The postural position of the thoracolumbar spine is a major contributor to disc compressive and muscular loads and this in turn can influence low back pain.

In this study by Chiropractic BioPhysics researchers, compressive loads on the L5-S1 (lower lumbar) disc nearly doubled in the anterior translated posture.
Anterior translation of the thorax resulted in significantly increased loads and stresses acting thon the thoracolumbar spine. this posture is common on lumbar spinal disorders and could contribute to lumbar disc pathologies, progression of 505S1 spondylolisthesis deformities, and poor outcomes after lumbar spine surgery.