What is one theory of how the abdominal muscles help protect the back?

The theory that abdominal muscles help protect the back through interabdominal pressure is rooted in the biomechanical functions of the core. When the abdominal muscles contract, they create pressure within the abdominal cavity, which helps to stabilize the spine and pelvis. This intra-abdominal pressure acts like a natural girdle, providing support to the lumbar region during movement and load-bearing activities, thereby reducing the risk of injury.

A stronger and more engaged core means that the spine is better supported against forces that could lead to discomfort or injury. This stabilizing effect is essential, particularly during activities that involve lifting, twisting, or even maintaining posture.

In contrast, while increased muscle mass, improved blood circulation, and caloric burn may all be beneficial in their own right, they do not specifically address the protective mechanism provided by the abdominal muscles in relation to spinal stability and injury prevention. The emphasis on interabdominal pressure highlights the critical role of core stability in protecting the back.