Cargando…

A Load–Velocity Relationship in Sprint?

The aims were to compare predicted maximal velocity from load–velocity relationships established with different resisted and assisted loads by different regression analyses to the measured maximal velocity during sprint running, and to compare maximal velocity measured between a robotic pulley syste...

Descripción completa

Detalles Bibliográficos
Autores principales: van den Tillaar, Roland, Gleadhill, Sam, Jiménez-Reyes, Pedro, Nagahara, Ryu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10531998/
https://www.ncbi.nlm.nih.gov/pubmed/37754968
http://dx.doi.org/10.3390/jfmk8030135
_version_ 1785111851737022464
author van den Tillaar, Roland
Gleadhill, Sam
Jiménez-Reyes, Pedro
Nagahara, Ryu
author_facet van den Tillaar, Roland
Gleadhill, Sam
Jiménez-Reyes, Pedro
Nagahara, Ryu
author_sort van den Tillaar, Roland
collection PubMed
description The aims were to compare predicted maximal velocity from load–velocity relationships established with different resisted and assisted loads by different regression analyses to the measured maximal velocity during sprint running, and to compare maximal velocity measured between a robotic pulley system and laser gun. Sixteen experienced male sprinters performed regular 50 m sprints, a 50 m with 5-kilogram-assisted sprint, and 10, 20, 30, and 30 m resisted sprints with, respectively, 65, 50, 25, and 10% calculated reduction in maximal velocity. Maximal velocity obtained by laser gun during the regular sprint was compared with predicted maximal velocity calculated from four trendlines (linear and polynomial based upon four resisted loads, and linear and polynomial based upon four resisted and one assisted load). Main findings demonstrate that the robotic pulley system and laser measure similar maximal velocities at all loads except at the load of 10% velocity reduction. Theoretical maximal velocity based upon calculated predictions were underestimated by 0.62–0.22 m/s (2.2–0.78 km/h; 6.7–2.3%) compared to measured maximal velocity. It was concluded that different regression analyses underestimated measured maximal velocity in regular sprinting and polynomial regression analysis (with resisted and assisted loads) estimation was closest to measured velocity (2.3%).
format Online
Article
Text
id pubmed-10531998
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-105319982023-09-28 A Load–Velocity Relationship in Sprint? van den Tillaar, Roland Gleadhill, Sam Jiménez-Reyes, Pedro Nagahara, Ryu J Funct Morphol Kinesiol Article The aims were to compare predicted maximal velocity from load–velocity relationships established with different resisted and assisted loads by different regression analyses to the measured maximal velocity during sprint running, and to compare maximal velocity measured between a robotic pulley system and laser gun. Sixteen experienced male sprinters performed regular 50 m sprints, a 50 m with 5-kilogram-assisted sprint, and 10, 20, 30, and 30 m resisted sprints with, respectively, 65, 50, 25, and 10% calculated reduction in maximal velocity. Maximal velocity obtained by laser gun during the regular sprint was compared with predicted maximal velocity calculated from four trendlines (linear and polynomial based upon four resisted loads, and linear and polynomial based upon four resisted and one assisted load). Main findings demonstrate that the robotic pulley system and laser measure similar maximal velocities at all loads except at the load of 10% velocity reduction. Theoretical maximal velocity based upon calculated predictions were underestimated by 0.62–0.22 m/s (2.2–0.78 km/h; 6.7–2.3%) compared to measured maximal velocity. It was concluded that different regression analyses underestimated measured maximal velocity in regular sprinting and polynomial regression analysis (with resisted and assisted loads) estimation was closest to measured velocity (2.3%). MDPI 2023-09-15 /pmc/articles/PMC10531998/ /pubmed/37754968 http://dx.doi.org/10.3390/jfmk8030135 Text en © 2023 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
van den Tillaar, Roland
Gleadhill, Sam
Jiménez-Reyes, Pedro
Nagahara, Ryu
A Load–Velocity Relationship in Sprint?
title A Load–Velocity Relationship in Sprint?
title_full A Load–Velocity Relationship in Sprint?
title_fullStr A Load–Velocity Relationship in Sprint?
title_full_unstemmed A Load–Velocity Relationship in Sprint?
title_short A Load–Velocity Relationship in Sprint?
title_sort load–velocity relationship in sprint?
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10531998/
https://www.ncbi.nlm.nih.gov/pubmed/37754968
http://dx.doi.org/10.3390/jfmk8030135
work_keys_str_mv AT vandentillaarroland aloadvelocityrelationshipinsprint
AT gleadhillsam aloadvelocityrelationshipinsprint
AT jimenezreyespedro aloadvelocityrelationshipinsprint
AT nagahararyu aloadvelocityrelationshipinsprint
AT vandentillaarroland loadvelocityrelationshipinsprint
AT gleadhillsam loadvelocityrelationshipinsprint
AT jimenezreyespedro loadvelocityrelationshipinsprint
AT nagahararyu loadvelocityrelationshipinsprint