Difference in Rugby League Match
COVID-19 enforced rule changes in rugby league Difference in rugby league match characteristics following the introduction of temporary law modifications due to COVID-19; A preliminary investigation Gordon Rennie 1 2, Nicholas Dalton-Barron 1 2 3, Dan Weaving 1 4 Ben Jones 1 3 4 5 6 7 1Carnegie Applied Rugby Research (CARR) Centre, Carnegie School of Sport, Leeds Beckett University, Leeds, United Kingdom,2Catapult Sports, Melbourne, Australia,3England Performance Unit, Rugby Football League, Red Hall, Leeds, United Kingdom,4Leeds Rhinos Rugby League Club, Leeds, United Kingdom,5Department for Health, University of Bath, Bath, United Kingdom,6School of Science and Technology, University of New England, Armidale, New South Wales, Australia, and 7Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, the University of Cape Town and the Sports Science Institute of South Africa, Cape Town, South Africa Keyword j Keyword j Keyword Headline balls [PTB], tries) were extracted from a commercial match uper League (SL) is the highest level of rugby league com- statistics provider (Opta, Leeds, United Kingdom). Spetition in the Northern Hemisphere. The league compe- To establish locomotor characteristics, each player was fitted tition was postponed on 24th Match 2020, due to the global with the same model of GNSS microtechnology device sam- COVID-19 pandemic, and restarted on the 2nd August 2020. pling at 10 Hz (OptimEye S5, Catapult Sports, Melbourne, With the aim of reducing the number of close proximity en- Australia). The test-retest reliability of OptimEye S5 mi- counters within matches, a number of risk mitigation fac- crotechnology devices to measure instantaneous speed across a tors were implemented by the Rugby Football League (RFL).
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