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Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players

The purpose of this study was to compare countermovement jump force–time measures between strength-matched male and female soccer players. Males (n = 11) and females (n = 11) were strength-matched via isometric mid-thigh pull testing, whereby peak force values were normalised to body mass. Subjects...

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Autores principales: Thomas, Christopher, Jones, Paul A., Dos’Santos, Thomas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8949185/
https://www.ncbi.nlm.nih.gov/pubmed/35329039
http://dx.doi.org/10.3390/ijerph19063352
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author Thomas, Christopher
Jones, Paul A.
Dos’Santos, Thomas
author_facet Thomas, Christopher
Jones, Paul A.
Dos’Santos, Thomas
author_sort Thomas, Christopher
collection PubMed
description The purpose of this study was to compare countermovement jump force–time measures between strength-matched male and female soccer players. Males (n = 11) and females (n = 11) were strength-matched via isometric mid-thigh pull testing, whereby peak force values were normalised to body mass. Subjects performed three maximal-effort countermovement jumps (CMJs) on a force platform from which a range of kinetic and kinematic variables were calculated via forward dynamics. Thereafter, differences in gross measures were examined via independent t-tests, while differences in force–, power–, velocity–, and displacement–time curves throughout the entire CMJ were analysed using statistical parametric mapping (SPM). Jump height, reactive strength index modified, propulsion mean force, propulsion impulse, and propulsion mean velocity were all greater for males (d = 1.50 to 3.07). Relative force– and velocity–time curves were greater for males at 86–93% (latter half of the concentric phase) and 85–100% (latter half of the concentric phase) of normalized movement time, respectively. Time to take-off, braking phase time, braking mean velocity and impulse, propulsion phase time and centre of mass displacement were similar between males and females (d = −0.23 to 0.97). This research demonstrates the strength of SPM to identify changes between entire force-time curves. Continued development and the use of SPM analysis could present the opportunity for a refined comparison of strength-matched male and female CMJ performance with the analysis of entire force–time curves.
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spelling pubmed-89491852022-03-26 Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players Thomas, Christopher Jones, Paul A. Dos’Santos, Thomas Int J Environ Res Public Health Article The purpose of this study was to compare countermovement jump force–time measures between strength-matched male and female soccer players. Males (n = 11) and females (n = 11) were strength-matched via isometric mid-thigh pull testing, whereby peak force values were normalised to body mass. Subjects performed three maximal-effort countermovement jumps (CMJs) on a force platform from which a range of kinetic and kinematic variables were calculated via forward dynamics. Thereafter, differences in gross measures were examined via independent t-tests, while differences in force–, power–, velocity–, and displacement–time curves throughout the entire CMJ were analysed using statistical parametric mapping (SPM). Jump height, reactive strength index modified, propulsion mean force, propulsion impulse, and propulsion mean velocity were all greater for males (d = 1.50 to 3.07). Relative force– and velocity–time curves were greater for males at 86–93% (latter half of the concentric phase) and 85–100% (latter half of the concentric phase) of normalized movement time, respectively. Time to take-off, braking phase time, braking mean velocity and impulse, propulsion phase time and centre of mass displacement were similar between males and females (d = −0.23 to 0.97). This research demonstrates the strength of SPM to identify changes between entire force-time curves. Continued development and the use of SPM analysis could present the opportunity for a refined comparison of strength-matched male and female CMJ performance with the analysis of entire force–time curves. MDPI 2022-03-12 /pmc/articles/PMC8949185/ /pubmed/35329039 http://dx.doi.org/10.3390/ijerph19063352 Text en © 2022 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
Thomas, Christopher
Jones, Paul A.
Dos’Santos, Thomas
Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players
title Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players
title_full Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players
title_fullStr Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players
title_full_unstemmed Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players
title_short Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players
title_sort countermovement jump force–time curve analysis between strength-matched male and female soccer players
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8949185/
https://www.ncbi.nlm.nih.gov/pubmed/35329039
http://dx.doi.org/10.3390/ijerph19063352
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