2019  // Posts published in 2019

Head injury risk in rugby: U20 World Champs case study

Last week I described, in detail, the evidence and process that has led to World Rugby's High Tackle Framework and clampdown on high tackles. This time, I walk you through the case study of the recent U20s to illustrate the important concepts for risk identification.

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Protecting the rugby player’s head – the paradox of tackler height and head injury

A look at the World Rugby concussion prevention approach that involves sanctions for dangerous high tackles to protect both players. I explain the rationale behind the strategy, the data and the desired outcomes.

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Guest article: Prof Erik Boye on the bias in power in anti-doping

This is a guest post by Norweigian scientist Erik Boye, in which he raises concerns about the imbalance in power in antidoping and how it erodes confidence in the antidoping system

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The Sun Yang-Mack Horton-FINA affair: Don’t stare too long at the Sun (sorry…)

Sun Yang is the villain of the piece, with two protests creating a dramatic backstory at the World Championships. He is emblamatic of a loss of confidence in the system, but if you looks at only at Sun, the deeper problem may disappear. Here's why

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19 Jun 2019 Posted in Caster Semenya/Sports Science

The Semenya Decision: Full CAS report brief thoughts

The Court of Arbitration have released the full decision in the Caster Semenya case. I share here a few thoughts on how that verdict was reached, and how each side framed the issue a slightly different way to play to their strengths.

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Short thought on sport: Introducing The Science of Sport Podcast

The Science of Sport has a podcast! In case you missed, we have four episodes already, and the plan is a fortnightly discussion on some sports science issue that journalist Mike Finch and I deem to be engaging and of interest. This post summarizes what we've done so far!

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09 May 2019 Posted in Caster Semenya

Flawed evidence, robust research and scientific integrity in the IAAF’s DSD Regulations

This is a guest post, sort of. Well, it’s a post that was co-authored by myself, along with two other academics – Roger Pielke Jr from the USA and Erik Boye of Norway. You may recall that last year, about this time actually, the three of us tried to look at the data that was […]

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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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