March 30, 2023 10:57 am

Amusan shatters 100m hurdles world record to revive super shoes debate

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.

On a night when Mondo Duplantis also broke his own pole vault world record, Amusan ran a staggering 12.12 seconds in her semi-final to beat Kendra Harrison’s old best by 0.08 sec – smashing her personal best time by nearly three-tenths of a second.

Immediately after the race, the former world 200m and 400m record holder, Michael Johnson, wondered whether the timing system at Hayward Field was off. He was far from alone. However it transpired that Amusan had been given a boost by using Adidas Adizero Avanti shoes, which are designed for 5km and 10km runners, rather than track spikes.

After running even faster to win gold in the final nearly two hours later, Amusan revealed she had accidentally stumbled on the idea of using the shoes, which have extra bouncy foam, after injuring her foot.

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 current World Athletics rules dictating that sprint spikes cannot have soles thicker than 20mm – the same as the Adizero Avanti.

Until now these shoes have always been used for long races, but the benefits for Amusan were obvious as she flew high over the hurdles and into the record books. “My abilities are not centred around spikes,” said the Nigerian, who ran 12.06 in the final, only for the wind speed of +2.5m/s to make it ineligible for record purposes.

“I had patella fasciitis at the beginning of the season so that set me back for a while,” Amusan added. “I spoke to Adidas and requested if I could get spikes with a softer sole. They recommended a lot of stuff and I feel comfortable in [the shoes], so I was using them basically the entire time.”

The new breed of super shoes do appear to particularly help hurdling events, with Sydney McLaughlin also breaking the women’s 400m hurdles record wearing New Balance’s latest model earlier this week.

There 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.

Sweden’s Mondo Duplantis reacts as he sets another world record in the men’s pole vault.
Sweden’s Mondo Duplantis reacts as he sets another world record in the men’s pole vault. Photograph: Ben Stansall/AFP/Getty Images

“I’ve gotta save the best for last,” said Duplantis, who beat his nearest rival Christopher Nielsen by an astonishing 27cm. “You get quite a bit of pressure on you when you’re the only person competing in the entire track. It’s an honour when people stay in their seats when it’s literally only me on the track. It was quite a pleasure jumping out there, honestly.”

Asked how he would celebrate, the Olympic and world champion smiled. “I’ll probably stay up kinda late,” he said. “Those kinda performances probably call for something fun.”

Earlier in the day, Jakob Ingebrigtsen made up for his 1500m defeat to Jake Wightman with a dominant performance in the 5,000m. The race was never fast enough to blunt the Norwegian’s finishing speed, and he was able to take the lead with 900m to go and gradually ramp up the pace before kicking for home.

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Such was his dominance he was even able to celebrate by pointing his finger at the crowd and easing down before crossing the line. “I didn’t want a sprint finish because I wanted to prove I am the better guy,” said Ingebrigtsen, who beat the Kenyan Jacob Krop into silver by 0.74 sec. “It was a great race but I wanted and I needed that. It felt really amazing.”

Elsewhere the German Olympic champion, Malaika Mihambo, continued her dominance in the women’s long jump by soaring to a second successive world gold with a final leap of 7.12 metres.

Mihambo was on the brink of exiting the competition after faulting on her first and second jumps but recovered well to register a valid third attempt of 6.98m. Ese Brume of Nigeria claimed silver with 7.02m, while Brazil’s Leticia Oro Melo took bronze with 6.89m, a personal best.

Afterwards, World Athletics revealed that the record for the number of countries winning gold medals at one championships had been broken, with 29 countries taking turns on the top step of the podium, compared with 26 in 2017. Peru, Kazakhstan and Nigeria won their first ever gold medals, while India and Burkina Faso enjoyed their best ever medal performances in winning silver.

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