In results published last week in The Journal of Applied Physiology, the scientists found that heel wearers moved with shorter, more forceful strides than the control group, their feet perpetually in a flexed, toes-pointed position. This movement pattern continued even when the women kicked off their heels and walked barefoot. As a result, the fibers in their calf muscles had shortened and they put much greater mechanical strain on their calf muscles than the control group did. Basically, heel wearers walk less efficiently — even when they’re not wearing heels — causing their muscles to tire out and increasing the risk of strain injuries.
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