Marker-Less Motion Analysis of Turning Kick in Taekwondo
This study presents a marker-less method to measure Taekwondo athletes’ kicking velocity, and total kinetic energy generated from the movement. In this study, twelve (n = 12) national-level male Taekwondo athletes from three age categories (12–14 years old, 15–17 years old, and 18 years old and above) were recruited. All athletes were requested to perform turning kicks using back and front leg. Their movements were recorded using a marker-less motion analysis system that consists of a depth sensor (Kinect) and motion analysis software (Virtual Sensei Lite). The results reveal that the average kicking speed for the age categories of 18 years old and above meets the typical range of turning kick velocity that was reported in a previous study using conventional methods of measurement. In terms of the total kinetic energy produced during the movement, the average value is comparable to the value that was previously investigated using the conventional measuring methods. However, the usage of total kinetic energy data that were obtained in this study should be considered with caution. The large values of standard deviation in the data indicate that large variation existed in the data set. This is not the case with the kicking velocity data, which has shown significantly smaller standard deviation values.
KeywordsMotion analysis Marker less Taekwondo Kick
This work was sponsored by Universiti Teknologi MARA [600-RMI/DANA 5/3/ARAS (54/2015)]. We also would like to thank the Faculty of Sports Science and Recreation, Universiti Teknologi MARA, Malaysia for supporting this study.
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