新奇事件簿 孩子为何不知疲惫

Have you ever wondered why children always seem to have bags of energy and never run out of steam? Researchers have discovered that children have the stamina¹ and levels of recovery of endurance athletes. In fact, scientists say children's muscles recover from "high-intensity exercise" a lot quicker than athletes. A study looked at the performance levels of children when they were cycling, and compared their fitness to that of athletes. Researcher Dr Sebastien Ratel said: "We found the children used more of their aerobic² metabolism³ and were therefore less tired during the high-intensity physical activities. They also recovered very quickly - even faster than the well-trained adult endurance athletes."

你有没有想过为什么孩子们好像有用不完的力气还永远都不会累？研究人员发现孩子们有着和耐力运动员一般的精力和恢复力。事实上，科学家们表示，相较运动员而言，孩子们的肌肉能更快地从高强度训练中恢复。一项研究对孩子们骑车时的性能水平进行观察，并将他们的身体素质与运动员进行比较。研究员Sebastien Ratel博士说道：“我们发现孩子们在高强度体力训练中会进行有氧新陈代谢，因此他们不会感觉疲惫。他们们恢复得也很快—甚至比那些受过良好训练的成年耐力运动员还快。”

The researchers hope that their findings will help scientists better understand how the human body changes with age. It could lead to advances in the fight against diabetes⁴ and other diseases. Dr Ratel said the research was particularly important as more children were become less active. He warned: "With the rise in diseases related to physical inactivity, it is helpful to understand the physiological⁵ changes with growth that might contribute to the risk of disease." He added that children should maintain their fitness as they grow up and play as much as they could so they remain healthy as adults. He said: "Children seem to have the ability to play and play and play, long after adults have become tired."

研究人员希望他们的发现能够帮助科学家们更好的理解人体如何随着年龄而变化。这或许能帮助对抗糖尿病和其他疾病。Ratel博士说越来越多的孩子们没有那么活跃了，所以这项研究尤为重要。他警告称：“缺乏身体锻炼而引起的疾病越来越多，该研究能够帮助理解成长中的生理变化，或许会增加疾病风险。”他还说道，孩子们应该随着年龄的增长维系他们的体格健康，尽可能多运动，这样他们才能维持成年人般健康体格。他说：“孩子们似乎有着一直玩耍的体能，成年人都累的不行了，他们也不知疲惫。”

1 stamina   

n.体力；精力；耐力

参考例句：

• I lacked the stamina to run the whole length of the race.我没有跑完全程的耐力。
• Giving up smoking had a magical effect on his stamina.戒烟神奇地增强了他的体力。

2 aerobic   

adj.需氧的，增氧健身法的，有氧的

参考例句：

• Aerobic exercise helps to build up stamina.有氧健身操有助于增强耐力。
• Aerobic dance is conductive to the health.有氧舞蹈有助于健康。

3 metabolism   

n.新陈代谢

参考例句：

• After years of dieting,Carol's metabolism was completely out of whack.经过数年的节食，卡罗尔的新陈代谢完全紊乱了。
• All living matter undergoes a process of metabolism.生物都有新陈代谢。

4 diabetes   

n.糖尿病

参考例句：

• In case of diabetes, physicians advise against the use of sugar.对于糖尿病患者，医生告诫他们不要吃糖。
• Diabetes is caused by a fault in the insulin production of the body.糖尿病是由体內胰岛素分泌失调引起的。

5 physiological   

adj.生理学的，生理学上的

参考例句：

• He bought a physiological book.他买了一本生理学方面的书。
• Every individual has a physiological requirement for each nutrient.每个人对每种营养成分都有一种生理上的需要。