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Article

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

1
Directorate of Psychology and Sport, University of Salford, Salford M6 6PU, UK
2
Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester M15 6BH, UK
*
Author to whom correspondence should be addressed.
Academic Editor: Martin Burtscher
Int. J. Environ. Res. Public Health 2022, 19(6), 3352; https://doi.org/10.3390/ijerph19063352
Received: 23 November 2021 / Revised: 3 March 2022 / Accepted: 3 March 2022 / Published: 12 March 2022
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. View Full-Text
Keywords: gender differences; waveform analysis; isometric mid-thigh pull; statistical parametric mapping gender differences; waveform analysis; isometric mid-thigh pull; statistical parametric mapping
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MDPI and ACS Style

Thomas, C.; Jones, P.A.; Dos’Santos, T. Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players. Int. J. Environ. Res. Public Health 2022, 19, 3352. https://doi.org/10.3390/ijerph19063352

AMA Style

Thomas C, Jones PA, Dos’Santos T. Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players. International Journal of Environmental Research and Public Health. 2022; 19(6):3352. https://doi.org/10.3390/ijerph19063352

Chicago/Turabian Style

Thomas, Christopher, Paul A. Jones, and Thomas Dos’Santos. 2022. "Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players" International Journal of Environmental Research and Public Health 19, no. 6: 3352. https://doi.org/10.3390/ijerph19063352

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