Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2009) 08, 13 - 16

Combat Sports Special Issue 3, Research article
Measurement and Comparison of Taekwondo and Yongmudo Turning Kick Impact Force for Two Target Heights
David O’Sullivan1, , Chulsoo Chung1, Kikwang Lee2, Euihwan Kim3, Sungchul Kang3, Taewhan Kim3, Insik Shin1
Author Information
1 Department of Physical Education, Seoul National University,
2 Department of Physical Education, Kukmin University,
3 Department of Martial Arts, Yongin University, South Korea

David O’Sullivan
✉ Seoul National University, Main Campus, Gwanak 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea
Email: tkdnutter@yahoo.com
Publish Date
Received: 28-10-2008
Accepted: 31-07-2009
Published (online): 01-11-2009
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ABSTRACT

The primary purpose of this research was to compare the impact characteristics of Taekwondo (TKD) and Yongmudo (YMD) player’s turning kick according to the target height. 5 highly skilled YMD and 5 TKD players participated in this study. To measure the impact force, two accelerometers were fixed to a PVC pipe in a sandbag. Each participant performed 10 turning kicks trunk and face height in random order. Only the trial with the most accurate (most central impact) measurement was used in the statistical analysis (p < 0.05).There was a significant difference for impact force according to the target height approximately 6400 ± 898 N, 6393 ± 1382 N for the mid section and 5419 ± 659 N, 5475 ± 1293 N for the high section of TKD and YMD groups, but not between groups. The swing phase for the TKD group was significantly shorter than the YMD group’s. The TKD groups’ recovery phase of the trunk height turning kick was significantly shorter. There was a difference in the players’ center of mass (COM) movement as the TKD players’ moved significantly more forward, suggesting that the TKD players tended to slide towards the target during the execution of the kick. In conclusion, as the turning kick was performed quicker by the TKD players with a similar impact force and more forward motion, it is evaluated to be a better technique of turning kicking.

Key words: Turning kick, impact force, Taekwondo, Yongmudo


           Key Points
  • This impact force measuring device had a significantly smaller standard deviation then that of impact force measuring devices.
  • There was a significant difference between the impact forces according to the height approximately 6400 ± 898N, 6393 ± 1382N for the mid section and 5419 ± 659N, 5475 ± 1293N for the high section of TKD and YMD groups.
  • The turning kick was performed quicker by the TKD players with a similar impact force and more forward motion.
 
 
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