[[abstract]]During the past ten years, Taiwanese gymnasts had poorer performance at the high bar exercise than that at other events in the international competitions of gymnastics. A major weakness of the high bar exercise performed by Taiwanese gymnasts is absence of flight acrobatics and dismount. In this study, we used two Redlake cameras with 125Hz recording frequency and 1/625 sec shutter to record the 3D images of a flight acrobatics, Kolman. Digitalization of the 3D images and analysis of the kinematical parameters were carried out by Kwon3D 3.1 Performance System to analyze the kinematical characteristics of Kolman and the important factors to influence gymnasts when they were performing flight acrobatics. The results showed that the gymnast carry out an early acceleration in the Center of Mass (COM), and there were two peaks in the trajectory of the COM movement. The angle of the twist along longitudinal axis before releasing bar and the backward horizontal velocity after releasing bar were greater in failed Kolman than there in the successful Kolman. The results showed that our gymnast had higher horizontal velocity and horizontal component of the force, while he performed a failed Kolman. We suggest that gymnasts should reduce the force of horizontal component by swinging at the position under the bar, release two hands from the bar at the same time, and perform the twist along longitudinal axis after releasing the bar.
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