Who wouldn't be interested in a pair of sneakers that promise more shapely butts, legs and abs just by wearing them? The ads call such "toning shoes" an athletic footwear game-changer. But do they
Michael McCarthy reports that a growing number of doctors are saying the shoes don't deliver on their marketing promises and warn that they could cause injuries by, among other things,
changing a person's gait, or way of walking.
The shoes, which have a rounded sole that stretches the wearer's leg muscles with each stride, represent the fastest-growing segment of the $17
billion-a-year athletic footwear industry, driven by a 90% female customer base. Market leader Skechers has football pro Joe Montana wooing male customers. Sales could explode 400% this year, say
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