Relationship between physical performance testing results and peak running intensity during professional rugby league match play

Journal article


Duthie, Grant M., Thornton, Heidi R., Delaney, Jace A., McMahon, James T. and Benton, Dean T.. (2018). Relationship between physical performance testing results and peak running intensity during professional rugby league match play. Journal of Strength and Conditioning Research. 34(12), pp. 3506-3513. https://doi.org/10.1519/JSC.0000000000002273
AuthorsDuthie, Grant M., Thornton, Heidi R., Delaney, Jace A., McMahon, James T. and Benton, Dean T.
Abstract

The purpose of this study was to examine the relationship between individual athletes' physical characteristics and both the peak running intensities and the decline in peak running intensities during competition. Twenty-two professional rugby league athletes (age; 24.1 ± 4.0 years, body mass; 101.4 ± 9.5 kg) underwent a series of physical testing procedures. Peak running intensity was determined using a moving average technique, applied to the speed (m·min-1), acceleration/deceleration (m·s-2) and metabolic power (W·kg-1) during competition, across 10 different durations. The power law relationship was then established, yielding an intercept and slope for the movement variables. Mixed linear models were then used to determine the relationship between physical characteristics and intercept and slope values. There were large, positive relationships between a player’s maximal speed and both peak running speeds (ES = 0.56, 90% CI: 0.20 to 0.78) and metabolic power (0.57, 0.21 to 0.79) during competition. In contrast, there were large, negative associations between maximal speed and the rate of decline in running speed (-0.60, -0.81 to -0.27) and metabolic power (-0.65, -0.83 to -0.32) during competition. Similarly, there were negative associations between relative squat strength and the rate of decline in running speed (moderate: -0.41, -0.69 to -0.04) and metabolic power (large: -0.53, -0.77 to -0.17) during competition. The findings of this study demonstrate that a players running intensity during competition is underpinned by the individual athletes physiological qualities. Athletes demonstrating higher maximal speeds in testing were able to maintain higher running intensities over short durations, but had a greater decrease in running intensity as duration increased.

KeywordsGPS; physical performance; intensity; moving-average; team-sport
Year2018
JournalJournal of Strength and Conditioning Research
Journal citation34 (12), pp. 3506-3513
PublisherLippincott Williams & Wilkins
ISSN1064-8011
Digital Object Identifier (DOI)https://doi.org/10.1519/JSC.0000000000002273
Scopus EID2-s2.0-85066865196
Open accessPublished as green open access
Page range3506-3513
Research GroupSports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre
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OnlineDec 2020
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