Influence of field position and phase of play on the physical demands of match-play in professional rugby league forwards

Gabbett, Tim J. and Polley, Chris and Dwyer, Dan B. and Kearney, Simon and Corvo, Alex (2014) Influence of field position and phase of play on the physical demands of match-play in professional rugby league forwards. Journal of Science and Medicine in Sport, 17 (5). pp. 556-561. ISSN 1440-2440

Abstract

Objectives: No study has investigated the influence of field position and phase of play on the physical demands of match-play in professional rugby league forwards. We investigated the physical demands placed on forwards in elite rugby league matches, with special reference to how these demands differed between attack and defence, and in different field positions. Design: Cohort study. Methods: Twenty-two rugby league players (26. ±. 3 years) from the same professional club participated in this study. Global positioning system (GPS) analysis was completed during 23 matches. Video footage was synchronised with the GPS files and coded for the time spent in attack and defence, and in one of three different field positions (0-30. m, 31-70. m, 71-100. m). Results: The physical demands of defence were consistently greater than attack. Moderate to large differences (ES. = 0.62-1.41) were found between defence and attack for distance covered (109. ±. 16. m/min vs. 82. ±. 12. m/min), low speed distance (104. ±. 15. m/min vs. 78. ±. 11. m/min), frequency of collisions (1.9. ±. 0.7/min vs. 0.8. ±. 0.3/min), and repeated high-intensity effort bouts (1 every 4.9. ±. 5.1. min vs. 1 every 9.4. ±. 6.1. min). The running demands and frequency of repeated high-intensity effort bouts were greater when defending in the opposition's 30. m zone (i.e. 71-100. m), with repeated high-intensity effort bouts also occurring more frequently when defending the team's own try-line and when attacking the opposition's try-line. Conclusions: Specific training drills designed to replicate the attacking and defensive demands of different field positional zones are likely to be effective in preparing players for the most demanding activities that occur in professional rugby league match-play.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 19 May 2017 03:21
Last Modified: 19 May 2017 03:21
Uncontrolled Keywords: activity profiles; repeated-effort; team sports; time-motion analysis; training; adult; competitive behavior; football; geographic information systems; humans; physical endurance; running; video recording; public health, social medicine and epidemiology; physiology
Fields of Research : 11 Medical and Health Sciences > 1106 Human Movement and Sports Science > 110699 Human Movement and Sports Science not elsewhere classified
Socio-Economic Objective: C Society > 92 Health > 9299 Other Health > 929999 Health not elsewhere classified
Identification Number or DOI: 10.1016/j.jsams.2013.08.002
URI: http://eprints.usq.edu.au/id/eprint/32311

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