![Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics - BBC Science Focus Magazine Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics - BBC Science Focus Magazine](https://c02.purpledshub.com/uploads/sites/41/2021/08/Alamy_2F3Y8J0-crop-ff47efc.jpg?w=1029&webp=1)
Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics - BBC Science Focus Magazine
![Nike Epic React Flyknit 2 side view with red logotype – Stock Editorial Photo © ifeelstock #285804350 Nike Epic React Flyknit 2 side view with red logotype – Stock Editorial Photo © ifeelstock #285804350](https://st4.depositphotos.com/1083585/28580/i/1600/depositphotos_285804350-stock-photo-nike-epic-react-flyknit-2.jpg)
Nike Epic React Flyknit 2 side view with red logotype – Stock Editorial Photo © ifeelstock #285804350
![Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian](https://i.guim.co.uk/img/media/f5670c6db81bb06a5192775ad68df5503dafde3e/1191_273_2309_1386/master/2309.jpg?width=465&dpr=1&s=none)
Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
![Paris, France - Jul 8, 2019: Athlete man hand holding presenting new running shoes Nike Zoom Fly Flyknit against green background - view from above of the shoe Stock Photo - Alamy Paris, France - Jul 8, 2019: Athlete man hand holding presenting new running shoes Nike Zoom Fly Flyknit against green background - view from above of the shoe Stock Photo - Alamy](https://c8.alamy.com/comp/W40K11/paris-france-jul-8-2019-athlete-man-hand-holding-presenting-new-running-shoes-nike-zoom-fly-flyknit-against-green-background-view-from-above-of-the-shoe-W40K11.jpg)