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Ground Reaction Force and Valgus Knee Loading during Landing after a Block in Female Volleyball Players

A non-contact anterior cruciate ligament (ACL) injury is both a serious and very common problem in volleyball. The aim of the study was to determine the association between stick, step-back, and run-back landings after a block and select risk factors of ACL injuries for female professional volleybal...

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Autores principales: Zahradnik, David, Uchytil, Jaroslav, Farana, Roman, Jandacka, Daniel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Akademia Wychowania Fizycznego w Katowicach 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4096083/
https://www.ncbi.nlm.nih.gov/pubmed/25031674
http://dx.doi.org/10.2478/hukin-2014-0008
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author Zahradnik, David
Uchytil, Jaroslav
Farana, Roman
Jandacka, Daniel
author_facet Zahradnik, David
Uchytil, Jaroslav
Farana, Roman
Jandacka, Daniel
author_sort Zahradnik, David
collection PubMed
description A non-contact anterior cruciate ligament (ACL) injury is both a serious and very common problem in volleyball. The aim of the study was to determine the association between stick, step-back, and run-back landings after a block and select risk factors of ACL injuries for female professional volleyball players. The research sample involved fourteen female professional volleyball players. Two force plates were used to determine ground reaction forces. Eight infrared cameras were employed to collect the kinematic data. The one-factor repeated-measures analysis of variance, where the landing type was the factor, was used for comparing the valgus moment and ground reaction force on the right lower limb. ANOVA showed that the type of landing has a main effect on the valgus moment on the right lower limb (F) = 5.96, p = 0.019df = 1.18, partial η(2) = 0.239 and SP = 0.693). Furthermore, it did not show a main effect on the vertical reaction force on the right lower limb ((F)=2.77, p=0.090, df=1.55, partial η(2)= 0.128 and SP=0.448). The highest valgus moment occurred during the run-back landing. This moment, however, did not have any effect within the first 100 ms after initial contact with the ground, but rather upon the subsequent motion carried out when stepping back off the net. A comparison between a run-back landing and a step-back landing showed relevant higher values of vertical ground reaction forces during the run-back landing.
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spelling pubmed-40960832014-07-16 Ground Reaction Force and Valgus Knee Loading during Landing after a Block in Female Volleyball Players Zahradnik, David Uchytil, Jaroslav Farana, Roman Jandacka, Daniel J Hum Kinet Research Article A non-contact anterior cruciate ligament (ACL) injury is both a serious and very common problem in volleyball. The aim of the study was to determine the association between stick, step-back, and run-back landings after a block and select risk factors of ACL injuries for female professional volleyball players. The research sample involved fourteen female professional volleyball players. Two force plates were used to determine ground reaction forces. Eight infrared cameras were employed to collect the kinematic data. The one-factor repeated-measures analysis of variance, where the landing type was the factor, was used for comparing the valgus moment and ground reaction force on the right lower limb. ANOVA showed that the type of landing has a main effect on the valgus moment on the right lower limb (F) = 5.96, p = 0.019df = 1.18, partial η(2) = 0.239 and SP = 0.693). Furthermore, it did not show a main effect on the vertical reaction force on the right lower limb ((F)=2.77, p=0.090, df=1.55, partial η(2)= 0.128 and SP=0.448). The highest valgus moment occurred during the run-back landing. This moment, however, did not have any effect within the first 100 ms after initial contact with the ground, but rather upon the subsequent motion carried out when stepping back off the net. A comparison between a run-back landing and a step-back landing showed relevant higher values of vertical ground reaction forces during the run-back landing. Akademia Wychowania Fizycznego w Katowicach 2014-04-09 /pmc/articles/PMC4096083/ /pubmed/25031674 http://dx.doi.org/10.2478/hukin-2014-0008 Text en © Editorial Committee of Journal of Human Kinetics This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Research Article
Zahradnik, David
Uchytil, Jaroslav
Farana, Roman
Jandacka, Daniel
Ground Reaction Force and Valgus Knee Loading during Landing after a Block in Female Volleyball Players
title Ground Reaction Force and Valgus Knee Loading during Landing after a Block in Female Volleyball Players
title_full Ground Reaction Force and Valgus Knee Loading during Landing after a Block in Female Volleyball Players
title_fullStr Ground Reaction Force and Valgus Knee Loading during Landing after a Block in Female Volleyball Players
title_full_unstemmed Ground Reaction Force and Valgus Knee Loading during Landing after a Block in Female Volleyball Players
title_short Ground Reaction Force and Valgus Knee Loading during Landing after a Block in Female Volleyball Players
title_sort ground reaction force and valgus knee loading during landing after a block in female volleyball players
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4096083/
https://www.ncbi.nlm.nih.gov/pubmed/25031674
http://dx.doi.org/10.2478/hukin-2014-0008
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