I found this in the NY Times online edition
July 21, 2010
Phys Ed: Do Certain Types of Sneakers Prevent Injuries?
By GRETCHEN REYNOLDS
A few years ago, the military began analyzing the shapes of recruits’ feet. Injuries during basic training were rampant, and military authorities hoped that by fitting soldiers with running shoes designed for their foot types, injury rates would drop. Trainees obediently began clambering onto a high-tech light table with a mirror beneath it, designed to help outline a subject’s foot. Evaluators classified the recruits as having high, normal or low arches, and they passed out running shoes accordingly.
Many of us have had a similar experience. For decades, coaches and shoe salesmen have visually assessed runners’ foot types in order to recommend footwear. Runners with high arches have been directed toward soft, well-cushioned shoes, since it’s thought that high arches prevent adequate pronation, or the inward motion of your foot and ankle as you run. Pronation dissipates some of the forces generated by each stride. Flat-footed, low-arched runners, who tend to over-pronate, typically have been told to try sturdy “motion control” shoes with firm midsoles and Teutonic support features, while runners with normal arches are offered neutral shoes (often called “stability” shoes by the companies that make and categorize them).
Read on here.
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