少量、适度的慢跑对健康更有益
文章来源:未知 文章作者:enread 发布时间:2015-02-11 06:36 字体: [ ]  进入论坛
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Scientists studied more than 1,000 healthy joggers and non-joggers over a 12-year period.

科学家们对1000多名身体健康的慢跑者和不跑步的人进行研究,追踪时间超过12年。
 
Those who jogged at a steady pace for less than two and a half hours a week were least likely to die in this time.
 
But those who ran more than four hours a week or did no exercise had the highest death rates.
 
'Upper limit'
 
Analysing questionnaires filled out by all the people in the Danish study, scientists concluded the ideal pace was about 5mph (8km/h) and that it was best to jog no more than three times a week or for 2.5 hours in total.
 
People who jogged more intensively - particularly those who jogged more than three times a week or at a pace of more than 7mph - were as likely to die as those who did no exercise.
 
Researcher Jacob Louis Marott, from the Frederiksberg Hospital in Copenhagen, said: "You don't actually have to do that much to have a good impact on your health.
 
"And perhaps you shouldn't actually do too much.
 
"No exercise recommendations across the globe mention an upper limit for safe exercise, but perhaps there is one."
 
Scientists are not yet sure what is behind this trend - but they say changes to the heart during extreme exercise could contribute. 
 
'Brisk walking'
 
In their report, they suggest: "Long-term strenuous1 endurance exercise may induce pathological structural2 remodelling3 of the heart and arteries4."
 
Maureen Talbot, senior cardiac nurse at the British Heart Foundation, said: "This study shows that you don't have to run marathons to keep your heart healthy.
 
"Light and moderate jogging was found to be more beneficial than being inactive or undertaking5 strenuous jogging, possibly adding years to your life.
 
"National guidelines recommend we do 150 minutes of moderate-intensity activity a week.
 
"It may sound like a lot, but even brisk walking is good exercise. And if you're bit of a couch potato, this is a good place to start."


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1 strenuous 8GvzN     
adj.奋发的,使劲的;紧张的;热烈的,狂热的
参考例句:
  • He made strenuous efforts to improve his reading. 他奋发努力提高阅读能力。
  • You may run yourself down in this strenuous week.你可能会在这紧张的一周透支掉自己。
2 structural itXw5     
adj.构造的,组织的,建筑(用)的
参考例句:
  • The storm caused no structural damage.风暴没有造成建筑结构方面的破坏。
  • The North American continent is made up of three great structural entities.北美大陆是由三个构造单元组成的。
3 remodelling 965d241a7ef7fe602b7d6e8cc7bc56ae     
v.改变…的结构[形状]( remodel的现在分词 )
参考例句:
  • That shabby street needs remodelling. 那条陋街需要重建。 来自辞典例句
  • Function-forming and remodelling collagen, reticular and elastic fibres and the ground substances. 合成蛋白质,构成疏松结缔组织的纤维和基质成分。 来自互联网
4 arteries 821b60db0d5e4edc87fdf5fc263ba3f5     
n.动脉( artery的名词复数 );干线,要道
参考例句:
  • Even grafting new blood vessels in place of the diseased coronary arteries has been tried. 甚至移植新血管代替不健康的冠状动脉的方法都已经试过。 来自《简明英汉词典》
  • This is the place where the three main arteries of West London traffic met. 这就是伦敦西部三条主要交通干线的交汇处。 来自《简明英汉词典》
5 undertaking Mfkz7S     
n.保证,许诺,事业
参考例句:
  • He gave her an undertaking that he would pay the money back with in a year.他向她做了一年内还钱的保证。
  • He is too timid to venture upon an undertaking.他太胆小,不敢从事任何事业。
TAG标签: People week joggers
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