Daily Changes of Resting Metabolic Rate in Elite Rugby Union Players

Hudson, James and Cole, Matthew and Morton, James and Stewart, Claire and Close, Graeme (2019) Daily Changes of Resting Metabolic Rate in Elite Rugby Union Players. Medicine & Science in Sports & Exercise. ISSN 0195-9131

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Abstract

INTRODUCTION: Preparation for competitive contact sport has been extensively researched, however there are limited data to guide players as to how the demands of their sport affect the energy requirements of recovery. We aimed to provide novel data on changes in resting metabolic rate (RMR) in contact sport athletes and relate these to the physical demands of training and competition.
METHODS: 22 Elite professional Premiership Rugby Union players were recruited to the study. Indirect calorimetry (Vyntus CPX canopy, CareFusion) was used to measure RMR each morning of the competitive match week, in a fasted, rested state. External loads for training and match play were monitored and recorded using global positioning systems (Catapult Innovations, Australia), whilst internal loads were tracked using rate of perceived exertion scales. Collisions were reviewed and recorded by expert video analysts for contacts in general play (breakdown and tackle area) or the set piece (scrum or maul).
RESULTS: There were significant (p=0.005) mean increases in RMR of ≈231kcal the morning after (GD+1) and 3 days after the game (GD+3), compared with the day before the match (GD-1). The players were exposed to internal and external loads during the training week, comparable to that of a match day, however there were no significant increases in RMR following training despite equivocal loads to a game day.
CONCLUSION: The collisions experienced in rugby match play are likely to be responsible for the significant increases in RMR at GD+1 and GD+3, and consequently, the measurement of RMR via indirect calorimetry may provide a novel non-invasive measure of the effects of collisions. This study provides a novel insight to the energy requirements of recovering from contact sport.

Item Type: Article
Identification Number: https://doi.org/10.1249/MSS.0000000000002169
Date: 23 October 2019
Subjects: B400 Nutrition
C600 Sports Science
Divisions: Faculty of Health, Education and Life Sciences > School of Health Sciences
Depositing User: Matthew Cole
Date Deposited: 19 Nov 2019 13:52
Last Modified: 20 Nov 2019 11:29
URI: http://www.open-access.bcu.ac.uk/id/eprint/8430

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