Effects of different landing with Jump-Slap-Kick in Chinese Martial Arts — Pilot study

According the competition of Chinese Martial Arts, the Jump-Slap-Kick (JSK) is one of appointed performances. The purpose of this study was to investigate parameters in kinematics behaviors of different landing of Jump-Slap-Kick movement. Methods: Six subjects (age: 20.5 ± 1.5years, height: 167.2 ± 5.8cm, body mass: 62.7 ± 11.1kg, age of Chinese Martial Arts: 11 ± 3.2years) voluntarily participated in this study. Two methods, included one leg and double-legs landing with Jump-Slap-Kick, were performed. MEGA high-speed camera with sampling frequency 220 Hz was used in this study as collection kinematic data, and analyzed by SiliconCoach v6.0 motion analysis software. Time responses, height and angle of hip, and speed of ankle were studied. All data were analyzed using the T-test to evaluate whether the test variable differed significantly between different landings. The significance level was set at α=0.05. Results: In the difference landing with JSK, time responses, height and angle of hip were non-significance, but the speeds of ankle were achieve significance, which is 7.81 ± 1.48m/s with single-leg landing and 8.02 ± 0.97m/s with double-legs landing (p=0.003). Conclusion: In this study, shown the speed of ankle with single-leg landing is smaller than of double-legs landing. It may be the reason that the center of gravity of single-legs landing is higher than of double-legs landing.