The abdominal wall consists of four muscles; Rectus abdomens, external obliques, internal obliques and transverse abdominals. Abdominal muscles serve a dual function of both producing and preventing motion as they promote the stability of the pelvis and lower back. This helps maintain a neutral pelvis and optimal lumbar curve. The primary movements of the abdominals are flexion, rotation, lateral flexion, anti-lateral flexion, and stabilization.
The rectus abdominis is a long muscle that extends from the crest of the pubis to the rib cage. The primary function of the rectus abdominis is flexion of the trunk. The lowest fibers contribute to flexion at the hip joint as well. In order to optimize function of the rectus abdominis