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SSS 2009-04-01

时间:2010-05-17 07:03来源:互联网 提供网友:木渐浅。   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.

Coffee before biking? You may have to stop on the side of the road sooner, but new research suggests that caffeine can help you get more bang from your workout buck1, because it keeps you from feeling the burn.

Competitive cyclists and other athletes often consume caffeine before a competition, presumably because they feel like the buzz helps them push a little bit harder. But a study published in the April issue of the International Journal of Sport Nutrition and Exercise Metabolism2 suggests that the reason caffeine allows athletes to push themselves farther is because it makes exercise hurt that much less.

Researchers had 25 subjects engage in two bouts3 of high intensity4 cycling. Before each session, they gave every subject a pill. One time, the pill contained the equivalent of two or three cups of coffee. The other time it was just a placebo5. The participants all said they felt less pain in their leg muscles during the caffeine-assisted workout than they did with the sugar pill. And it even worked for subjects who already chug a couple thermoses of joe a day. So, the barista can help your biking. Java can boost your jogging. And, of course, enjoy those lattes before your Pilates.

Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.

 


点击收听单词发音收听单词发音  

1 buck ESky8     
n.雄鹿,雄兔;v.马离地跳跃
参考例句:
  • The boy bent curiously to the skeleton of the buck.这个男孩好奇地弯下身去看鹿的骸骨。
  • The female deer attracts the buck with high-pitched sounds.雌鹿以尖声吸引雄鹿。
2 metabolism 171zC     
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。
3 bouts 2abe9936190c45115a3f6a38efb27c43     
n.拳击(或摔跤)比赛( bout的名词复数 );一段(工作);(尤指坏事的)一通;(疾病的)发作
参考例句:
  • For much of his life he suffered from recurrent bouts of depression. 他的大半辈子反复发作抑郁症。 来自《简明英汉词典》
  • It was one of fistiana's most famous championship bouts. 这是拳击界最有名的冠军赛之一。 来自《现代英汉综合大词典》
4 intensity 45Ixd     
n.强烈,剧烈;强度;烈度
参考例句:
  • I didn't realize the intensity of people's feelings on this issue.我没有意识到这一问题能引起群情激奋。
  • The strike is growing in intensity.罢工日益加剧。
5 placebo placebo     
n.安慰剂;宽慰话
参考例句:
  • The placebo has been found to work with a lot of different cases.人们已发现安慰剂能在很多不同的病例中发挥作用。
  • The placebo effect refers to all the observable behaviors caused by placebo.安慰剂效应是指由安慰剂所引起的可观察的行为。
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TAG标签:   SSS  competition
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