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Athletes attempt to break two-hour marathon barrier wearing custom-engineered Nike trainers - YouTube
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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
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Nike stirs the pot with 'gamechanger' running shoe in step with new rules | Athletics | The Guardian
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Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics | BBC Science Focus Magazine
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