As a result, she says, some of the injuries associated with running, such as runner's knee, are uncommon among race walkers.

因此，她说，与跑步相关的一些伤害（例如对跑步者膝盖的损伤）在竞走者中并不常见。

28. Why are race walkers conditioned athletes?

28. 为什么竞走运动员对运动员有条件限制？

Chinese race walkers Qieyang Shijie, Liu Hong and Lyu Xiuzhi as well as men's 4x100m relay team have received their reallocated Olympic medals.

中国竞走运动员切阳什姐、刘虹、吕秀芝以及男子 4100m 接力队分别递补获得奥运奖牌。

According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories per hour.

根据大多数计算，以每小时 6 英里的速度行走的竞走者每小时会燃烧大约 800 卡路里的热量。

The Athletics Integrity Unit (AIU) announced on Twitter on Monday that Russian race walker Yelena Lashmanova has accepted the sanction proposed by the AIU for the use of prohibited substances.

田径诚信委员会（AIU）周一在推特上宣布，俄罗斯竞走运动员叶莲娜·拉什马诺娃已经接受了 AIU 提出的使用违禁物质的判罚。

But the sport's rules require that a race walker's knees stay straight through most of the leg swing and one foot remain in contact with the ground at all times.

但这项运动的规则要求，竞走者的膝盖要在大部分摆腿动作中保持笔直，一只脚要始终保持与地面接触。

According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.

根据她的研究，跑步者每踏一步的压力就高达其自身体重的4倍，而没有离开地面的竞走者每步仅产生其自身体重的1.4倍的压力。

Race walkers are conditioned athletes who compete in events such as the 50-kilometer race walk, which is the longest track and field event at the Summer Olympics, exceeding the distance of a marathon by about five miles.

竞走运动员是有条件的运动员，他们参加 50 公里竞走等项目，这是夏季奥运会最长的田径项目，比马拉松比赛的距离高出约 5 英里。