If a running shoe made you 25 per cent faster, would it be fair to wear it in a race? What about 10 per cent? Or 2 per cent? The Nike Zoom Vaporfly 4%(...)

  Caster Semenya: new rule will impact the South African 800m World and Olympic champion. Photograph: Athit Perawongmetha/Reuters

The chairman of UK Athletics has warned that there are “a lot of questions and challenges” with the IAAF’s controversial new testosterone rules. He f(...)

 President of the Brazilian Olympic Committee and honorary member of the IOC Carlos Arthur Nuzman (right) arriving at police headquarters in Rio   to give a statement. Photograph: EPA/Antonio Lacerda

Police raided the home of Brazil’s Olympics chief Carlos Arthur Nuzman on Tuesday, accusing him of brokering a deal to bribe International Olympic Com(...)

 Paula Radcliffe:  faces having her 2003 women’s marathon world record of two hours 15 minutes 25 seconds expunged due to proposed new measures:  Photograph: Tim Goode/PA Wire.

Innocent athletes worried that their world and European records will be struck off received an apology on Tuesday from the official who proposed the r(...)

Sir Craig Reedie: “As was quite clear before Rio, the World Anti-Doping Agency does not have the power to ban Russia.” Photograph: Mike Egerton/PA Wire

Sir Craig Reedie has urged the International Olympic Committee to make a decision on whether to ban Russia from next year’s Winter Olympics at the “e(...)

What is unfair performance enhancement in sport? And can its governing bodies produce both a consistent definition, and workable rules to eliminate “c(...)

Questions have been raised about whether   Ethiopian Kenenisa Bekele used springs in his shoes at the recent Dubai marathon. Photograph: John MacDougall/AFP/Getty

The IAAF is to beef up its investigations into the next generation of marathon shoes, amid concerns some may contain illegal springs. The potential i(...)

 Independent chairman of the IAAF Taskforce Rune Andersen. Photograph: Afp/Valery Hache

Russia’s ban from international athletics competition is set to extend beyond the World Championships in London in August, the International Associati(...)

David Bedford  told MPs he made several attempts to tell Sebastian Coe about the Shobukhova case in August 2014. Photograph: PRU/AFP Photo

Sebastian Coe will defy a summons from the British House of Commons culture, media and sport select committee to answer further questions about what h(...)

Lawyer Richard McLaren delivers his second and final part of a report for the World Anti-Doping Agency (WADA), at a news conference in London. Photograph: Neil Hall/Reuters

The second and final part of an independent commission report, led by Canadian law professor Richard McLaren, was published on Friday and provided mor(...)

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