Bilateral Deficit and Bilateral Performance: Relationship with Sprinting and Change of Direction in Elite Youth Soccer Players

The purpose of the study was to examine the differences in bilateral deficit (BLD) at different loadings during the half-squat jump (SJ) and horizontal countermovement jump (HCMJ) to determine if there is a relationship with linear sprint or change of direction (COD). The second goal was to check if...

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Main Authors: Giampiero Ascenzi, Bruno Ruscello, Cristoforo Filetti, Daniele Bonanno, Valter Di Salvo, F. Javier Nuñez, Alberto Mendez-Villanueva, Luis Suarez-Arrones
Format: Article
Language:English
Published: MDPI AG 2020-06-01
Series:Sports
Subjects:
Online Access:https://www.mdpi.com/2075-4663/8/6/82
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author Giampiero Ascenzi
Bruno Ruscello
Cristoforo Filetti
Daniele Bonanno
Valter Di Salvo
F. Javier Nuñez
Alberto Mendez-Villanueva
Luis Suarez-Arrones
author_facet Giampiero Ascenzi
Bruno Ruscello
Cristoforo Filetti
Daniele Bonanno
Valter Di Salvo
F. Javier Nuñez
Alberto Mendez-Villanueva
Luis Suarez-Arrones
author_sort Giampiero Ascenzi
collection DOAJ
description The purpose of the study was to examine the differences in bilateral deficit (BLD) at different loadings during the half-squat jump (SJ) and horizontal countermovement jump (HCMJ) to determine if there is a relationship with linear sprint or change of direction (COD). The second goal was to check if fast players were more powerful in SJ and HCMJ than slow players in bilateral performance (BP). Twenty-seven male youth soccer players participated in the study. Players were divided in two groups, faster and slower, according to their sprint performance (10 and 40 m). BLD average power with body weight (BW) and 25%BW were significantly higher than 50%BW (<i>p</i> < 0.01). BLD during HCMJ was significantly higher than BLD during SJ with BW, 25%BW and 50%BW (<i>p</i> < 0.01). There were no statistical relationships between BLD and sprint or COD performance (<i>p</i> > 0.05). Fast players showed significantly higher SJ power with all the different loads and HCMJ than slow players (<i>p</i> < 0.01), and fast players lost more time executing COD-90° than slow players (<i>p</i> < 0.01). There were no statistical differences between fast and slow players in BLD. BLD seems to be dependent on motor task, contraction type and load and could not be a proper measure to estimate sprint and COD performance. Faster players are confirmed to be more powerful players than slow players, and decrements in COD could be a key benchmark to identify deficit between linear and COD performance.
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spelling doaj.art-ea721b2cfd4e44c9808c9b0fe1f8f70c2023-11-20T02:46:01ZengMDPI AGSports2075-46632020-06-01868210.3390/sports8060082Bilateral Deficit and Bilateral Performance: Relationship with Sprinting and Change of Direction in Elite Youth Soccer PlayersGiampiero Ascenzi0Bruno Ruscello1Cristoforo Filetti2Daniele Bonanno3Valter Di Salvo4F. Javier Nuñez5Alberto Mendez-Villanueva6Luis Suarez-Arrones7Faculty of Sport, University of Pablo de Olavide (UPO), 41013 Sevilla, SpainItaly School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, “Tor Vergata” University, 00133 Rome, ItalyItaly School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, “Tor Vergata” University, 00133 Rome, ItalyDepartment Football Performance & Science, Aspire Academy, Doha 22287, QatarDepartment Football Performance & Science, Aspire Academy, Doha 22287, QatarPhysical Performance and Sport Research, Pablo de Olavide University, 41013 Sevilla, SpainQatar Football Association, Doha 22287, QatarPhysical Performance and Sport Research, Pablo de Olavide University, 41013 Sevilla, SpainThe purpose of the study was to examine the differences in bilateral deficit (BLD) at different loadings during the half-squat jump (SJ) and horizontal countermovement jump (HCMJ) to determine if there is a relationship with linear sprint or change of direction (COD). The second goal was to check if fast players were more powerful in SJ and HCMJ than slow players in bilateral performance (BP). Twenty-seven male youth soccer players participated in the study. Players were divided in two groups, faster and slower, according to their sprint performance (10 and 40 m). BLD average power with body weight (BW) and 25%BW were significantly higher than 50%BW (<i>p</i> < 0.01). BLD during HCMJ was significantly higher than BLD during SJ with BW, 25%BW and 50%BW (<i>p</i> < 0.01). There were no statistical relationships between BLD and sprint or COD performance (<i>p</i> > 0.05). Fast players showed significantly higher SJ power with all the different loads and HCMJ than slow players (<i>p</i> < 0.01), and fast players lost more time executing COD-90° than slow players (<i>p</i> < 0.01). There were no statistical differences between fast and slow players in BLD. BLD seems to be dependent on motor task, contraction type and load and could not be a proper measure to estimate sprint and COD performance. Faster players are confirmed to be more powerful players than slow players, and decrements in COD could be a key benchmark to identify deficit between linear and COD performance.https://www.mdpi.com/2075-4663/8/6/82performance analysisBLDbilateral testingunilateral testingpower
spellingShingle Giampiero Ascenzi
Bruno Ruscello
Cristoforo Filetti
Daniele Bonanno
Valter Di Salvo
F. Javier Nuñez
Alberto Mendez-Villanueva
Luis Suarez-Arrones
Bilateral Deficit and Bilateral Performance: Relationship with Sprinting and Change of Direction in Elite Youth Soccer Players
Sports
performance analysis
BLD
bilateral testing
unilateral testing
power
title Bilateral Deficit and Bilateral Performance: Relationship with Sprinting and Change of Direction in Elite Youth Soccer Players
title_full Bilateral Deficit and Bilateral Performance: Relationship with Sprinting and Change of Direction in Elite Youth Soccer Players
title_fullStr Bilateral Deficit and Bilateral Performance: Relationship with Sprinting and Change of Direction in Elite Youth Soccer Players
title_full_unstemmed Bilateral Deficit and Bilateral Performance: Relationship with Sprinting and Change of Direction in Elite Youth Soccer Players
title_short Bilateral Deficit and Bilateral Performance: Relationship with Sprinting and Change of Direction in Elite Youth Soccer Players
title_sort bilateral deficit and bilateral performance relationship with sprinting and change of direction in elite youth soccer players
topic performance analysis
BLD
bilateral testing
unilateral testing
power
url https://www.mdpi.com/2075-4663/8/6/82
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