J.Y. Ko's research while affiliated with CHA University and other places

Publication (1)

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The axe kick, in Olympic style taekwondo, has been identified as the most popular scoring technique aimed to the head during full contact competition. The first purpose of this study was to identify and investigate design issues with the current World Taekwondo Federation approved chest protector. A secondary purpose was to develop a novel chest pr...


... In recent years, World Taekwondo incorporated modern technology into the discipline, i.e., the Protector Scoring System (PSS), the instant Video Replay System (VRS), and relevant competition rule changes [12][13][14][15][16]. The latest revisions in Olympic taekwondo rules penalize non-fighting actions, the presence of "phantom striking", and unnecessary leg elevation; limit possible fouls; and modify the scoring system. ...