BONUS SHORT: Altitude and the Mexico Problem. The Science Behind England's Sunday Showdown

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Show notes

A bonus hype show ahead of Sunday's World Cup round of 16 between Mexico and England, where altitude has become the story everyone is talking about. Sparked by Thomas Tuchel's lament over a FIFA rule and the team's potential "smash and grab" altitude adaptation theory, Ross explains why the idea of sneaking in and out before altitude bites has no supporting evidence at all. You only ever get better from the moment you arrive, and so FIFA compelling England to travel earlier is quietly helping them!

From there, Ross unpacks the physiology: lower air pressure, less oxygen reaching the muscles, a compromised VO2 max ceiling, and everything performed at a higher relative intensity. Drawing on repeated-sprint studies and FIFA match data from Mexico's altitude venues, he builds and tests a hypothesis, that visiting teams run less at high speed and make fewer sprints, with a dose-dependent decline as altitude rises. The small, admittedly limited study illustrates how Mexico's altitude adapted advantage might manifest in sprint and high speed running differences from the start, getting progressively larger. Ross closes on what England can realistically do tactically to respect the physiology.

Links

• The Guardian article on England's foiled smash-and-grab paradigm, fortunately for them!
• This is the study I've seen cited in support of the late-arrival theory, even though its conclusion actually refutes the advantage!
• A study showing that you only get better, over 6h, 17h and then 48h, so get in as soon as you can
• Another one, this time over longer time frames, looking at how we improve with more time at altitude
• Brosnan study on repeat sprint interactions with altitude and rest period
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