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Determinants of countermovement jump performance: a kinetic and kinematic analysis

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journal contribution
posted on 09.02.2015, 16:29 by Stuart A. McErlain-Naylor, Mark King, Matthew Pain
This study aimed to investigate the contributions of kinetic and kinematic parameters to inter-individual variation in countermovement jump (CMJ) performance. Two-dimensional kinematic data and ground reaction forces during a CMJ were recorded for 18 males of varying jumping experience. Ten kinetic and eight kinematic parameters were determined for each performance, describing peak lower-limb joint torques and powers, concentric knee extension rate of torque development and CMJ technique. Participants also completed a series of isometric knee extensions to measure the rate of torque development and peak torque. CMJ height ranged from 0.38 to 0.73 m (mean 0.55 ± 0.09 m). CMJ peak knee power, peak ankle power and take-off shoulder angle explained 74% of this observed variation. CMJ kinematic (58%) and CMJ kinetic (57%) parameters explained a much larger proportion of the jump height variation than the isometric parameters (18%), suggesting that coachable technique factors and the joint kinetics during the jump are important determinants of CMJ performance. Technique, specifically greater ankle plantar-flexion and shoulder flexion at take-off (together explaining 58% of the CMJ height variation), likely influences the extent to which maximal muscle capabilities can be utilised during the jump.

History

School

  • Sport, Exercise and Health Sciences

Published in

JOURNAL OF SPORTS SCIENCES

Volume

32

Issue

19

Pages

1805 - 1812 (8)

Citation

MCERLAIN-NAYLOR, S., KING, M.A. and PAIN, M.T.G., 2014. Determinants of countermovement jump performance: a kinetic and kinematic analysis. Journal of Sports Sciences, 32 (19), pp.1805-1812.

Publisher

© Taylor & Francis

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2014

Notes

This is an Accepted Manuscript of an article published in Journal of Sports Sciences on 29 May 2014, available online: http://www.tandfonline.com/10.1080/02640414.2014.924055

ISSN

0264-0414

Language

en

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