Nike's Vaporfly high-tech shoe fuelling an athletic arms race

World Athletics cleared distance runners to wear the Nike Vaporfly but acknowledged that shoe technology poses a risk to the sport.To buy more cheap nike free run with cheap price, you can visit shoes2021.com official website.

High-tech shoes, like the heavily scrutinized Nike Vaporfly, contribute to an athletic arms race that forces runners to get the right gear or risk becoming uncompetitive, according to two-time Olympian Reid Coolsaet, one of Canada's top marathon runners.

"I'm going to wear them for sure. As I'm getting older, I need everything," he told The Current. "I'll run one marathon in the spring and it's gonna have to be fast enough to get to the Olympics. And if not, that's it for the Olympics."On Friday, World Athletics is expected to announce whether it will ban Vaporfly shoes from top competitions.

The track governing body says it's had a team investigating for months to determine if the shoe, which hit the market in 2017, is reasonably available to all runners and if it creates an unfair advantage for those who wear it. The swanky shoes, which cost around $330, have been shown by tests to make runners four per cent faster than the average shoe. The advantage is attributed to a combination of responsive foam and a carbon fibre plate in the shoe. Those components create a bounce by cushioning an athlete's foot when they step down, then propelling it back up and forwards.

The reported four-per-cent increase in speed may sound minimal, but Coolsaet says that can translate to two minutes in a marathon, which is "a big deal."In October, Kenyan marathoners Eliud Kipchoge and Brigid Kosgei both broke records wearing advanced models of the Vaporfly.

Kosgei beat the last world record by over a minute. And while it wasn't an official world record, Kipchoge became the first person to run a marathon in under two hours, completing the 42.2-kilometre race nearly two minutes faster than his previous record.