African running  // Posts categorised as African running

On DSDs, the theory of testosterone, performance the CAS ruling on Caster Semenya

The Caster Semenya controversy, or more accurately, the issue of DSDs in women's sport, is the most complex issue ever faced by sport. I share here my views, start to finish, in what I hope is a comprehensive overview of the concepts, the evidence, and the weighting of the factors that led to CAS' decision to support the IAAF regulation.

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A short thought on sport: Evaluating Eliud. Is Kipchoge a next-gen 2:02 marathoner, or a mid-2:04 runner in a technologically superior shoe? Who knows?

Eliud Kipchoge is a physiological marvel. The Nike Vaporfly is a technological marvel. Both improve marathon performance. Except these statements can't both be true, and the implications for the integrity of running and how we evaluate performances, can't be ignored. This is an article on why that is.

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We need to talk about East African runners and general trust vs skepticism in performances

The London Marathon on Sunday will almost certainly be won by an East African. This group may be one of the most fascinating in all of sports science, such has their distance dominance been. But in a time when doping stories tarnish their success, what are we to make of their performances, and how should they be trusted or doubted? This article explores skepticism and trust in performances

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Asbel Kiprop banned for four years: The Final Decision and anti-doping insights

Asbel Kiprop, former Olympic and three-time World 1500m champion, has been banned for four years for doping. Here are my insights on the Final Decision and some concepts it raises about anti-doping.

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Short Thought on Sport: Asbel Kiprop’s “positive test” and a chance for the biological passport to shine (or not)

I’m back with a short thought on sport! Turns out these haven’t always been short enough to allow me to do them as often as I’d have liked, apologies. But let’s see how this one goes! So Asbel Kiprop is due to hear his fate any day now. On March 23rd, I read an article […]

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The aging of elite performance: “Geriatric champions” and have the rules for getting older changed?

Yesterday, I was sent this link. It says that Dwain Chambers, he of THG and a doping ban in 2004 (!), is making a comeback, hoping to qualify for Team GB at the European Indoor Championships. At the age of 40. Well, almost 41. My first thought was “Of course he is”, and then upon […]

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Letter to BJSM reinforcing call for retraction of IAAF research on testosterone in women

Along with two prominent scientists, we have recently called for the research study on testosterone's effects in women athletes to be retracted. This research is part of the IAAF's policy on hyperandrogenism in athletics, but we have analyzed aspects of the study, and discovered significant and numerous errors. This article describes those errors, and calls for scientific integrity and transparency from both the IAAF and the British Journal of Sports Medicine.

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The pursuit of the sub-2 marathon: Where to next?

Where do we go next? Now that Eliud Kipchoge has taken us to the brink of a sub-2 hour marathon, have the boundaries of human endurance been recalibrated? Can we expect a 1:59 soon? Or did the Nike staged event simply move some of the boundaries aside? This piece looks at potential benefits, and asks whether we should expect to see a speeding up, or a slowing down, in the foreseeable future?

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Eliud Kipchoge 2:00:25

Eliud Kipchoge has run a marathon in 2:00:25, coming within sight of breaking the 2-hour barrier. How did he do it, and what might we expect in future? This post analyzes the splits, the tactics and the prospects for the 1:59:59 in the future.

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