Gluteal Development Indicating Physical Fitness (image) University of Texas at Austin Share Print E-Mail Caption Buttock protrusion associated with (a) gluteal development indicating physical fitness, (b) adipose tissue deposition, and (c) vertebral wedging. Notes: All women exhibit identical buttock protrusion. Women (a) and (c) also exhibit an identical angle between the thoracic spine and buttocks (i.e., lumbar curvature). Credit The University of Texas at Austin Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.