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Shane Keating, Associate Professor, UNSW Sydney

Is the shallow pool in Paris really slowing Olympic swimmers down? Here’s what the science says

There has been plenty of rain, sweat and tears shed at the Paris Olympics this week. But the pool at the heart of La Defénce Arena has suffered a drought of world records that has athletes and officials scratching their heads.

After five days, Paris 2024 has seen only a single world record fall in a swimming event. That compares with six new swimming world records set at Tokyo in 2021 and eight at Rio in 2018. Even the much-hyped women’s 400 metre freestyle – billed as the “race of the century” – failed to topple any personal bests from the three most recent world-record holders, Ariarne Titmus (Australia), Summer McIntosh (Canada) and Katie Ledecky (United States).

To earn a spot on the winners’ podium, of course, place – not pace – is what matters. But the near-absence of the letters WR alongside any of the finishing times on the Olympic scoreboard has coaches, competitors and commentators searching for a culprit.

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