An often overlooked muscle group when it comes to stabilization exercises for the pelvis and low back are the pelvic floor muscles (the levator ani and coccygeus). This is a group of muscles that connect from the front of the pubic bone to the tailbone. They create a hammock between the legs and assist in stabilizing the pelvis as well as supporting the abdominal organs, particularly the bladder and bowels.

Weakness in the pelvic floor muscles can contribute to back pain, sacroiliac joint pain, pubic symphysis pain, as well as incontinence (leakage of urine) when you cough or sneeze. Dysfunction in the pelvic floor muscles can be due to trauma, as a result of childbirth, or due to poor posture with associated muscle imbalances.

To exercise the pelvic floor muscles, try to envision pulling the muscles of the saddle area up and in towards your abdominal cavity. You should not feel your buttocks, thighs, or abdominals tightening as you do this. One of the simplest ways to learn to contract the pelvic floor is to stop the flow of urine while you are on the toilet. You can try this technique to verify which muscles to isolate, but avoid doing this often, as it can cause urinary tract infections.

This type of pelvic floor contraction is also known as Kegel exercises. Though it can be difficult to learn how to isolate these muscles, they are an important component of a lumbosacral rehabilitation program. (They’re also very important to do throughout pregnancy and immediately following birth in order to prevent and manage incontinence.) If you are not certain that you are performing these with the correct technique, discuss it with your health care provider or physical therapist.