Vertical jump testing in rugby league: A rationale for calculating take-off momentum
Document Type
Journal Article
Publication Title
Journal of Applied Biomechanics
Volume
36
Issue
6
First Page
370
Last Page
374
PubMed ID
32796137
Publisher
Human Kinetics
School
School of Medical and Health Sciences
RAS ID
35382
Abstract
© 2020 Human Kinetics Publishers Inc.. All rights reserved. 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 collisionsport athletes to enable the indirect monitoring of sprint momentum.
DOI
10.1123/JAB.2020-0100
Access Rights
subscription content
Comments
McMahon, J. J., Lake, J. P., Ripley, N. J., & Comfort, P. (2020). Vertical jump testing in rugby league: A rationale for calculating take-off momentum. Journal of Applied Biomechanics, 36(6), 370-374. https://doi.org/10.1123/JAB.2020-0100