FINGER AND THUMB FORCES DURING BOWLING SHOTS

The purpose of this study was to measure the forces exerted to a bowling ball by thumb and fingers during two different shots. For this task, an instrumented bowling ball was designed and produced, which allowed for force measurement and display of vector diagrams. The highest force is applied by the thumb (up to 120N), followed by middle and the ring finger. The overall moment applied to the ball by thumb and fingers during twisting of the ball reaches 3 Nm