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Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography

Author

Listed:
  • Velimir Jeknić

    (Palms Sports, Abu Dhabi P.O. Box 111188, United Arab Emirates
    Department of Sport, Abu Dhabi Police College, Abu Dhabi P.O. Box 111188, United Arab Emirates)

  • Milivoj Dopsaj

    (Faculty of Sport and Physical Education, University of Belgrade, 11030 Belgrade, Serbia)

  • Lazar Toskić

    (Faculty of Sport and Physical Education, University in Priština-Kosovska Mitrovica, 38218 Leposavić, Serbia
    Faculty of Sport, University “Union-Nikola Tesla”, 11000 Belgrade, Serbia)

  • Nenad Koropanovski

    (Department of Criminalistics, University of Criminal Investigation and Police Studies, 11080 Belgrade, Serbia)

Abstract

Background: This paper aimed to compare the involuntary stimulated neuromuscular response of thigh muscles in top-level karate athletes and recreational groups. Methods: The study included 13 male karate athletes (KAs) and 14 non-athlete male individuals (NAs). Tensiomyographic (TMG) measurements were obtained from the rectus femoris (RF), vastus medialis (VM), vastus lateralis (VL), biceps femoris (BF) and semitendinosus (ST). Results: Statistically significant differences were observed between KAs and NAs in knee extensor/flexor delay time (Td), contraction time (Tc), total contraction time (Tct), maximal radial displacement of the muscle belly (Dm) and rate of muscle tension development (RMTD). On a group level, KA dominant-leg extensors and flexors and also non-dominant-leg knee flexors had significant differences when compared to NA. Tct is a TMG parameter in which the KAs and NAs differ the most in the case of the knee extensors, while flexor muscles differ the most in the RMTD parameter. Conclusions: The lower Tct values indicate an improved ability of top-level karateka to make fast contractions of the agonist muscles. KAs’ higher RMTD values suggest on strength characteristics needed in breaking actions of the antagonist muscles. Existence of contraction-relaxation-contraction neuromuscular pattern in the RF muscle suggests on implementation of training strategies that involves both rapid muscle contractions and relaxations.

Suggested Citation

  • Velimir Jeknić & Milivoj Dopsaj & Lazar Toskić & Nenad Koropanovski, 2022. "Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography," IJERPH, MDPI, vol. 19(16), pages 1-12, August.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:16:p:10309-:d:892155
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    References listed on IDEAS

    as
    1. Jorge López-Fernández & Jorge García-Unanue & Javier Sánchez-Sánchez & Enrique Colino & Enrique Hernando & Leonor Gallardo, 2020. "Bilateral Asymmetries Assessment in Elite and Sub-Elite Male Futsal Players," IJERPH, MDPI, vol. 17(9), pages 1-11, May.
    2. Paweł Przybylski & Arkadiusz Janiak & Piotr Szewczyk & Dariusz Wieliński & Katarzyna Domaszewska, 2021. "Morphological and Motor Fitness Determinants of Shotokan Karate Performance," IJERPH, MDPI, vol. 18(9), pages 1-14, April.
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    Cited by:

    1. Lazar Pajović & Lazar Toskić & Veroljub Stanković & Ljubiša Lilić & Borislav Cicović, 2023. "Muscle Contractile Properties Measured by the Tensiomyography (TMG) Method in Top-Level Football Players of Different Playing Positions: The Case of Serbian Super League," IJERPH, MDPI, vol. 20(2), pages 1-11, January.

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