Le Zoom Vaporfly Elite La nouvelle chaussure Nike qui brise toute les loi de la Physique

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Runners who competed against those who wore Nike’s Zoom Vaporfly in the Olympics and other major marathons are also curious to learn more about the shoe.

“Athletes should be upset” if it’s illegal, said Hawi Keflezighi, the agent and brother of Meb Keflezighi, the 2004 Olympic marathon silver medalist from the United States. “But at the same time we’ve always believed in innocent until proven guilty.” Meb Keflezighi finished second to Galen Rupp at the 2016 Olympic trials before struggling through the race at the Rio Games with stomach problems. He wears Skechers.

Widespread doping is a more urgent concern for his brother than shoe technology, Hawi Keflezighi said, but he added: “What’s the tipping point? Where a shoe company says, well, we’re crossing the line here because we have a spring in our shoes or whatever?”

In truth, some experts said, debate about Nike’s latest shoes may only help increase sales to joggers and four-hour marathoners. A less expensive model than the Olympic shoe, with similar technology, goes on sale in June for $150.

“To me, it’s kind of a compliment when you are delivering a big enough benefit that people are starting to ask, is this unfair?” Schoolmeester said. “We don’t believe it is, but that’s pretty flattering.”

Jos Hermens, a former Dutch long-distance runner whose management company represents Kipchoge, the Olympic champion, Bekele and other top marathon runners, said he would be “surprised and disappointed” if the latest model were banned.

The sport should continue to welcome technological advances, he said, just as it did when tracks upgraded from cinder to synthetic rubber, pole vault poles evolved from bamboo to fiberglass and shoes began to incorporate air bladders and gels for cushioning.

“We’re not living in medieval times,” Hermens said. “There are going to be new techniques and materials. It’s time to show something to go forward instead of tipping backward.”