Research on differences between men's and women's feet started about twenty years ago. Improving women's athletic gears, however, is still a research field that is neglected - particularly in comparison to research on men's equipment.
"It’s only lately [in sportswear development] that if you have 200 subjects, that you have 100 female and 100 male. Typically you have 200 males." Benno Nigg, professor emeritus of kinesiologyWomen's feet tend to have narrower heels and higher arches than men's feet. According to motion-capture research carried out by Adidas, they also experience more expansion in the forefoot and midfoot as there is more movement in the Achilles area around the heel. The running shoe developed with women in mind has a sock-like mesh upper that is not entirely attached to the sole to make sure there is more open space around the woman's arch (via, via, via).
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