Physiology  // Posts categorised as Physiology

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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24 Mar 2019 Posted in High performance management/Physiology

On Transgender athletes and performance advantages

Ok, here goes. I’ve been meaning to write this for a while, but time and energy have not allowed it. But I’ve just been involved in some lively Twitter discussions, ultimately productive, so I’m going to try to share some thoughts around this issue of transgender females (male-to-female transitioning people) competing in women’s sport. It’s […]

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4-bullet Friday: More on the age-elite athlete thing, you all rock, plus “My most interesting” links for you

Real quick-fire today, with some links and things I found interesting this week: On Wednesday, I wrote a short thought on whether the conventional wisdom around how elite athletes “expire” and fade with age may be outdated. Seems to me that we hear a lot more about older athletes succeeding, and even dominating, than before. […]

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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 physiology of the cold: Why might women out-‘survive’ men?

Boston 2018 was one for the archives. A brutally cold, wet and windy day made for incredible, unpredictable elite races, and a whole lot of DNFs! There's a theory that women did better in this regard than men, and this post explores cold physiology, and what factors MIGHT explain why women MIGHT be able to handle the extreme cold better than men

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Pacing physiology and the limit to performance: A #fourminute mull

The latest four minute mull explores pacing strategies, physiology and fatigue. In so doing, I offer a theory for the limits to human performance existing at the point where the "reserve" that physiology maintains is no more, the endspurt disappears, and humans are at the limits of what is physiologically possible.

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