The assessment of total energy expenditure during a 14-day ‘in-season’ period of professional rugby league players using the Doubly Labelled Water method

Hdl Handle:
http://hdl.handle.net/10034/603636
Title:
The assessment of total energy expenditure during a 14-day ‘in-season’ period of professional rugby league players using the Doubly Labelled Water method
Authors:
Morehen, James C.; Bradley, Warren J.; Clarke, Jon; Twist, Craig; Hambly, Catherine; Speakman, John R.; Morton, James P.; Close, Graeme L.
Abstract:
Rugby League is a high-intensity collision sport competed over 80-minutes. Training loads are monitored to maximise recovery and assist in the design of nutritional strategies although no data are available on the Total Energy Expenditure (TEE) of players. We therefore assessed Resting Metabolic Rate (RMR) and TEE in six Super-League players over two consecutive weeks in-season including one-game per week. Fasted RMR was assessed followed by a baseline urine sample before oral administration of a bolus dose of hydrogen (deuterium 2H) and oxygen (18O) stable isotopes in the form of water (2H218O). Every 24 hours thereafter, players provided urine for analysis of TEE via DLW method. Individual training-load was quantified using session rating of perceived exertion (sRPE) and data were analysed using magnitude-based inferences. There were unclear differences in RMR between forwards and backs (7.7 ± 0.5 cf. 8.0 ± 0.3 MJ, respectively). Indirect calorimetry produced RMR values most likely lower than predictive equations (7.9 ± 0.4 cf. 9.2 ± 0.4 MJ, respectively). A most likely increase in TEE from week-1 to -2 was observed (17.9 ± 2.1 cf. 24.2 ± 3.4 MJ) explained by a most likely increase in weekly sRPE (432 ± 19 cf. 555 ± 22 AU), respectively. The difference in TEE between forwards and backs was unclear (21.6 ± 4.2 cf. 20.5 ± 4.9 MJ, respectively). We report greater TEE than previously reported in rugby that could be explained by the ability of DLW to account for all match and training-related activities that contributes to TEE.
Affiliation:
Liverpool John Moores University; Widnes Vikings Rugby League; University of Chester; University of Aberdeen
Citation:
Morehen, J. C., Bradley, W. J., Clarke, J., Twist, C., Hambly, C., Speakman, J. R., . . . Close, G. L. (2016). The Assessment of Total Energy Expenditure During a 14-Day In-Season Period of Professional Rugby League Players Using the Doubly Labelled Water Method. International Journal of Sport Nutrition and Exercise Metabolism, 26(5), 464-472. doi: doi:10.1123/ijsnem.2015-0335
Publisher:
Human Kinetics
Journal:
International Journal of Sports Nutrition and Exercise Metabolism
Publication Date:
Oct-2016
URI:
http://hdl.handle.net/10034/603636
DOI:
10.1123/ijsnem.2015-0335
Additional Links:
http://journals.humankinetics.com/IJSNEM
Type:
Article
Language:
en
Description:
As accepted for publication.
EISSN:
1543-2742
Appears in Collections:
Sport and Exercise Sciences

Full metadata record

DC FieldValue Language
dc.contributor.authorMorehen, James C.en
dc.contributor.authorBradley, Warren J.en
dc.contributor.authorClarke, Jonen
dc.contributor.authorTwist, Craigen
dc.contributor.authorHambly, Catherineen
dc.contributor.authorSpeakman, John R.en
dc.contributor.authorMorton, James P.en
dc.contributor.authorClose, Graeme L.en
dc.date.accessioned2016-03-24T14:15:58Zen
dc.date.available2016-03-24T14:15:58Zen
dc.date.issued2016-10en
dc.identifier.citationMorehen, J. C., Bradley, W. J., Clarke, J., Twist, C., Hambly, C., Speakman, J. R., . . . Close, G. L. (2016). The Assessment of Total Energy Expenditure During a 14-Day In-Season Period of Professional Rugby League Players Using the Doubly Labelled Water Method. International Journal of Sport Nutrition and Exercise Metabolism, 26(5), 464-472. doi: doi:10.1123/ijsnem.2015-0335en
dc.identifier.doi10.1123/ijsnem.2015-0335-
dc.identifier.urihttp://hdl.handle.net/10034/603636en
dc.descriptionAs accepted for publication.en
dc.description.abstractRugby League is a high-intensity collision sport competed over 80-minutes. Training loads are monitored to maximise recovery and assist in the design of nutritional strategies although no data are available on the Total Energy Expenditure (TEE) of players. We therefore assessed Resting Metabolic Rate (RMR) and TEE in six Super-League players over two consecutive weeks in-season including one-game per week. Fasted RMR was assessed followed by a baseline urine sample before oral administration of a bolus dose of hydrogen (deuterium 2H) and oxygen (18O) stable isotopes in the form of water (2H218O). Every 24 hours thereafter, players provided urine for analysis of TEE via DLW method. Individual training-load was quantified using session rating of perceived exertion (sRPE) and data were analysed using magnitude-based inferences. There were unclear differences in RMR between forwards and backs (7.7 ± 0.5 cf. 8.0 ± 0.3 MJ, respectively). Indirect calorimetry produced RMR values most likely lower than predictive equations (7.9 ± 0.4 cf. 9.2 ± 0.4 MJ, respectively). A most likely increase in TEE from week-1 to -2 was observed (17.9 ± 2.1 cf. 24.2 ± 3.4 MJ) explained by a most likely increase in weekly sRPE (432 ± 19 cf. 555 ± 22 AU), respectively. The difference in TEE between forwards and backs was unclear (21.6 ± 4.2 cf. 20.5 ± 4.9 MJ, respectively). We report greater TEE than previously reported in rugby that could be explained by the ability of DLW to account for all match and training-related activities that contributes to TEE.en
dc.language.isoenen
dc.publisherHuman Kineticsen
dc.relation.urlhttp://journals.humankinetics.com/IJSNEMen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectnutritionen
dc.subjectMetabolismen
dc.titleThe assessment of total energy expenditure during a 14-day ‘in-season’ period of professional rugby league players using the Doubly Labelled Water methoden
dc.typeArticleen
dc.identifier.eissn1543-2742en
dc.contributor.departmentLiverpool John Moores University; Widnes Vikings Rugby League; University of Chester; University of Aberdeenen
dc.identifier.journalInternational Journal of Sports Nutrition and Exercise Metabolismen
This item is licensed under a Creative Commons License
Creative Commons
All Items in ChesterRep are protected by copyright, with all rights reserved, unless otherwise indicated.