A range of high-tech Nike shoes which have revolutionized running have escaped a ban, but advanced prototypes and trainers with thick soles and several carbon fiber plates to boost their spring are to be outlawed in competition in a bid to preserve the integrity of athletics.
A World Athletics review panel has investigated the technology in a range of leading trainers and has passed Nike’s controversial Vaporfly range, but it has instigated an “indefinite moratorium” on any shoes with soles thicker than 40mm or with more than one rigid plate embedded in the shoe to enhance its spring.
From April 30, it will also ban from competition any shoes that have not been on public sale for four months.
The new rules mean the exclusive Nike prototype shoes dubbed the Alphafly, worn by Eliud Kipchoge when he became the first person to run a sub-two hour marathon, would now be deemed non compliant.
“Where World Athletics has reason to believe that a type of shoe or specific technology may not be compliant with the rules or the spirit of the rules, it may submit the shoe or technology for study and may prohibit the use of the shoe or technology while it is under examination,” said a World Athletics statement Friday.