Long-term training-induced changes in sprinting speed and sprint momentum in elite rugby union players

Journal article


Barr, Matthew, Sheppard, Jeremy, Gabbett, Tim J. and Newton, Robert 2014. Long-term training-induced changes in sprinting speed and sprint momentum in elite rugby union players. Journal of Strength and Conditioning Research. 28 (10), pp. 2724 - 2731. https://doi.org/10.1519/JSC.0000000000000364
AuthorsBarr, Matthew, Sheppard, Jeremy, Gabbett, Tim J. and Newton, Robert
Abstract

Speed and sprint momentum are considered to be important physical qualities for rugby. The purpose of the study was to understand the development of these qualities in senior and junior international rugby players. In part 1 of the study, a group of senior (n = 38) and junior (n = 31) players were tested for speed over 40 m. Initial sprint velocity (ISV), maximal sprint velocity (MSV), initial sprint momentum (ISM), and maximal sprint momentum (MSM) were calculated using 10-m splits. In part 2 of the study, a group of junior (n = 12) and senior (n = 15) players were tracked over a 2-year period for body mass, ISV, MSV, ISM, and MSM. In part 1, senior backs and forwards were not found to have significantly greater ISV and MSV than junior players but were found to have greater ISM and MSM. Forwards were found to have significantly greater ISM and MSM than backs but significantly lower ISV and MSV than backs. In part 2, no significant differences were found over the 2 years between senior and junior players, but greater effect sizes for juniors were generally found when compared with seniors for improvements in ISV (d = 0.73 vs. 0.79), MSV (d = 1.09 vs. 0.68), ISM (d = 0.96 vs. 0.54), and MSM (d = 1.15 vs. 0.50). Sprint momentum is a key discriminator between senior and junior players, and large changes can be made by junior players as they transition into senior rugby. Speed appears to peak for players in their early 20s but sprint momentum appears to be more trainable.

Year2014
JournalJournal of Strength and Conditioning Research
Journal citation28 (10), pp. 2724 - 2731
PublisherLippincott Williams and Wilkins
ISSN1533-4287
Digital Object Identifier (DOI)https://doi.org/10.1519/JSC.0000000000000364
Scopus EID2-s2.0-84920394739
Page range2724 - 2731
Research GroupSports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre
Place of publicationUnited States of America
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https://acuresearchbank.acu.edu.au/item/87v8w/long-term-training-induced-changes-in-sprinting-speed-and-sprint-momentum-in-elite-rugby-union-players

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