jerryking + movement-based + running   2

Why Running May Be Good for Your Back - The New York Times
Phys Ed
By GRETCHEN REYNOLDS JUNE 7, 2017

People who regularly run or walk briskly appear to have healthier discs in their spines than people who do not exercise, according to one of the first studies to closely examine links between movement and disc health.

The findings refute a widely held belief that activities like running might overtax the spine and indicate that, instead, they make it sturdier.

The human spine is a complicated mechanism, composed of vertebral bones cushioned between intervertebral discs. These discs, shaped like tiny whoopee cushions, contain a viscous fluid that compresses and absorbs pressure during movement, keeping the back in good working form.

With age, disease or injury, spinal discs can degenerate and bulge, resulting in back pain, which can be debilitating......Muscles and bones respond to the physical strains of movement by becoming larger and stronger. But most experts thought that spinal discs remain impervious to this process and might in fact be harmed by the jarring from running........Interestingly, mileage barely mattered. The discs of the people who ran less than 30 miles per week were almost identical to those in the long-distance group, suggesting that, compared to moderate mileage, heavy training does not augment disc health but also does not contribute to deterioration.......The sweet spot for disc health seemed to reside somewhere in the range of fast walks and gentle jogs.....this was a one-time snapshot of people’s backs. It cannot prove that exercise caused people’s discs to become healthier, but only that people who ran had healthier discs.
exercise  fitness  human_spine  movement-based  running 
june 2017 by jerryking

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