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Spin on fastballs thrown by elite baseball pitchers
Tomoyuki Nagami1, Jun Morohoshi, Takatoshi Higuchi
1Graduate School of Sport Sciences, Waseda University, Saitama, Japan. t-nagami@suou.waseda.jp
Medicine and Science in Sports and Exercise
|May 10, 2011
Summary
Elite pitchers do not differ in spin rate or spin axis direction. Higher ball speed correlates with increased spin rate, suggesting spin influences pitching success.
Area of Science:
- Sports Science
- Biomechanics
- Baseball Pitching Analysis
Background:
- Understanding baseball pitching mechanics is crucial for performance.
- Spin rate and spin axis direction are key parameters influencing pitch trajectory and effectiveness.
Purpose of the Study:
- To analyze the spin axis angles and spin rate of baseballs pitched by elite collegiate and professional pitchers.
- To investigate potential differences in these parameters between pitching levels.
Main Methods:
- High-speed video cameras (1000 frames/sec) captured pitch release to 200 ms post-release.
- A custom device analyzed spin axis angle and spin rate from video data.
Main Results:
- No significant differences were found in spin axis direction or spin rate between collegiate and professional pitchers.
- A positive correlation exists between spin rate and ball speed.
- Spin rate showed greater inter-subject variability than ball speed.
Conclusions:
- Pitching level does not significantly impact spin axis direction or spin rate.
- Spin rate is closely linked to ball speed, a critical factor in pitching.
- Individual pitching success may be related to characteristic spin techniques.
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