Notice how they make contact with the ground as they roll from heel to toe and then travel through the air to stride forward.
留意它们是如何从脚跟到脚趾接触地面，然后离开地面向前迈进。
Walking is also called heel and toe walking. The heel of the form foot hits the ground just before the toe of the back foot leaves the ground. So one foot is in contact with the ground at all times.
竞走也称作足踵和足趾走。前足踵着地后足趾才能抬起来。因此，必须有一只脚始终着地。
Result: Gait characteristic and foot-ground reaction forces in initiation from standing at rest to the heel-contact for the second time was analyzed.
结果：描述、分析了完整起步过程各步相的特征以及地面对足的三维反作用力规律。
Some say to run on the ball of your foot, others say contact the ground with the heel. We take a middle of the road approach.
有些人认为跑步时用前掌着地，也有人认为应该足跟着地。
Some say to run on the ball of your foot, others say contact the ground with the heel. We take a middle of the road approach.
有些人认为跑步时用前掌着地，也有人认为应该足跟着地。
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