Final answer:
Pelvic rotation during movement occurs in the transverse plane, which divides the body into upper and lower portions, allowing medial and lateral rotation around a vertical axis.
Step-by-step explanation:
Pelvic rotation during movement occurs primarily in the transverse plane. The transverse plane divides the body horizontally into upper and lower portions.
Rotation is the movement where a part of the body turns on its axis. Medial and lateral rotation usually refer to movements at the shoulder or hip. In the case of pelvic rotation during activities like walking or running, the pelvis rotates around a vertical axis in the transverse plane, where one hip moves forward (anteriorly) and the other moves backward (posteriorly).