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The dose-response relationship between training load and aerobic fitness in academy rugby union players

Taylor, Richard J.; Sanders, Dajo; Myers, Tony; Abt, Grant; Taylor, Celia A.; Akubat, Ibrahim

Authors

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Dr Grant Abt G.Abt@hull.ac.uk
Reader in Sport and Exercise Physiology and Head of Department for Sport, Health and Exercise Science

Tony Myers

Celia A. Taylor

Richard J. Taylor

Dajo Sanders

Ibrahim Akubat

Abstract

© 2018 Human Kinetics, Inc. Purpose: To identify the dose-response relationship between measures of training load (TL) and changes in aerobic fitness in academy rugby union players. Method: Training data from 10 academy rugby union players were collected during a 6-wk in-season period. Participants completed a lactate-threshold test that was used to assess VO 2 max, velocity at VO 2 max, velocity at 2 mmol/L (lactate threshold), and velocity at 4 mmol/L (onset of lactate accumulation; vOBLA) as measures of aerobic fitness. Internal-TL measures calculated were Banister training impulse (bTRIMP), Edwards TRIMP, Lucia TRIMP, individualized TRIMP (iTRIMP), and session RPE (sRPE). External-TL measures calculated were total distance, PlayerLoad™, high-speed distance > 15 km/h, very-high-speed distance > 18 km/h, and individualized high-speed distance based on each player’s vOBLA. Results: A second-order-regression (quadratic) analysis found that bTRIMP (R 2 = .78, P = .005) explained 78% of the variance and iTRIMP (R 2 = .55, P = .063) explained 55% of the variance in changes in VO 2 max. All other HR-based internal-TL measures and sRPE explained less than 40% of variance with fitness changes. External TL explained less than 42% of variance with fitness changes. Conclusions: In rugby players, bTRIMP and iTRIMP display a curvilinear dose-response relationship with changes in maximal aerobic fitness.

Journal Article Type Article
Publication Date Feb 1, 2018
Journal International journal of sports physiology and performance
Print ISSN 1555-0265
Electronic ISSN 1555-0273
Publisher Human Kinetics
Peer Reviewed Peer Reviewed
Volume 13
Issue 2
Pages 163-169
DOI https://doi.org/10.1123/ijspp.2017-0121
Keywords Training impulse; GPS; Training load,; Blood lactate; Heart rate
Publisher URL http://journals.humankinetics.com/doi/10.1123/ijspp.2017-0121
Copyright Statement ©2017 University of Hull - Accepted author manuscript version reprinted, by permission, from International journal of sports physiology and performance, 2017, http://dx.doi.org/10.1123/ijspp.2017-0121]. © Human Kinetics, Inc.
Additional Information Accepted author manuscript version reprinted, by permission, from International journal of sports physiology and performance, 2017, http://dx.doi.org/10.1123/ijspp.2017-0121]. © Human Kinetics, Inc.

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