Physical inactivity is associated with narrower lumbar intervertebral discs, high fat content of paraspinal muscles and low back pain and disability.

Arthritis Res Ther · 2015 · PMC4422596 · PMID 25947906

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did not reach statistical significanceno p-value reported

A similar direction of results was observed between physical inactivity and a high fat content of erector spinae, although this did not reach statistical significance.

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