Abstract
To measure and analyze the golf swing form, there is a method that uses a high-speed camera or video camera. However, it is difficult to measure the motion of a thin part like the wrist or ankle by using this method. In golf, the cock motion is one of the wrist motions that is done at the near point of contact between the body and the club. It is regarded as the position that transmits the energy stored in the rotation of the body to the club. In this paper, we proposed a new measurement method that uses a gyro sensor in order to measure cock motion. To measure this motion, the sensor was attached to the left wrist and the forearm. Finally, the features of the cock motions that middle and novice class players exhibit were measured by the experiment. Although this method was developed for cock motion measurement in golf swing, it can be applied to baseball, tennis and so on.
