High performance management

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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Eliud Kipchoge 2:00:25

2017-05-06: 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…

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On the recalibration of world records: Brief thoughts

2017-05-03: A proposal to recalibrate the track and field world records by removing all records set prior to 2005 has caused considerable controversy. I offer…

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The sub-2 hour marathon attempt: The pacing strategy

2017-05-02: The Nike-Breaking 2 attempt will happen in Monza this weekend. I don't think a sub-2 is possible, but what will be fascinating is to…

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