Energetic and Metabolic Power Demands of National Rugby League Match-Play

C Cummins, A Gray, K Shorter, M Halaki

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Abstract

The purpose of this study was to apply a time-motion model to estimate and describe the energy expenditure and metabolic power demands of playing positions in elite rugby league match-play, utilizing Global Positioning System (GPS) devices. 18 elite rugby league players participated in this study. Players' positional groups included: outside backs (n=59 files, n=4 players), adjustables (n=74 files, n=4 players), wide-running (n=104 files, n=7 players) and hit-up forwards (n=36 files, n=3 players). Outside backs expended the greatest total energy (40.1±5.0 kJ·kg(-1)) per match, equivalent to 8.1%, 26.6% and 61.9% greater energy than adjustables, wide-running and hit-up forwards, respectively. Adjustables attained an anaerobic index 7.3% higher than wide-running forwards, 19.7% higher than hit-up forwards (p=0.001) and 43.2% higher than outside backs (p<0.001). Wide-running forwards achieved an anaerobic index (0.34±0.04) 11% and 32.8% higher than hit-up forwards (p=0.001) and outside backs (p<0.001), respectively. Mean power of adjustables (10.0±0.9 W·kg(-1)) was significantly higher than all other groups (outside backs: 28.8%, 7.8±1.0; hit-up: 12.4%, 8.9±0.6; and wide-running: 8.7%, 9.2±0.7 forwards) (p<0.001). Energetics indices indicated differing metabolic demands for all positional groups, suggesting position-specific conditioning drills are required to replicate the energetic demands of match-play.

Original languageEnglish
Pages (from-to)552-558
Number of pages7
JournalInternational Journal of Sports Medicine
Volume37
Issue number7
DOIs
Publication statusPublished - Jun 2016
Externally publishedYes

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Football
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Geographic Information Systems
Mandrillus
Energy Metabolism
Equipment and Supplies

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Cummins, C ; Gray, A ; Shorter, K ; Halaki, M. / Energetic and Metabolic Power Demands of National Rugby League Match-Play. In: International Journal of Sports Medicine. 2016 ; Vol. 37, No. 7. pp. 552-558.
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abstract = "The purpose of this study was to apply a time-motion model to estimate and describe the energy expenditure and metabolic power demands of playing positions in elite rugby league match-play, utilizing Global Positioning System (GPS) devices. 18 elite rugby league players participated in this study. Players' positional groups included: outside backs (n=59 files, n=4 players), adjustables (n=74 files, n=4 players), wide-running (n=104 files, n=7 players) and hit-up forwards (n=36 files, n=3 players). Outside backs expended the greatest total energy (40.1±5.0 kJ·kg(-1)) per match, equivalent to 8.1{\%}, 26.6{\%} and 61.9{\%} greater energy than adjustables, wide-running and hit-up forwards, respectively. Adjustables attained an anaerobic index 7.3{\%} higher than wide-running forwards, 19.7{\%} higher than hit-up forwards (p=0.001) and 43.2{\%} higher than outside backs (p<0.001). Wide-running forwards achieved an anaerobic index (0.34±0.04) 11{\%} and 32.8{\%} higher than hit-up forwards (p=0.001) and outside backs (p<0.001), respectively. Mean power of adjustables (10.0±0.9 W·kg(-1)) was significantly higher than all other groups (outside backs: 28.8{\%}, 7.8±1.0; hit-up: 12.4{\%}, 8.9±0.6; and wide-running: 8.7{\%}, 9.2±0.7 forwards) (p<0.001). Energetics indices indicated differing metabolic demands for all positional groups, suggesting position-specific conditioning drills are required to replicate the energetic demands of match-play.",
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Energetic and Metabolic Power Demands of National Rugby League Match-Play. / Cummins, C; Gray, A; Shorter, K; Halaki, M.

In: International Journal of Sports Medicine, Vol. 37, No. 7, 06.2016, p. 552-558.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Cummins, C

AU - Gray, A

AU - Shorter, K

AU - Halaki, M

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N2 - The purpose of this study was to apply a time-motion model to estimate and describe the energy expenditure and metabolic power demands of playing positions in elite rugby league match-play, utilizing Global Positioning System (GPS) devices. 18 elite rugby league players participated in this study. Players' positional groups included: outside backs (n=59 files, n=4 players), adjustables (n=74 files, n=4 players), wide-running (n=104 files, n=7 players) and hit-up forwards (n=36 files, n=3 players). Outside backs expended the greatest total energy (40.1±5.0 kJ·kg(-1)) per match, equivalent to 8.1%, 26.6% and 61.9% greater energy than adjustables, wide-running and hit-up forwards, respectively. Adjustables attained an anaerobic index 7.3% higher than wide-running forwards, 19.7% higher than hit-up forwards (p=0.001) and 43.2% higher than outside backs (p<0.001). Wide-running forwards achieved an anaerobic index (0.34±0.04) 11% and 32.8% higher than hit-up forwards (p=0.001) and outside backs (p<0.001), respectively. Mean power of adjustables (10.0±0.9 W·kg(-1)) was significantly higher than all other groups (outside backs: 28.8%, 7.8±1.0; hit-up: 12.4%, 8.9±0.6; and wide-running: 8.7%, 9.2±0.7 forwards) (p<0.001). Energetics indices indicated differing metabolic demands for all positional groups, suggesting position-specific conditioning drills are required to replicate the energetic demands of match-play.

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