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Richardson et al. (1999) identified the lumbar multifidus and the TVA as the key stabilizers of the lumbar spine. Both muscles link in with the thoracolumbar fascia to provide what Richardson et al. refer to as “a natural, deep muscle corset to protect the back from injury.”
John Gibbons • The Vital Glutes: Connecting the Gait Cycle to Pain and Dysfunction
Why we crave healthier computing
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There are two important groups of muscles that contribute to stability of the lower back and pelvis. Collectively they have been called the inner unit (core) and the outer unit (myofascial sling systems). The inner unit consists of the transversus abdominis, multifidus, diaphragm, and muscles of the pelvic floor—also collectively known as the core,
... See moreJohn Gibbons • The Vital Glutes: Connecting the Gait Cycle to Pain and Dysfunction
Minimalist Muscle Activation: Crush Structural Imbalances, Find Clarity in Your Movement, and Live Pain-Free and Strong Now and in the Future
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the vertebrae need to be stabilized by core musculature in advance of the arm movement. But optimum stability does not prevent all movement in the spine — instead it allows small movements under control. Thus, proper stability, including core stability, is about a finely nuanced control of movement, as opposed to rigid prevention of movement.
Todd Hargrove • A Guide to Better Movement: The Science and Practice of Moving With More Skill and Less Pain
strengthening the back extensors may provide long-term protection against vertebral fractures, independent of bone mineral density (Sinaki et al. 2002).