Vertical jump testing in rugby league : a rationale for calculating take-off momentum

McMahon, JJ ORCID: https://orcid.org/0000-0001-9952-7846, Lake, JP, Ripley, NJ and Comfort, Paul ORCID: https://orcid.org/0000-0002-1131-8626 2020, 'Vertical jump testing in rugby league : a rationale for calculating take-off momentum' , Journal of Applied Biomechanics , pp. 1-5.

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Access Information: Accepted author manuscript version reprinted, by permission, from Journal of Applied Biomechanics, 2020, https://doi-org.salford.idm.oclc.org/10.1123/jab.2020-0100. © Human Kinetics, Inc.

Abstract

The purpose of this study was to determine the usefulness of calculating jump take-off momentum in rugby league (RL) by exploring its relationship with sprint momentum, due to the latter being an important attribute of this sport. Twenty-five male RL players performed 3 maximal-effort countermovement jumps on a force platform and 3 maximal effort 20-m sprints (with split times recorded). Jump take-off momentum and sprint momentum (between 0 and 5, 5 and 10, and 10 and 20 m) were calculated (mass multiplied by velocity) and their relationship determined. There was a very large positive relationship between both jump take-off and 0- to 5-m sprint momentum (r = .781, P < .001) and jump take-off and 5- to 10-m sprint momentum (r = .878, P < .001). There was a nearly perfect positive relationship between jump take-off and 10- to 20-m sprint momentum (r = .920, P < .001). Jump take-off and sprint momentum demonstrated good–excellent reliability and very large–nearly perfect associations (61%–85% common variance) in an RL cohort, enabling prediction equations to be created. Thus, it may be practically useful to calculate jump take-off momentum as part of routine countermovement jump testing of RL players and other collision-sport athletes to enable the indirect monitoring of sprint momentum.

Item Type: Article
Schools: Schools > School of Health and Society > Centre for Health Sciences Research
Journal or Publication Title: Journal of Applied Biomechanics
Publisher: Human Kinetics
ISSN: 1065-8483
Related URLs:
Depositing User: Dr John J McMahon
Date Deposited: 19 Aug 2020 11:12
Last Modified: 19 Aug 2020 12:07
URI: http://usir.salford.ac.uk/id/eprint/57973

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