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Tokyo Olympics 2020: Nike prototype Vaporfly shoe banned by World Athletics but current version going to Games-Sports News , Firstpost
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Nike Vaporfly trainers worn by Eliud Kipchoge and Brigid Kosgei are form of 'technical doping' | Sport | The Times
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Record breaking Nike sneaker sparks competitive advantage debate ahead of New York City Marathon | Fox News
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Brigid Kosgei Wins 2018 Chicago Marathon in 2:18:35, Becomes 9th Woman To Break 2:19:00 As No Americans Break 2:30 - LetsRun.com
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Former marathon world record holder says hi-tech shoes are 'like doping' and calls for ban | The Independent
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Even I set PB in the £240 Nike trainers worn by Eliud Kipchoge and Brigid Kosgei which are dividing athletics | Sport | The Times
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