Posture that the running shoes can change the mankind to run that U.S.A. discovers

Posture that the running shoes can change the mankind to run that U.S.A. discovers
Run, it is fine barefoot that wear running shoes to be kind on earth?
Since the running shoes come out, the dispute about this question has not been stopped. Though the researchers of Harvard University can not provide the final conclusion, find, the running shoes have really changed the human running posture.
This discovery was published and published this week >Magazine .
Extensive investigation
When people run, every and collides foot once on the ground, will bring a impact to body. If the heel lands first, will bring in the twinkling of an eye more than the shock power of several times of the weight. " L It seems here that someone holds the hammer, with the strength of weight two, triple, strike on your heel ruthlessly, " " Interesting science " R Website 27 Japan quotes the expert of humanbeing evolution of Harvard University Daniel Liberman's words report .
The built-in damped device can reduce this kind of shock power behind many running shoes, but how does the person not in running shoes reduce and assault the impact on health?
Researchers choose 5 kinds of persons, count their running way. These 5 kinds of persons are separately: The professional athletes of U.S.A. in running shoes all the time; Used to running barefoot as a child, nowadays but Kenya athlete in modern running shoes; Have worn the running shoes, has changed into fans U.S.A. that runs now; Wear Kenya of shoes, run fan never in shoes.
Look for the difference
Researchers find, the heel lands first to used to the person in running shoes while usually running, even if take off the shoes so. But the person whose mere foot runs of those habits is that the toe or sole land first.
Shock power to the health when Liberman's heel or toe compared with colleague lands first. They find heel land first shock power to bring body very large, it wears shoes to be can loud. Contrary to it, if toe burn first, hardly will bring to body what bludgon into.
Researchers think, the mere foot runner lightens shock power in such a manner that the toe lands first, they will concentrate attention on the tiptoe even more while taking every step, this means too paces were slim and more graceful when they ran, there is function of reducing shock power too.
" L We guess, before it is high to help the air cushion shoes not to be invented, people run in such a way, " R Liberman says.
It is difficult to make the judgement
Christopher MacDougal 2009 Publish the best seller every year>,Drive " L The barefoot runs " R Agitation. He points out in the book, it benefits the body even more that the mere foot runs. But researcher think, used to, wear people that shoes run suddenly already " Return to nature " ,May not adapt to and damage the heel string.
Liberman says, evidence does not prove instantly the running shoes will increase and is injured probability, also evidence does not indicate all foot runs and protects the body, so who is excellent who plays the final conclusion badly and difficultly.
Sports medical science professor Kathy and Creegan of University of Virginia has said, the mere foot is in the hard injured health of running of surface of artificial object. But Liberman says, because when the mere foot runs, the toes of people burn in the ground first, the health needn't almost be born and struck strength, so Creegan's conclusion is incorrect . He say even if people run, have no relations even at the hard metal sheet. (Jing Jing )
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