主成分分析によるシャフト質量変化時のゴルフスイングの特徴分析

抄録

For golfers, using the suitable shaft provided good result in the shot improvement such as flight distance and hitting direction. Golf club makers have been developing golf clubs that can launch golf balls farther and more accurately. On the other hand, golf clubs with excessive distance and accuracy may reduce the fun of playing golf, so the rules set an upper limit on golf club design values. Therefore, club manufacturers have developed a service that measures a golfer's golf swing and suggests golf clubs that are suitable for the golfer's swing. As a result, many golfers improve their shot results by using the shaft recommended by the systems. The reason for the improvement is that it affects both or either the swing behavior or deformation of the shaft when using the recommended shaft. No previous studies have investigated the relationship between golf swing motion and shaft mass change. Therefore, we focus on the effect of club characteristic changes on swing behavior, and the purpose of this study is to extract differences in swing behavior of golfers when club characteristics are changed using statistical methods. First, we measured the swing behavior of several golfers when the shaft mass was changed, and calculated the swing trajectory of the club head with the wrist position as the origin. Next, principal component analysis was performed on the swing trajectories, and statistical analysis, MANOVA and Multiple Comparison Procedure were performed on the obtained swing plane data and its normal vectors to analyze the contribution of shaft mass change to swing behavior.