The erector spinae group, also known as sacrospinalis or extensor spinae, spans from the sacrum to the skull, running longitudinally along the spine. It is attached to the sacrum, the five lumbar vertebrae, and the lower thoracic vertebrae. As the fibers ascend, they diverge at the thoracic level into three distinct muscle groups:
In the cervical region, the erector spinae muscles are covered by the nuchal ligament, while in the thoracic and lumbar regions, they are enveloped by the thoracolumbar fascia. These muscles are further subdivided based on the specific regions of the vertebral column or skull they attach to, such as lumborum, thoracis, cervicis, and capitis.
The erector spinae muscles are the strongest in the back and bear most of the load required to support the spine. They are both extensors and rotators of the axial skeleton and are innervated by the lateral branches of the dorsal rami from cervical, thoracic, and lumbar spinal nerves.
The intermediate layer of back muscles, primarily the erector spinae group, serves several essential roles:
The Core Structure & Function
Mentor Exercise Review
A Mentor Review is a live guided session where you can present exercises, ask questions, and receive individual feedback on your execution, cueing, and reasoning.
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The Spine & Neck – Back Muscles Lectures – Part 2
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The Spine & Neck – Back Muscles Lectures – Part 1
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The Pelvis & Posterior Abdominal Wall Lectures –
Part 2
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The Pelvis & Posterior Abdominal Wall Lectures –
Part 1
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The Core Structure & Function Lectures – Part 2
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The Core Structure & Function Lectures – Part 1
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The KinetiCode® Pilates Certification follows a 7-month study cycle, designed for maximum flexibility. You can begin at the start of any month and progress at your own pace while completing all required coursework.
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