B-23 Measuring fingertip forces of rugby spin pass

Abstract

In this research, we measured the force acting on tip of the finger when rugby player throwing spin pass. We put five sensors on the fingers. The sensor can measure three axis force (pressure and two axis shear force). Three examinee, which rugby experiences were varied from 13years to none-experience, threw spin passes three times each and the ball moving speed and rotating speed were measured. From the data analysis, 13-years-experienced rugby player threw the ball concentrating the force in 0.04 seconds just before releasing the ball to increase the rotating speed.