新训练方法可保证骑行者健康
文章来源:未知 文章作者:meng 发布时间:2010-08-31 02:53 字体: [ ]  进入论坛
(单词翻译:双击或拖选)

For competitive bicyclists with goals – whether competing in the Tour de France(环法自行车赛) or aiming for the podium(颁奖台,指挥台) at a local race – faster cycling comes from training regimens(生活规则,养生法) based on various zones of exercise intensity1. New research from exercise scientists at the University of New Hampshire has found that effective training regimens, which generally are created after expensive, time-consuming laboratory tests, can be developed from a relatively2 simple, do-it-yourself test. Using two tools most competitive cyclists already own -- a power meter, an increasingly common training device that mounts on a bicycle's rear wheel, and a stationary3 bicycle trainer – UNH graduate student Jay Francis '09 modified a three-minute all-out cycling test and found that it is as effective as more lab-intensive measurements for determining exercise intensity. The study, which was Francis's master's thesis, is published in the September 2010 issue of Medicine & Science in Sports and Exercise, the premier4 journal in the field.

"Power is a very unbiased(公正的) way of measuring your exercise ability, compared to speed, heart rate, or perceived exertion5(发挥,运用) ," says Francis. "A power meter measures how much power you are getting from your body to the road," independent of external conditions like hills, wind, or even what you had for lunch, he adds.

Francis and his advisor6, assistant professor Dain LaRoche, wondered if this increasingly common piece of equipment could be used to establish individualized exercise intensity domains7 – training zones that range from moderate to severe(严峻的,严厉的) – that were as accurate as those established with complex laboratory testing.

Francis used a three-minute all-out cycling test – "you just push and push and push and never let up" – which had previously8 shown to yield, in the last 30 seconds of the test, a power level that a cyclist can sustain for 20 to 30 minutes. He replaced the expensive and problematic laboratory equipment used in the original three-minute test with the cyclist's own bicycle, fitted with a power meter and used with a stationary trainer.

Testing 16 competitive cyclists, Francis compared their exercise intensity from the power meter test with classic laboratory-produced exercise intensity measures: blood lactate(乳酸盐) concentration and oxygen consumption. The power-meter and laboratory-based results correlated.

"You can go out with your own power meter and, for free, in just three minutes, you can do what would cost you $250 and take over an hour in the lab," says LaRoche.

With this data, says LaRoche, a cyclist can develop a range of individualized training zones that a coach will use to prescribe a particular workout. "You can't use heart rate, because everyone's is different, but you can say, 'we're doing a zone three workout today.' As a former coach I see the practicality of it," he adds. LaRoche previously worked with speed skaters and Nordic skiers for the U.S. Olympic Committee.

Francis took a more circuitous9(迂回的,绕行的) route toward exercise science. He received bachelor's and master's degrees from UNH in electrical engineering in the early 1990s, then worked in that field for many years while taking up cycling recreationally. He returned to UNH for a second master's degree, in exercise science, to help him pursue his goal of becoming a cycling coach. A self-described "mid-range amateur(业余的) cyclist," Francis launched his own coaching service in Merrimack upon graduation last year. Its name, FxD Coaching, riffs on an equation that engineering and exercise share: force times distance equals work.

The work he dedicated10 to his master's thesis paid off. LaRoche says it's unusual for a master's-level student to have an article accepted in the prestigious11 Medicine & Science in Sports and Exercise journal. More importantly, says LaRoche, Francis's work can now have an impact on athletes. "There's so much misinformation out there about how to train," he says. "Jay is providing a real service for mid-range cyclists."



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1 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。
2 relatively bkqzS3     
adv.比较...地,相对地
参考例句:
  • The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
  • The operation was relatively painless.手术相对来说不痛。
3 stationary CuAwc     
adj.固定的,静止不动的
参考例句:
  • A stationary object is easy to be aimed at.一个静止不动的物体是容易瞄准的。
  • Wait until the bus is stationary before you get off.你要等公共汽车停稳了再下车。
4 premier R19z3     
adj.首要的;n.总理,首相
参考例句:
  • The Irish Premier is paying an official visit to Britain.爱尔兰总理正在对英国进行正式访问。
  • He requested that the premier grant him an internview.他要求那位总理接见他一次。
5 exertion F7Fyi     
n.尽力,努力
参考例句:
  • We were sweating profusely from the exertion of moving the furniture.我们搬动家具大费气力,累得大汗淋漓。
  • She was hot and breathless from the exertion of cycling uphill.由于用力骑车爬坡,她浑身发热。
6 advisor JKByk     
n.顾问,指导老师,劝告者
参考例句:
  • They employed me as an advisor.他们聘请我当顾问。
  • The professor is engaged as a technical advisor.这位教授被聘请为技术顾问。
7 domains e4e46deb7f9cc58c7abfb32e5570b6f3     
n.范围( domain的名词复数 );领域;版图;地产
参考例句:
  • The theory of thermodynamics links the macroscopic and submicroscopic domains. 热力学把宏观世界同亚微观世界联系起来。 来自辞典例句
  • All three flow domains are indicated by shading. 所有三个流动区域都是用阴影部分表示的。 来自辞典例句
8 previously bkzzzC     
adv.以前,先前(地)
参考例句:
  • The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • Let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
9 circuitous 5qzzs     
adj.迂回的路的,迂曲的,绕行的
参考例句:
  • They took a circuitous route to avoid reporters.他们绕道避开了记者。
  • The explanation was circuitous and puzzling.这个解释很迂曲,让人困惑不解。
10 dedicated duHzy2     
adj.一心一意的;献身的;热诚的
参考例句:
  • He dedicated his life to the cause of education.他献身于教育事业。
  • His whole energies are dedicated to improve the design.他的全部精力都放在改进这项设计上了。
11 prestigious nQ2xn     
adj.有威望的,有声望的,受尊敬的
参考例句:
  • The young man graduated from a prestigious university.这个年轻人毕业于一所名牌大学。
  • You may even join a prestigious magazine as a contributing editor.甚至可能会加入一个知名杂志做编辑。
TAG标签: training exercise cycling
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