Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Jeknić, Velimir, Dopsaj, Milivoj, Toskić, Lazar, Koropanovski, Nenad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
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
_version_ 1784774529040515072
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
work_keys_str_mv AT jeknicvelimir musclecontractionadaptationsintoplevelkarateathletesassessedbytensiomyography
AT dopsajmilivoj musclecontractionadaptationsintoplevelkarateathletesassessedbytensiomyography
AT toskiclazar musclecontractionadaptationsintoplevelkarateathletesassessedbytensiomyography
AT koropanovskinenad musclecontractionadaptationsintoplevelkarateathletesassessedbytensiomyography