During the windup phase for a left AIC right-handed pitcher, what tends to happen?

• A. There tends to be an increase in right AF IR during the windup phase, with overactivity of the right quadratus lumborum and right adductor magnus, promoting excessive right lateralization; the right posterior glute medius is relatively inhibited.
• B. There is increased left AF ER.
• C. Pelvis rotates left.
• D. No change in muscle activity.

Answer: (A)