![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://images.immediate.co.uk/production/volatile/sites/4/2021/08/Alamy_2F3Y8J0-crop-ff47efc.jpg)
Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics | BBC Science Focus Magazine
![Nike stirs the pot with 'gamechanger' running shoe in step with new rules | Athletics | The Guardian Nike stirs the pot with 'gamechanger' running shoe in step with new rules | Athletics | The Guardian](https://i.guim.co.uk/img/media/88944abba122485af1bbcadbab61a324bb2ee3eb/1027_1999_2593_1556/master/2593.jpg?width=620&quality=85&fit=max&s=76b89c4982623f4a3fc7f33c7e8e6c6a)
Nike stirs the pot with 'gamechanger' running shoe in step with new rules | Athletics | The Guardian
![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&quality=85&fit=max&s=ec2c0b6a998fd39f7e1c4add42395ce2)
Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
![World Athletics denies tipping off Nike over new running-shoe regulations | Athletics | The Guardian World Athletics denies tipping off Nike over new running-shoe regulations | Athletics | The Guardian](https://i.guim.co.uk/img/media/8dd989f70bc471a8dd2970d87c5338501bb88af1/142_217_3250_1951/master/3250.jpg?width=620&quality=85&fit=max&s=f09dd8d6a0964e58159988fb8ccfe515)
World Athletics denies tipping off Nike over new running-shoe regulations | Athletics | The Guardian
![World Athletics gives seal of approval for controversial Nike Vaporfly shoes | Athletics | The Guardian World Athletics gives seal of approval for controversial Nike Vaporfly shoes | Athletics | The Guardian](https://i.guim.co.uk/img/media/e0330d85e02744f2f3f5048839c4f4562f58fb45/0_0_3500_2100/master/3500.jpg?width=1200&quality=85&auto=format&fit=max&s=67730f3216754dd7fbeb720e9376def7)
World Athletics gives seal of approval for controversial Nike Vaporfly shoes | Athletics | The Guardian
![Running: Nike Vaporfly 4% trainers boost elite athletes' performance by up to 1.7%, study finds | Daily Mail Online Running: Nike Vaporfly 4% trainers boost elite athletes' performance by up to 1.7%, study finds | Daily Mail Online](https://i.dailymail.co.uk/1s/2021/04/22/12/42079346-9499347-Runners_will_know_that_donning_a_new_pair_of_shoes_makes_you_fee-a-36_1619092231273.jpg)