1155/2015/193741. Epub 2015 Oct 12. Biomed Res Int. 2015. PMID: 26543850 Free PMC article. Review.
-
Effect of eccentric exercise-induced muscle damage on electromyographyic activity of quadriceps in untrained healthy females.Med J Islam Repub Iran. 2014 Dec 24;28:154. eCollection 2014. Med J Islam Repub Iran. 2014. PMID: 25695012 Free PMC article.
MeSH terms
LinkOut - more resources
Full Text Sources
Medical