Journal of Martial Arts Anthropology

Abstract - Movement structure and kinetics of the traditional straight punch: measurements in taekwon-do athletes

The main aim of this paper was to study the kinetics of the straight punch and to check the influence of the movement of the non-punching fist on the speed of the punching fist. The study was conducted on a group of 10 taekwon-do ITF (International Taekwon-do Fedearation) athletes. Having adopted the starting position the athletes executed the punch. In the study Smart-D system for complex movement analysis was used. Recording of the movement was made with accuracy of 0.3 – 0.45 mm and frequency of 120 Hz. Mean and standard deviation were used as descriptive statistics. Pearson correlation coefficient was used to verify the relationship between hands’ kinetics. The maximum speed of the punching fist was 8.88 ± 0.98 m/s and the speed of the non-punching fist was -3.59 ± 0.67 m/s. The observations made allowed the author to assume that the length of time needed to execute a punch is mainly affected by the distance which the punching fist must cover and also the average speed of the punching fist. The speed which the punching fist develops depends on the acceleration which the fist achieves and also on the technique with which the movement is executed. The research has also observed that the speed of the punch is also affected by the time difference between the peak velocity of the punching fist and the peak velocity of the fist moving backwards (r=-0.73)