In order to analyze the factors that influence velocity away from deck of half-pipe in snowboard.,the authors of this paper studied some excellent snowboarders' out and in half-pipe kinematic parameters using biomechanics theories and video analysis,with characteristics of half-pipe field.The results indicated that factors influencing out half-pipe velocity included high fall of field,the first in half-pipe velocity,the angle by velocity direction of center of gravity and direction of snowboard edge and body position out and in half-pipe.It is suggested that snowboarders should regulate the position of center of gravity to adjust the sliding direction and velocity.
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