Running

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

2018-04-19: Boston 2018 was one for the archives. A brutally cold, wet and windy day made for incredible, unpredictable elite races, and a whole lot…

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2018 Boston Marathon: Live splits and coverage

2018-04-16: Welcome to my live coverage of the 2018 Boston Marathon, where I'll post splits, projections and thoughts as both races…

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

2018-02-15: The latest four minute mull explores pacing strategies, physiology and fatigue. In so doing, I offer a theory for the limits to human performance…

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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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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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