在他们的实验室中，调查人员运用传感器，照相机以及替他设备来测量女性两腿上的力度和冲击波。这些女性的年龄跨度从18岁至40岁。每人都会穿三个类型的鞋子走路。

In their lab, the researchers used sensors, cameras and other equipment to measure the forces and shock waves in the legs of women, ages 18 to 40, as they walked in each type of shoe.

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