Correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes

This study aimed to analyze preferred leg (PLs) and non-preferred leg (NPLs) isokinetic knee strength, lateral asymmetry ratios and to examine their correlation with static balance. Sixteen female taekwondo (TKD) athletes voluntarily participated in the study. Knee isokinetic extension (Ex) and flex...

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Autores principales:	Ali Kerim Yilmaz, Coskun Yilmaz, Muhammet Hakan Mayda, Emre Karaduman, Serhat Erail, Özgür Bostanci, Menderes Kabadayi
Formato:	article
Lenguaje:	EN ES PT
Publicado:	Universidad de León 2021
Materias:	combat sports martial arts taekwondo lateral asymmetry isokinetic knee strength balance Sports GV557-1198.995
Acceso en línea:	https://doaj.org/article/aebb592dd8484576b1eca4499411e4a3
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spelling	oai:doaj.org-article:aebb592dd8484576b1eca4499411e4a32021-11-21T11:16:55ZCorrelation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes2174-074710.18002/rama.v16i2.6486https://doaj.org/article/aebb592dd8484576b1eca4499411e4a32021-06-01T00:00:00Zhttp://revpubli.unileon.es/ojs/index.php/artesmarciales/article/view/6486https://doaj.org/toc/2174-0747This study aimed to analyze preferred leg (PLs) and non-preferred leg (NPLs) isokinetic knee strength, lateral asymmetry ratios and to examine their correlation with static balance. Sixteen female taekwondo (TKD) athletes voluntarily participated in the study. Knee isokinetic extension (Ex) and flexion (Flx) strength were measured in concentric / concentric (Con / Con) contractions at angular velocities of 60°/s, 180°/s, and 240°/s. Ipsilateral hamstring / quadriceps (H/Q) and bilateral (H/H and Q /Q) ratios were calculated. Static balances were determined by taking the center of body pressure in X (COPX) and Y (COPY) axis. Paired sample t-test and Pearson correlation tests were used in statistical analysis. When the isokinetic knee strength was examined, it was found that 60°/s angular velocity parameter was significantly different in Flx phase while 180°/s and 240°/s angular velocities were found to be significantly different in Ex phase in favor of PLs. There was no significance in bilateral and ipsilateral strength ratios of all angular velocities. There was a significant correlation between 240°/s HQ and COPX in terms of ipsilateral asymmetry ratios whereas a significant correlation was found between 60°/s HH and COPX in terms of bilateral asymmetry ratios. It was found that there were differences in strength between PL and NPLs, but no asymmetry was observed. There was no high level of correlation between lateral asymmetry ratios and balance in female TKD practitioners.Ali Kerim YilmazCoskun YilmazMuhammet Hakan MaydaEmre KaradumanSerhat ErailÖzgür BostanciMenderes KabadayiUniversidad de Leónarticlecombat sportsmartial artstaekwondolateral asymmetryisokinetic knee strengthbalanceSportsGV557-1198.995ENESPTRevista de Artes Marciales Asiáticas, Vol 16, Iss 2, Pp 67-79 (2021)
institution	DOAJ
collection	DOAJ
language	EN ES PT
topic	combat sports martial arts taekwondo lateral asymmetry isokinetic knee strength balance Sports GV557-1198.995
spellingShingle	combat sports martial arts taekwondo lateral asymmetry isokinetic knee strength balance Sports GV557-1198.995 Ali Kerim Yilmaz Coskun Yilmaz Muhammet Hakan Mayda Emre Karaduman Serhat Erail Özgür Bostanci Menderes Kabadayi Correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes
description	This study aimed to analyze preferred leg (PLs) and non-preferred leg (NPLs) isokinetic knee strength, lateral asymmetry ratios and to examine their correlation with static balance. Sixteen female taekwondo (TKD) athletes voluntarily participated in the study. Knee isokinetic extension (Ex) and flexion (Flx) strength were measured in concentric / concentric (Con / Con) contractions at angular velocities of 60°/s, 180°/s, and 240°/s. Ipsilateral hamstring / quadriceps (H/Q) and bilateral (H/H and Q /Q) ratios were calculated. Static balances were determined by taking the center of body pressure in X (COPX) and Y (COPY) axis. Paired sample t-test and Pearson correlation tests were used in statistical analysis. When the isokinetic knee strength was examined, it was found that 60°/s angular velocity parameter was significantly different in Flx phase while 180°/s and 240°/s angular velocities were found to be significantly different in Ex phase in favor of PLs. There was no significance in bilateral and ipsilateral strength ratios of all angular velocities. There was a significant correlation between 240°/s HQ and COPX in terms of ipsilateral asymmetry ratios whereas a significant correlation was found between 60°/s HH and COPX in terms of bilateral asymmetry ratios. It was found that there were differences in strength between PL and NPLs, but no asymmetry was observed. There was no high level of correlation between lateral asymmetry ratios and balance in female TKD practitioners.
format	article
author	Ali Kerim Yilmaz Coskun Yilmaz Muhammet Hakan Mayda Emre Karaduman Serhat Erail Özgür Bostanci Menderes Kabadayi
author_facet	Ali Kerim Yilmaz Coskun Yilmaz Muhammet Hakan Mayda Emre Karaduman Serhat Erail Özgür Bostanci Menderes Kabadayi
author_sort	Ali Kerim Yilmaz
title	Correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes
title_short	Correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes
title_full	Correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes
title_fullStr	Correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes
title_full_unstemmed	Correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes
title_sort	correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes
publisher	Universidad de León
publishDate	2021
url	https://doaj.org/article/aebb592dd8484576b1eca4499411e4a3
work_keys_str_mv	AT alikerimyilmaz correlationofbilateralandipsilateralstrengthratioswithbalanceinfemaletaekwondoathletes AT coskunyilmaz correlationofbilateralandipsilateralstrengthratioswithbalanceinfemaletaekwondoathletes AT muhammethakanmayda correlationofbilateralandipsilateralstrengthratioswithbalanceinfemaletaekwondoathletes AT emrekaraduman correlationofbilateralandipsilateralstrengthratioswithbalanceinfemaletaekwondoathletes AT serhaterail correlationofbilateralandipsilateralstrengthratioswithbalanceinfemaletaekwondoathletes AT ozgurbostanci correlationofbilateralandipsilateralstrengthratioswithbalanceinfemaletaekwondoathletes AT mendereskabadayi correlationofbilateralandipsilateralstrengthratioswithbalanceinfemaletaekwondoathletes
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Correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes

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