Nike Vaporfly

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Nike Vaporfly shoe designs deemed legal by World Athletics

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MONACO (AP) — While the governing body of track and field acknowledged on Friday that shoe technology poses a risk to the sport, it cleared distance runners to keep wearing a favored Nike design.

World Athletics published updated guidelines which limited the use of prototype shoes like the high-tech Nike style worn in a sub-2 hour marathon run by Eliud Kipchoge in Vienna in October.

Independent research showed “sufficient evidence to raise concerns that the integrity of the sport might be threatened by the recent developments in shoe technology,” the Monaco-based governing body said.

An expert working group will be created to assess new shoes entering the market.

Still, the more established Nike style called Vaporfly, increasingly favored by top marathon runners, can be worn.

World Athletics set a guideline taking effect April 30 that a shoe must have been available to buy for at least four months to be eligible for use in competition.

“If a shoe is not openly available to all then it will be deemed a prototype and use of it in competition will not be permitted,” the statement said.

The Tokyo Olympics open in just under six months.

“As we enter the Olympic year, we don’t believe we can rule out shoes that have been generally available for a considerable period of time,” World Athletics president Sebastian Coe said, “but we can draw a line by prohibiting the use of shoes that go further than what is currently on the market while we investigate further.

“I believe these new rules strike the right balance by offering certainty to athletes and manufacturers as they prepare for the Tokyo 2020 Olympic Games.”

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