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The Biomechanical Characterization of the Turning Phase during a 180° Change of Direction

The aim of this study was to characterize the turning phase during a modified 505 test. Forty collegiate basketball students, divided into faster and slower performers and high-playing-level and low-playing-level groups, were evaluated for the force-time characteristics (braking and/or propulsive ph...

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Autores principales: Santoro, Enrico, Tessitore, Antonio, Liu, Chiang, Chen, Chi-Hsien, Khemtong, Chutimon, Mandorino, Mauro, Lee, Yi-Hua, Condello, Giancarlo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8196559/
https://www.ncbi.nlm.nih.gov/pubmed/34063934
http://dx.doi.org/10.3390/ijerph18115519
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author Santoro, Enrico
Tessitore, Antonio
Liu, Chiang
Chen, Chi-Hsien
Khemtong, Chutimon
Mandorino, Mauro
Lee, Yi-Hua
Condello, Giancarlo
author_facet Santoro, Enrico
Tessitore, Antonio
Liu, Chiang
Chen, Chi-Hsien
Khemtong, Chutimon
Mandorino, Mauro
Lee, Yi-Hua
Condello, Giancarlo
author_sort Santoro, Enrico
collection PubMed
description The aim of this study was to characterize the turning phase during a modified 505 test. Forty collegiate basketball students, divided into faster and slower performers and high-playing-level and low-playing-level groups, were evaluated for the force-time characteristics (braking and/or propulsive phase) of the penultimate foot contact (PFC), final foot contact (FFC), and first accelerating foot contact (AFC), and for completion time and approach velocity. Based on the composition of the AFC, trials were classified as braking/propulsive or only propulsive. Regression analysis for the prediction of completion time was performed. The AFC contributed to reacceleration through shorter contact times and step length, and lower braking force production (p < 0.05). Faster performers and the high-playing-level group demonstrated (p < 0.05): lower completion times, higher approach velocities, longer steps length in the PFC and FFC, greater braking forces and impulses in the PFC; greater braking and propulsive forces, braking impulses, lower contact times in the FFC; greater braking and propulsive horizontal forces, horizontal impulses, lower contact times and vertical impulses in the AFC. Kinetic variables from only the FFC and AFC and approach velocity predicted 75% (braking/propulsive trials) and 76.2% (only-propulsive trials) of completion times. The characterization of the turning phase demonstrated the specific contribution of each foot contact and the possible implications for training prescription.
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spelling pubmed-81965592021-06-13 The Biomechanical Characterization of the Turning Phase during a 180° Change of Direction Santoro, Enrico Tessitore, Antonio Liu, Chiang Chen, Chi-Hsien Khemtong, Chutimon Mandorino, Mauro Lee, Yi-Hua Condello, Giancarlo Int J Environ Res Public Health Article The aim of this study was to characterize the turning phase during a modified 505 test. Forty collegiate basketball students, divided into faster and slower performers and high-playing-level and low-playing-level groups, were evaluated for the force-time characteristics (braking and/or propulsive phase) of the penultimate foot contact (PFC), final foot contact (FFC), and first accelerating foot contact (AFC), and for completion time and approach velocity. Based on the composition of the AFC, trials were classified as braking/propulsive or only propulsive. Regression analysis for the prediction of completion time was performed. The AFC contributed to reacceleration through shorter contact times and step length, and lower braking force production (p < 0.05). Faster performers and the high-playing-level group demonstrated (p < 0.05): lower completion times, higher approach velocities, longer steps length in the PFC and FFC, greater braking forces and impulses in the PFC; greater braking and propulsive forces, braking impulses, lower contact times in the FFC; greater braking and propulsive horizontal forces, horizontal impulses, lower contact times and vertical impulses in the AFC. Kinetic variables from only the FFC and AFC and approach velocity predicted 75% (braking/propulsive trials) and 76.2% (only-propulsive trials) of completion times. The characterization of the turning phase demonstrated the specific contribution of each foot contact and the possible implications for training prescription. MDPI 2021-05-21 /pmc/articles/PMC8196559/ /pubmed/34063934 http://dx.doi.org/10.3390/ijerph18115519 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Santoro, Enrico
Tessitore, Antonio
Liu, Chiang
Chen, Chi-Hsien
Khemtong, Chutimon
Mandorino, Mauro
Lee, Yi-Hua
Condello, Giancarlo
The Biomechanical Characterization of the Turning Phase during a 180° Change of Direction
title The Biomechanical Characterization of the Turning Phase during a 180° Change of Direction
title_full The Biomechanical Characterization of the Turning Phase during a 180° Change of Direction
title_fullStr The Biomechanical Characterization of the Turning Phase during a 180° Change of Direction
title_full_unstemmed The Biomechanical Characterization of the Turning Phase during a 180° Change of Direction
title_short The Biomechanical Characterization of the Turning Phase during a 180° Change of Direction
title_sort biomechanical characterization of the turning phase during a 180° change of direction
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8196559/
https://www.ncbi.nlm.nih.gov/pubmed/34063934
http://dx.doi.org/10.3390/ijerph18115519
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