This study has been conducted to elicit the influence of different roundhouse kick angle and position on protector over 20 top elite athletes of every Olympic weight divisions regarding the impact of Daedo Protector and Score System(PSS) utilized in Taekwondo. Different kicking angle and position on protector were recorded using 8 Eagle Digital Cameras with 200Hz and derived conclusions and results was listed below.
1. Kicking at 60 to 90 degree angle distinguish high chance of scoring may due to larger contact area of the sensor. 2. Kicking onto the front of the electronic body protector delivered better contact obtaining higher scoring chance comparing to kicking on left or right side of the body protector. 3. Athletes with different Olympic weight division demonstrate diversity of kicking angle and area and derived results as listed. (1) Flyweight athletes executed sidekick at 60 to 90 degree obtained better scores and front attack with 30 degree of kicking angle demonstrated 100% of the scoring rate. (2) Featherweight athletes obtained best scoring chance executed sidekick at 60 to 90 degree while front attack scored best. (3) Welterweight athletes’ front attack performed the best whereas sidekick with 60 to 90 degree performed best executing side attack. (4) Heavyweight athletes performed front attack obtained better score rate than side attack while no significant difference was found among kicking angles.
In summary, this study elicited the influence and difference of diversity of roundhouse kick angle and position on protector over every weight division of Olympic Taekwondo athletes wearing Daedo electronic body protector and yielded conclusions as strategies for further coaching instructions to coaches and athletes.
Keywords：Taewkondo, roundhouse kick, protector and score system, sensor, angle, position