"Pelvic tilt" refers to the position of the pelvis, which is the bone structure located at the base of the spine. When someone performs a pelvic tilt, they either tilt their pelvis forward or backward, changing the angle of their hips.
At the same time, they noted a significant decrease in the angle of anterior pelvic tilt when using the ADIM. (strengthandconditioningresearch.com)
It was also higher when performing posterior pelvic tilt in a bent - leg position with feet in the air (90 degrees at hip and knee) than in the other positions. (strengthandconditioningresearch.com)