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Jump-Squat and Half-Squat Exercises: Selective Influences on Speed-Power Performance of Elite Rugby Sevens Players

The aim of this study was to evaluate the relation between the maximum mean propulsive power (MPP) obtained in the loaded jump squat (JS) and half squat (HS) exercises and functional performances in vertical jumps, 40 m linear speed (VEL) and change-of-direction (COD) tests, using the median split t...

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Autores principales: Loturco, Irineu, Pereira, Lucas A., Moraes, José E., Kitamura, Katia, Cal Abad, César C., Kobal, Ronaldo, Nakamura, Fábio Y.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5256944/
https://www.ncbi.nlm.nih.gov/pubmed/28114431
http://dx.doi.org/10.1371/journal.pone.0170627
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author Loturco, Irineu
Pereira, Lucas A.
Moraes, José E.
Kitamura, Katia
Cal Abad, César C.
Kobal, Ronaldo
Nakamura, Fábio Y.
author_facet Loturco, Irineu
Pereira, Lucas A.
Moraes, José E.
Kitamura, Katia
Cal Abad, César C.
Kobal, Ronaldo
Nakamura, Fábio Y.
author_sort Loturco, Irineu
collection PubMed
description The aim of this study was to evaluate the relation between the maximum mean propulsive power (MPP) obtained in the loaded jump squat (JS) and half squat (HS) exercises and functional performances in vertical jumps, 40 m linear speed (VEL) and change-of-direction (COD) tests, using the median split technique. Twenty-two male rugby sevens players from the Brazilian National Olympic Team (Rio-2016) performed vertical jumping tests (squat and countermovement jumps [SJ and CMJ]), JS and HS exercises, COD speed test and sprinting velocity in 40 m, in this order. Based on the results of the MPP in the JS and HS exercises the participants were divided, using the median split, into four groups as follows: higher JS, lower JS, higher HS, and lower HS. Between-group differences in the functional tasks were detected via magnitude-based inferences. The athletes with higher MPP in the JS were capable of jumping higher and sprinting faster (including the COD speed test) than their weaker counterparts. This pattern was not observed in the HS exercise. To conclude, JS was shown to be more connected to sprinting, COD speed and jumping abilities than HS in elite rugby sevens players and should be preferred for assessing and possibly training elite athletes needing to improve speed-power related abilities.
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spelling pubmed-52569442017-02-06 Jump-Squat and Half-Squat Exercises: Selective Influences on Speed-Power Performance of Elite Rugby Sevens Players Loturco, Irineu Pereira, Lucas A. Moraes, José E. Kitamura, Katia Cal Abad, César C. Kobal, Ronaldo Nakamura, Fábio Y. PLoS One Research Article The aim of this study was to evaluate the relation between the maximum mean propulsive power (MPP) obtained in the loaded jump squat (JS) and half squat (HS) exercises and functional performances in vertical jumps, 40 m linear speed (VEL) and change-of-direction (COD) tests, using the median split technique. Twenty-two male rugby sevens players from the Brazilian National Olympic Team (Rio-2016) performed vertical jumping tests (squat and countermovement jumps [SJ and CMJ]), JS and HS exercises, COD speed test and sprinting velocity in 40 m, in this order. Based on the results of the MPP in the JS and HS exercises the participants were divided, using the median split, into four groups as follows: higher JS, lower JS, higher HS, and lower HS. Between-group differences in the functional tasks were detected via magnitude-based inferences. The athletes with higher MPP in the JS were capable of jumping higher and sprinting faster (including the COD speed test) than their weaker counterparts. This pattern was not observed in the HS exercise. To conclude, JS was shown to be more connected to sprinting, COD speed and jumping abilities than HS in elite rugby sevens players and should be preferred for assessing and possibly training elite athletes needing to improve speed-power related abilities. Public Library of Science 2017-01-23 /pmc/articles/PMC5256944/ /pubmed/28114431 http://dx.doi.org/10.1371/journal.pone.0170627 Text en © 2017 Loturco et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://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
Loturco, Irineu
Pereira, Lucas A.
Moraes, José E.
Kitamura, Katia
Cal Abad, César C.
Kobal, Ronaldo
Nakamura, Fábio Y.
Jump-Squat and Half-Squat Exercises: Selective Influences on Speed-Power Performance of Elite Rugby Sevens Players
title Jump-Squat and Half-Squat Exercises: Selective Influences on Speed-Power Performance of Elite Rugby Sevens Players
title_full Jump-Squat and Half-Squat Exercises: Selective Influences on Speed-Power Performance of Elite Rugby Sevens Players
title_fullStr Jump-Squat and Half-Squat Exercises: Selective Influences on Speed-Power Performance of Elite Rugby Sevens Players
title_full_unstemmed Jump-Squat and Half-Squat Exercises: Selective Influences on Speed-Power Performance of Elite Rugby Sevens Players
title_short Jump-Squat and Half-Squat Exercises: Selective Influences on Speed-Power Performance of Elite Rugby Sevens Players
title_sort jump-squat and half-squat exercises: selective influences on speed-power performance of elite rugby sevens players
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5256944/
https://www.ncbi.nlm.nih.gov/pubmed/28114431
http://dx.doi.org/10.1371/journal.pone.0170627
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