Abstract
Abstract: In this study, joint angles of the lower extremity and tibial acceleration and angular velocity were measuredduring a snowboard simulator exercises in order to evaluate the skill of snowboarders. Ten unskilled and ten expertsnowboarders were recruited for the study. A three-dimensional motion capture system and two inertial sensor mod-ules were used to acquire joint movements, acceleration and angular velocity of the lower extremities during snow-board simulator exercises. Pattern variations were calculated to assess variations in the snowboard simulator motionof unskilled and expert snowboarders. Results showed that expert snowboarders showed greater range of motionin joint angles and greater peak to peak amplitude in acceleration and angular velocity for tibia than unskilled snow-boarders. The unskilled snowboarders did not show symmetrical shape(same magnitude but opposite direction) intibial angular velocity during two edge turns in snowboard simulator exercises. The expert snowboarders showedsmaller pattern variations for joint angle of lower extremity, tibial acceleration and tibial angular velocity thanunskilled snowboarders. Inertial sensor data and pattern variations during the snowboard simulator exercises couldbe useful to evaluate the skill of snowboarders.Key words: snowboard simulator, inertial sensor, kinematics, pattern variation
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