A foot injury prompted Tobi Amusan to start wearing bouncy longer-distance Adidas shoes instead of track spikes
Nigeria’s Tobi Amusan reignited the debate about track and field’s new super shoes as she unexpectedly shattered the 100m hurdles world record in Eugene.
Adidas bill the Adizero Avanti as “like hitting fast-forward” and promise the shoes “provide a snappy, propulsive ride with high traction and reduce fatigue, so you finish 5km and 10km races with a kick”. There is nothing illegal about the shoes, with currentrules dictating that sprint spikes cannot have soles thicker than 20mm – the same as the Adizero Avanti.
The new breed of super shoes do appear to particularly help hurdling events, with Sydney McLaughlin alsoThere was another world record at the finale of these championships as Duplantis cleared 6.21m. The Swedish vaulter won another gold medal – and, like Amusan, left Eugene with a bonus cheque of $100,000.Photograph: Ben Stansall/AFP/Getty Images
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