Abstract
This study describes a method for measurement of the golfs putting stroke. The data obtained can be available for sports skills assessment and training. Measurement method proposed was derived by kinematical human body model analysis. The system was developed using 3-D gyro sensor and infrared sensor. Gyro sensor was used to measure the rotation of the club head. Moreover, infrared sensor was used to measure the distance changes between the grip end and the body during putting stroke. As a result of the experiment, the following matter became clear. (1) During swing, since the distance of grip end and body of subjects is changing, it cannot be said that putting stroke is a simple pendulum easily. (2) The golf middle-class player swung so that the face side of a head might become perpendicular to the direction of a hit ball.
