Three-dimensional kinematic analysis of baseball pitching in acceleration phase

Area of Science:

• Sports Biomechanics
• Baseball Pitching Analysis

Background:

• Pitching velocity is crucial in baseball.
• Understanding the biomechanical factors influencing pitching velocity is important for performance enhancement.

Purpose of the Study:

• To investigate the relationship between shoulder external rotation and pitching velocity.
• To explore the role of the acceleration phase timing in pitching performance.

Main Methods:

• Utilized three-dimensional cinematography to analyze the pitching motion.
• Collected data from 3 male baseball pitchers during their performance.

Main Results:

• Increased maximum shoulder external rotation at the start of acceleration correlates with higher ball velocity.
• Greater linear and angular displacement of the forearm contributes to increased velocity.
• Slowing wrist action before ball release appears to be a critical technique for enhancing pitching velocity.

Conclusions:

• Optimizing shoulder rotation mechanics early in the acceleration phase is vital for generating higher pitching velocities.
• Wrist deceleration technique is a significant factor in achieving maximum pitching ball velocity.