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Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography
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 we...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9408118/ https://www.ncbi.nlm.nih.gov/pubmed/36011944 http://dx.doi.org/10.3390/ijerph191610309 |
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author | Jeknić, Velimir Dopsaj, Milivoj Toskić, Lazar Koropanovski, Nenad |
author_facet | Jeknić, Velimir Dopsaj, Milivoj Toskić, Lazar Koropanovski, Nenad |
author_sort | Jeknić, Velimir |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-9408118 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-94081182022-08-26 Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography Jeknić, Velimir Dopsaj, Milivoj Toskić, Lazar Koropanovski, Nenad Int J Environ Res Public Health Article 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. MDPI 2022-08-19 /pmc/articles/PMC9408118/ /pubmed/36011944 http://dx.doi.org/10.3390/ijerph191610309 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Jeknić, Velimir Dopsaj, Milivoj Toskić, Lazar Koropanovski, Nenad Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography |
title | Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography |
title_full | Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography |
title_fullStr | Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography |
title_full_unstemmed | Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography |
title_short | Muscle Contraction Adaptations in Top-Level Karate Athletes Assessed by Tensiomyography |
title_sort | muscle contraction adaptations in top-level karate athletes assessed by tensiomyography |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9408118/ https://www.ncbi.nlm.nih.gov/pubmed/36011944 http://dx.doi.org/10.3390/ijerph191610309 |
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