DO NOT EVER DO THIS!
I am about to show you the worst core exercise you have ever seen!
It shows a “doctor” prescribing an advanced core exercise. The problem is he is going into extreme hyperextension. This position repeated over and over can cause spondylolisthesis and even spondylolysis.
Repetitive Hyperextension ==> Spondylolisthesis
Spondylolisthesis – vertebral slippage
Spondylolysis – fracture
Here is a great explaination from Cassandra Forsythe I pulled from Mike Robertson’s site.
“Spondylolisthesis is a spinal instability condition that affects the posterior elements of the spinal vertebrae, also known as the lamina. These lamina attach to the vertebrae via the pedicles; and, at the top and bottom of the lamina, are the facet joints. The facet joints provide static stability, and to a lesser extent, help with load bearing. However, the main load-bearing piece of the spine is the strong vertebral body. For people who have extensive lumbar lordosis, or participate in activities that involve repeated lumbar hyper extension, especially under a considerable load (like gymnasts and weightlifters), the load-bearing responsibilities are shifted away from the vertebrae and placed upon the smaller posterior spinal structures (the lamina and facet joints). Since these relatively weaker posterior elements aren’t designed to deal with this kind of load, they eventually succumb to the stress and become fractured. When the fracture occurs on one side of the spinal vertebrae, the result is termed spondylolysis.”
So, here it is, the worst core exercise video ever produced:
Here are some more references:
“Athletes who participate in sports involving repeated and forceful hyperextension of the spine may suffer from lumbar facet syndrome, spondylolysis, or spondylolisthesis.” (Reference 2)
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