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The association between reactive strength index and reactive strength index modified with approach jump performance
Jumping performance is one of the key components of volleyball game, thus evaluating jumping ability through different biomechanical variables offers opportunity for performance optimization. The aim of this study was to assess the associations between reactive strength index (RSI), reactive strengt...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8853549/ https://www.ncbi.nlm.nih.gov/pubmed/35176119 http://dx.doi.org/10.1371/journal.pone.0264144 |
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author | Pleša, Jernej Kozinc, Žiga Smajla, Darjan Šarabon, Nejc |
author_facet | Pleša, Jernej Kozinc, Žiga Smajla, Darjan Šarabon, Nejc |
author_sort | Pleša, Jernej |
collection | PubMed |
description | Jumping performance is one of the key components of volleyball game, thus evaluating jumping ability through different biomechanical variables offers opportunity for performance optimization. The aim of this study was to assess the associations between reactive strength index (RSI), reactive strength index modified (RSI(mod)) and approach jump performance in male volleyball players. Forty volleyball players performed drop jump (DJ) form 40 cm high box, bilateral and unilateral countermovement jumps (CMJ) and approach jump. RSI in DJ was calculated as the ratio between jump height and ground contact time, while the RSI in CMJ tasks (RSI(mod)) was calculated as ratio between jump height and jump time. Our results indicate that the relationships among different RSI variants and approach jump in volleyball players are moderate to strong (r = 0.42–0.73), with the highest correlations being observed for RSI(mod) from bilateral CMJ (r = 0.676–0.727). Those observations are in line with the principle of movement specificity, which suggests that the best performance indicator should be the task that best resembles the demands of the sport-specific movements. Further research is needed to reveal more about the potential of implementing these findings for training optimization through monitoring RSI and RSI(mod) values. |
format | Online Article Text |
id | pubmed-8853549 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-88535492022-02-18 The association between reactive strength index and reactive strength index modified with approach jump performance Pleša, Jernej Kozinc, Žiga Smajla, Darjan Šarabon, Nejc PLoS One Research Article Jumping performance is one of the key components of volleyball game, thus evaluating jumping ability through different biomechanical variables offers opportunity for performance optimization. The aim of this study was to assess the associations between reactive strength index (RSI), reactive strength index modified (RSI(mod)) and approach jump performance in male volleyball players. Forty volleyball players performed drop jump (DJ) form 40 cm high box, bilateral and unilateral countermovement jumps (CMJ) and approach jump. RSI in DJ was calculated as the ratio between jump height and ground contact time, while the RSI in CMJ tasks (RSI(mod)) was calculated as ratio between jump height and jump time. Our results indicate that the relationships among different RSI variants and approach jump in volleyball players are moderate to strong (r = 0.42–0.73), with the highest correlations being observed for RSI(mod) from bilateral CMJ (r = 0.676–0.727). Those observations are in line with the principle of movement specificity, which suggests that the best performance indicator should be the task that best resembles the demands of the sport-specific movements. Further research is needed to reveal more about the potential of implementing these findings for training optimization through monitoring RSI and RSI(mod) values. Public Library of Science 2022-02-17 /pmc/articles/PMC8853549/ /pubmed/35176119 http://dx.doi.org/10.1371/journal.pone.0264144 Text en © 2022 Pleša et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Pleša, Jernej Kozinc, Žiga Smajla, Darjan Šarabon, Nejc The association between reactive strength index and reactive strength index modified with approach jump performance |
title | The association between reactive strength index and reactive strength index modified with approach jump performance |
title_full | The association between reactive strength index and reactive strength index modified with approach jump performance |
title_fullStr | The association between reactive strength index and reactive strength index modified with approach jump performance |
title_full_unstemmed | The association between reactive strength index and reactive strength index modified with approach jump performance |
title_short | The association between reactive strength index and reactive strength index modified with approach jump performance |
title_sort | association between reactive strength index and reactive strength index modified with approach jump performance |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8853549/ https://www.ncbi.nlm.nih.gov/pubmed/35176119 http://dx.doi.org/10.1371/journal.pone.0264144 |
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