What is the primary function of the Erector Spinae group?

The primary function of the Erector Spinae group is to extend the spine. This group of muscles runs along the vertebral column and plays a crucial role in maintaining an upright posture and facilitating movements that involve bending backward. When the Erector Spinae contracts, it allows for extension of the thoracic and lumbar regions of the spine, which is essential during activities such as standing up straight from a bent position or arching the back. Effective extension also aids in various functional movements and sports activities, highlighting the importance of these muscles in spinal health and performance.