The impact of video review in karate kumite during a Premier League competition

Tomas Carlsson, Jozef Berglez, Sebastian Koivisto Persson and Magnus Carlsson

International Journal of Performance Analysis in Sport, 2020, vol. 20, issue 5, 846-856

Abstract: The aim of the study was to investigate whether a) the option to make video-review appeals influences the match outcome; b) the number of video reviews differs depending on the time period during a match; and the rejected-to-approved-appeal distribution differs depending on the c) time period during the match, d) match status, and e) match category in karate kumite. Video recordings from 555 matches in a Premier League competition were analysed. Point(s) awarded after the video review(s) changed the match outcome for a total of 47 matches, which corresponded to 13.1% of the matches with video review(s). The number of appealed video reviews increased for each 30-s time period in the 3-min matches (P 0.05). For karateka who had fewer points than the opponent, the rejected-to-approved-appeal distribution differed between time periods (P = 0.017). The option for coaches to make video-review appeals for techniques that were not awarded point(s) by the judges increased the chance for a fair match outcome in elite karate kumite.

Date: 2020
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DOI: 10.1080/24748668.2020.1794258

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