Heavy Sleep
文章来源: 文章作者: 发布时间:2008-01-23 02:53 字体: [ ]  进入论坛
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Weighing too much can damage your health, and obesity1 is a growing problem for both kids and adults around the world.

河南快3规则 www.r1q7w.cn Sleep might be one answer to the problem. A new study has found that elementary school students who slept too little were more likely to gain pounds.

 

 

In the United States today, some 9 million children over the age of 6 are <a  target=obese2." src="/upimg/allimg/080123/1055280.jpg" border="0" />

In the United States today, some 9 million children over the age of 6 are obese.

 

 

Past studies have shown a link between sleeping less and weighing more, but scientists have had a tough time determining "which came first, the chicken or the egg," says Julie C. Lumeng of the University of Michigan in Ann Arbor3.

In other words, it hasn't been clear whether kids who weigh too much have trouble sleeping, or whether sleeping less leads to weight gain. Both scenarios4 seemed equally possible.

To get a better idea of which causes which, Lumeng and colleagues interviewed the parents of 785 third graders from around the United States. The parents answered questions about how well their kids slept that year. Three years later, the parents answered the same questions.

By sixth grade, 18 percent of kids involved in the study were obese. The scientists found no relationship between weight and the students' race or gender5. It also didn't matter how strict their parents were, or whether they were boys or girls. Obesity struck all of these groups equally.

Instead, sleep seemed to be the key factor. Over the 3 years of the study, the children averaged a healthy 9.5 hours of sleep a night. Some kids, however, slept a lot more--or less--than others.

For the sixth graders, every hour of sleep above the 9.5-hour average was linked to a 20 percent lower risk of being obese. Sleep appeared doubly important for the third graders. Every extra hour of sleep they got was linked to a 40 percent drop in obesity by sixth grade.

"I expected we'd find that this [sleep link with obesity] was just a bunch of bunk," says Lumeng, a pediatrician. But their findings6 were convincing. No matter how her team looked at the link, "we couldn't make it go away."—Emily Sohn

 



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1 obesity Dv1ya     
n.肥胖,肥大
参考例句:
  • One effect of overeating may be obesity.吃得过多能导致肥胖。
  • Sugar and fat can more easily lead to obesity than some other foods.糖和脂肪比其他食物更容易导致肥胖。
2 obese uvIya     
adj.过度肥胖的,肥大的
参考例句:
  • The old man is really obese,it can't be healthy.那位老人确实过于肥胖了,不能算是健康。
  • Being obese and lazy is dangerous to health.又胖又懒危害健康。
3 arbor fyIzz0     
n.凉亭;树木
参考例句:
  • They sat in the arbor and chatted over tea.他们坐在凉亭里,边喝茶边聊天。
  • You may have heard of Arbor Day at school.你可能在学校里听过植树节。
4 scenarios f7c7eeee199dc0ef47fe322cc223be88     
n.[意]情节;剧本;事态;脚本
参考例句:
  • Further, graphite cores may be safer than non-graphite cores under some accident scenarios. 再者,根据一些事故解说,石墨堆芯可比非石墨堆芯更安全一些。 来自英汉非文学 - 环境法 - 环境法
  • Again, scenarios should make it clear which modes are acceptable to users in various contexts. 同样,我们可以运用场景剧本来搞清楚在不同情境下哪些模式可被用户接受。 来自About Face 3交互设计精髓
5 gender slSyD     
n.(生理上的)性,(名词、代词等的)性
参考例句:
  • French differs from English in having gender for all nouns.法语不同于英语,所有的名词都有性。
  • Women are sometimes denied opportunities solely because of their gender.妇女有时仅仅因为性别而无法获得种种机会。
6 findings 4tYzV9     
n.发现物( finding的名词复数 );调查(或研究)的结果;(陪审团的)裁决
参考例句:
  • It behoves us to study these findings carefully. 我们理应认真研究这些发现。
  • Their findings have been widely disseminated . 他们的研究成果已经广为传播。
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