CanFitPro Personal Training Specialist Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 445

What is the primary role of the deep erector spinae?

Hyperextension of the spine

Compress the lumbar spine onto the sacrum

The deep erector spinae muscles play a crucial role in maintaining the stability and alignment of the spine. The primary function of these muscles is to compress the lumbar spine onto the sacrum, particularly during activities such as bending, lifting, and twisting. This helps to protect the vertebrae and discs from excessive or harmful movement. While the other options may also involve the use of the deep erector spinae, they are not the primary role of these muscles. For example, while the deep erector spinae assists in lumbar extension (option D), its main role is still to compress the lumbar spine onto the sacrum. Similarly, while it may contribute to controlling the position of the lower thorax (option C), this is not its primary function. Lastly, while hyperextension of the spine (option A) may involve the use of the deep erector sp

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Control the position of the lower thorax

Lumbar extension

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