Technical terms and defintions

If anybody could please explain the following terms in the simplest language possible

greater lead knee extension

Maximum shoulder external rotation

forward trunk tilt

Greater shoulder external rotation

greater internal rotation

Maximum elbow extension angular velocity

maximum shoulder internal rotation angular velocity

More open pelvis angle at the time of ball release (REL) also correlated with increased pitch velocity increased. Additionally, pelvis angular velocity from front foot contact to MER, and upper torso angular velocity from MER to REL increased with increased velocity.

A pitcher with increased shoulder external rotation, faster pelvis and upper trunk rotation, and greater front knee stabilization and extension will throw with greater ball velocity. Improved timing to maximize arm velocity closer to the time of ball release will also help ball velocity. Increased torque and force produced at both the shoulder and elbow will also lead to greater ball velocity