体育锻炼对学习成绩有帮助

Recently we told you about a finding that more years of school could help students get higher scores on intelligence tests.That was the finding of a study of teenage males in Norway.Now,other research shows that physical activity may help students do better in their classes.

最近我们讲述了关于上学时间更长能够帮助学生在智力测验中得到更高分数的一项发现，这是针对挪威青年男子的一项研究。现在其它研究表明，体育锻炼可能帮助学生在功课上做得更好。

The research comes as educators in some countries are reducing time for activities like physical education.They are using the time instead for academic subjects like math and reading.

这项研究正值一些国家的教育工作者减少体育课一类活动时间这样一个时期。他们把这些时间转而用于数学、阅读一类的学科。

Researchers at VU University Medical Center in Amsterdam reviewed the results of fourteen studies.Twelve were from the United States,one from Canada and one from South Africa.

阿姆斯特丹自由大学医学中心的研究人员重新评估了14项研究的研究结果。其中12项来自美国，一项来自加拿大，一项来自南非。

The studies appeared between nineteen ninety-seven and two thousand nine.They included more than fifty-five thousand children,ages six to eighteen.

这些研究发表于1997年至2009年期间，涉及了超过5.5万名年龄在6到18岁的儿童。

Researcher Amika Singh says the studies showed a link between physical activity and scores on subjects such as math,English and reading.

研究人员阿米卡·辛格(Amika Singh)表示，这些研究表明了体育锻炼和数学、英语和阅读一类学科分数之间的关联。

AMIKA SINGH:"Based on the results of our study we can conclude that being physically active is beneficial for academic performance."

辛格：“根据我们的研究结果，我们可以得出结论，体育锻炼对学习成绩有帮助。”

Ms.Singh offers some possible explanations.

辛格女士提供了一些可能的解释。

AMIKA SINGH:"There are,first,physiological explanations,like more blood flow,and so more oxygen to the brain.Being physically active means there are more hormones produced like endorphins.And endorphins make your stress level lower and your mood improved,which means you also perform better."

辛格：“第一种是生理方面的解释，如血液流动增加，所以向脑部的供氧增加。进行体育锻炼意味着产生更多激素，例如脑啡肽。脑啡肽使得你压力水平降低，情绪改善，这也就意味着表现更好。”

Also,students involved in organized sports learn rules and how to follow them.This could improve their classroom behavior and help them keep their mind on their work.

此外，参加有组织运动的学生能够从中学到规则以及如何遵守规则。这能够提高他们的课堂表现，帮助他们专心学习。