Abstract
In this paper, we investigate the relation between the variables of golfer's cock-roll motion and golf club performance and variables of club head velocity by the experiment and the statistical method. First, to measure cock-roll motion, we used the three dimensional gyro sensor that we developed. To measure head velocity, we used the ball analytical system of Mizuno Ltd.. Next, variables of the cock-roll motion and the club performance related to the head velocity were selected by the stepwize method. By the multiple regression analysis method, the relation between selected variables and head velocity was estimated. As result of test on accuracy of regression equation which is estimated by Adjusted R-square and analysis of variance, the equation of the head velocity showed significance. Finally, we extracted variables affecting the head velocity. This paper related that the improvement of not only the performance of club but also the technique of golfer who is actually using club was an element necessary for improving the head velocity.
