What's Inside

In this course we review the metrics that we use in our biomechanics report. These are common metrics that you may see in other reports, or if you use PitchAI. We review:

  • What each metric measures
  • Common coaching terms that may be used to describe the more technical terms
  • Where our hardest throwers fall in the metrics in our report

It includes chapters on: 

  • Arm Action Kinematic Positions
  • Mid-Section Kinematic Positions
  • Lower Body Kinematic Positions
  • Kinematic Velocities
  • Arm Joint Kinetics


By the end of this course, participants will have gained an understanding of how we gather biomechanics data at Driveline, insight into research surrounding biomechanics and workload within baseball, and how these findings can aid in the development of baseball players.

Course curriculum

  • 2

    Arm Action Kinematics Positions

    • Elbow Flexion

    • Shoulder External Rotation

    • Shoulder Abduction

    • Shoulder Horizontal Abduction

    • Arm Action Kinematics Quiz

  • 3

    Mid-Section Kinematic Positions

    • Forward Torso Tilt

    • Lateral Torso Tilt

    • Torso Rotation

    • Pelvis Rotation

    • Hip/Shoulder Separation

    • Mid-Section Kinematic Positions

  • 4

    Lower Body Kinematic Positions

    • Front Knee Flexion

    • Stride Length

    • Lower Body Kinematic Positions Quiz

  • 5

    Kinematic Velocities

    • Introduction to Kinematic Velocities

    • Lead Knee Extension Angular Velocity

    • Center of Gravity Velocity

    • Pelvis Rotation Angular Velocity

    • Torso Angular Velocity

    • Elbow Extension Angular Velocity

    • Shoulder Internal Rotation Angular Velocity

    • Kinematic Velocities Quiz

  • 6

    Arm Joint Kinetics

    • Introduction to Arm Joint Kinetics

    • Elbow Varus Moment

    • Shoulder Internal Rotation Moment

    • More Resources and Next Steps