The governing body of track & field is expected to impose some restrictions on the use of the Eager Beavertons’ revolutionary sneaker by elite athletes while continuing to allow its use by recreational athletes. In effect, it will only certify records that do not use the Vaporfly technology, though it may also clarify what it will accept as a permissible depth of foam or the use of carbon plates in competition.

The ruling, not yet official, means that shoes with some kind of rebound technology will become significant commercially. A recent New York Times study found that in races during 2019, ... Log in to view full article.