Skip Navigation LinksHome > December 2011 - Volume 43 - Issue 12 > Spin on Fastballs Thrown by Elite Baseball Pitchers
Medicine & Science in Sports & Exercise:
doi: 10.1249/MSS.0b013e318220e728
Applied Sciences

Spin on Fastballs Thrown by Elite Baseball Pitchers

NAGAMI, TOMOYUKI1,2; MOROHOSHI, JUN1; HIGUCHI, TAKATOSHI1; NAKATA, HIROKI3; NAITO, SHIGETO1,4; KANOSUE, KAZUYUKI3

Collapse Box

Abstract

Purpose: In this study, we analyzed the direction of the spin axis angles and the spin rate of baseballs pitched by elite collegiate and professional pitchers.

Method: The video image of a ball being pitched was taken from the period just before release until 200 ms after release with a high-speed video camera at a rate of 1000 frames per second. A custom-made device was used to analyze the spin axis angle and the spin rate.

Results and Conclusion: There were no significant differences in the direction of the spin axis angles or the spin rate between collegiate and professional pitchers. A significant correlation was obtained between spin rate and ball speed; that is, the higher the ball speed, the greater the spin rate. In addition, the spin rate deviated more across subjects than did ball speed. For all subjects, the azimuth and elevation of spin axis were 19° ± 14° and −32° ± 9°, respectively. Some of the pitchers were able to put a characteristic spin on their fastball; the nature of this spin could be related to their pitching success.

©2011The American College of Sports Medicine

Login

Article Tools

Share

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.

Connect With Us