Nike Vaporfly shoe controversy sparks World Athletics to introd

  • Nike Vaporfly shoe controversy sparks World Athletics to introduce new rules ahead of Tokyo 2020 Olympics

    World Athletics has tightened regulations around the high-tech running shoes which have contributed to broken marathon world records while causing a wave of complaints from other runners.In a statement, the governing body said there would be "an indefinite moratorium" on shoes that do not meet the new requirements — which includes the shoe that Eliud Kipchoge ran his sub-two-hour marathon in.To buy more nike free runs men with cheap price, you can visit official website.

    However, World Athletics has decided not to implement a complete ban on the Nike Vaporfly shoes, which feature a carbon fibre plate and a thick foam midsole, but has ruled out the use of modified versions of the shoe and restricted the thickness of the sole to 40mm.

    Any shoe that "may not be compliant with the rules of the spirit of the rules," may be submitted for testing.In fact, competition referees have been given the power to request that an athlete hands over their shoes for testing immediately following a race that arouses suspicion.The rules have been designed to provide some certainty heading into the Tokyo Olympics, starting in July.

    Here's what that means for athletes in the lead up to the biggest sporting event on the calendar.World Athletics formed a panel to investigate the shoes after formal complaints by athletes and has been considering evidence from a group of experts.

    The head of the governing body Sebastian Coe said that the new rules preserve the integrity of the sport.

    "It is not our job to regulate the entire sports shoe market but it is our duty to preserve the integrity of elite competition by ensuring that the shoes worn by elite athletes in competition do not offer any unfair assistance or advantage," he said in a statement.Kenyan runners Eliud Kipchoge (two hours, one minute, 39 seconds) and Brigid Kosgei (2:14:04) have set new world records wearing versions of the shoe.

    The four fastest official men's marathon times in history, and seven of the top 10, have been set in the last 18 months by Nike sponsored athletes.Kipchoge also wore a modified version of the shoe for his historic sub-two-hour marathon in Vienna in October, although it did not count as an official record.Regulations state that running shoes "must be reasonably available to all in the spirit of universality of athletics and must not be constructed so as to give athletes any unfair advantage or assistance".