Journal of Human Sport and Exercise

Presynaptic inhibition of spinal alpha-motoneurons in athletes adapted to different muscle activity

Roman Fomin, Dina Fomina

DOI: https://doi.org/10.4100/jhse.2009.41.03

Abstract

Changes in the presynaptic inhibition of spinal alpha-motoneurons were studied in athletes during motor activities of different types. In the state where muscles were at relative rest, the presynaptic inhibition of spinal alpha-motoneurons of the m. soleus was stronger in muscle samboists (athletes specializing in the martial art of sambo) and sprinters than in long-distance runners. In samboists performing repeated static loads, the presynaptic inhibition of spinal alpha-motoneurons became stronger from one trial to the next. Both technique training and strength training enhanced the presynaptic inhibition of spinal alpha-motoneurons, this enhancement being greater after strength training.


Keywords

Presynaptic inhibition; Spinal alpha-motoneurons; Athletes; Different muscle activity

References

Anisimova N.P., Gerasimenko Y.U.P., Khomma S., et al. Presynaptic Inhibition as a Mechanism Controlling the Interaction of Phasic and Tonic Proprioceptor Reflexes, Regulyatsiya sensornogo obespecheniya dvizhenii (Control of the Sensory Mechanisms of Motor Activity). Leningrad; 1987. 194 p.

Earles D.R., Dierking J.T., Robertson C.T., Koceja D.M. Pre- and Post-synaptic Control of Motoneuron Excitability in Athletes. Med. Sci. Sports Exerc. 2002 Nov;34(11):66-72. https://doi.org/10.1097/00005768-200211000-00012

Granit R. The Basis of Motor Control. London: Academic; 1970. 136 p.

Hultborn H., Meunier S., Morin C., Pierrot-Deseilligny E. Assessing Changes in Presynaptic Inhibition of Ia Fibers: A Study in Man and the Cat. J. Physiol. 389:729. https://doi.org/10.1113/jphysiol.1987.sp016680

McComas A.J. Skeletal Muscle: Form and Function. Champaign: Human Kinetics; 1996.

Nielsen J.B., Cohen L.G. The Olympic brain. Does corticospinal plasticity play a role in acquisition of skills required for high-performance sports? J Physiol. 2008 Jan 1;586(1):65-70. https://doi.org/10.1113/jphysiol.2007.142661

Platonov V.N. Sistema podgotovki sportsmenov v olimpiiskom sporte. Obshchaya teoriya i ee prakticheskie prilozheniya (The System of Training Athletes in Olympic Sports: General Theory and Implications for Practice). Kiev: Olimpiiskaya Literatura; 2004.

Remaud A., Guével A., Cornu C. Antagonist muscle coactivation and muscle inhibition: effects on external torque regulation and resistance training-induced adaptations. Neurophysiol Clin. 2007 Jan-Mar;37(1):1-14. https://doi.org/10.1016/j.neucli.2007.01.002

Roberts A., Li W.C., Soffe S.R. Roles for inhibition: studies on networks controlling swimming in young frog tadpoles. J Comp Physiol a Neuroethol Sens Neural Behav Physiol. 2008 Feb;194(2):185-93. https://doi.org/10.1007/s00359-007-0273-3

Solodkov A.S. Adaptation in Sport: Present State, Problems, Prospect. Fiziol. Chel. 2000; 26(6):87 [Hum. Physiol. (Eng. Transl.) 26(6)726.

Stein R.B., Thompson A.K. Muscle reflexes in motion: how, what, and why? Exerc Sport Sci Rev. 2006 Oct;34(4):145-53. https://doi.org/10.1249/01.jes.0000240024.37996.e5

Zenkov L.R., Ronkin M.A. Funktsional'naya diagnostika nervnykh boleznei. Rukovodstvo dlya vrachei (Functional Diagnosis of Neural Diseases: A Physician's Guide. 3rd ed.) Moscow: MEDpress-Inform; 2004.




DOI: https://doi.org/10.4100/jhse.2009.41.03





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