为什么在跑步机上锻炼更累人_BEC初级作文

为什么在跑步机上锻炼更累人

Question: Why do I find it more difficult and tiring when I take my walk on a treadmill?

问：为什么我发现在跑步机上走会觉得更吃力、更累？

Answer: Many people, including me, find a treadmill workout more draining than the same activity on a sidewalk or track. In a 2017 experiment, runners were asked to jog on a track while rating how difficult the exercise felt. Then they hopped on treadmills without speed displays and were told to set the machine to a pace that felt the same as what they had just run. Almost all chose a speed that was much slower. On the treadmill, this gentle pace felt as difficult as swifter running on the track.

答：很多人，包括我自己，发现在跑步机上比在人行道或跑道上进行同样的锻炼更累。在2017年的一项实验中，研究者要求跑步者在跑道上慢跑，同时评估这项锻炼的难度感受。然后他们跳到没有速度显示器的跑步机上，把速度设定为刚才慢跑时感觉的速度。几乎所有人选择的速度都慢得多。在跑步机上以较慢速度跑步与在跑道上以较快速度跑步的难度感觉是一样的。

But scientists are unsure why treadmill exercise feels harder. Most people’s biomechanics are the same, whether they are on a treadmill or the ground, studies show. And where there are differences, the advantage would seem to reside with the machine. Treadmill jogging is less jarring than running on the ground, for instance. A 2017 study shows that we strike the ground with about 200 percent of our body weight while running on the track and only 175 percent of our body weight when we are on a treadmill.