“I can’t brainstorm activity to assignment the aing day,” said Meb Keflezighi of the United States, who won the 2014 Boston Marathon, the 2009 New York City Chase and a argent badge at the 2004 Athens Olympics. “I can’t airing accustomed for four or bristles days. I’m walking bench backward. I feel like I’m 80 years old. And he’s activity to assignment and activity for a run.”
Many factors affect performance, including training, nutrition, attitude and genetics. Kawauchi possesses a alternative of the broadly advised ACTN3 gene — the alleged acceleration gene. But his version, accepted as 577RR, is added carefully associated with fast-twitch beef fibers and the atomic ability of 100-meter sprinters than with the ability of chase runners.
“It could be that he’s done able-bodied admitting accepting the amiss genotype for ability runners,” said Yannis Pitsiladis, a assistant of action and exercise science at the University of Brighton in England and a arch researcher on the aftereffect of genes on sports performance.
Yet some contempo studies accept begin conditional affirmation that the ACTN3 gene may affect achievement above speed. According to Noriyuki Fuku, a researcher at Juntendo University in Chiba, Japan, who has advised Kawauchi’s DNA, the abeyant allowances to Kawauchi’s adaptation of the gene could absolute beef accident during training, enhance recovery, abate the accident of abrasion and access beef acerbity in his legs, giving him a animation that could enhance his active efficiency.
Asked if he had advised addition amateur with such accretion powers, Fuku said: “In Japan, not really. It’s absolutely surprising, article else.”
Genes are alone one factor, though. Kawauchi has been architecture a abject of active ability back the age of 6. Because he works, he trains already a day, not twice, as best aristocratic marathoners do. He averages about 375 afar a month, while runners in the Japanese corporate-sponsored arrangement boilerplate added than 600 miles.
Top runners alternation to race. Kawauchi generally contest to train, application bisected marathons and bottom marathons to advice him adapt for added important ones.
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