High performance management

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

2018-08-02: 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…

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Can we trust the Tour, Sky and Chris Froome: Le Monde Op-Ed

2018-07-06: The French newspaper Le Monde asked me to write an Op-Ed on the 2018 Tour de France, specifically addressing the question "Can we trust Chris…

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Team Sky and Marginal Games

2018-01-15: UKAD sent a scathing letter to British Cycling, outlining a series of improper and sub standard processes and governance issues in the aftermath of their…

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Head injuries part 2: What makes a tackle risky?

2017-07-31: This is the second installment in a series of articles translating recent research I published on the risk of head injuries during rugby. This…

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Head injuries in Rugby, Part 1: Principle & high-level view

2017-07-27: World Rugby recently changed and clarified laws around the high tackle in an attempt to reduce the number of concussions in the sport. That…

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An Open Letter to Athletics South Africa: Address the non-selection controversies for the sake of athletes

2017-07-25: Athletics South Africa, the governing federation for Track and Field in South Africa, recently announced the SA squad for the upcoming World Athletics championships in…

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Testosterone, performance & intersex athletes: Will the IAAF evidence be enough?

2017-07-05: In 2015, the Court of Arbitration set aside an IAAF policy that required female athletes to have a Testosterone level below a cut-off threshold. …

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Concussion in cycling: A challenge for culture & policy change

2017-05-16: Dramatic footage in the aftermath of a Tom Skujns crash in the Tour of California triggered some discussion around cycling's concussion protocols. Some thoughts…

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

2017-05-08: 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…

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