The document discusses pelvic tilt, which is an anteroposterior motion of the pelvis around an imaginary axis in the frontal plane. There are three main types of pelvic tilt: anterior, posterior, and lateral. Anterior pelvic tilt involves the ASIS moving anteroinferiorly, dropping the front of the pelvis and raising the back. Posterior pelvic tilt is the opposite, with the ASIS moving posteriorly, raising the front of the pelvis and dropping the back. Lateral pelvic tilt describes tilting to either side and can occur with conditions like scoliosis. The document also discusses measuring the angle of pelvic tilt and using exercises to improve postural control of the pel