The Elevation Dilemma: Advantage Korea?

In many of his media appearances, Hong Myung Bo mentions that there are many “variables” this World Cup that he vowed to turn into opportunities, not liabilities. One such variable could be the new water break, and we painfully witnessed firsthand how important it is against Ivory Coast. The other major variable that Hong Myung Bo often brings up, the one I want to discuss today, is elevation. As a physician this is an issue that I love to discuss. Especially because true to Hong’s word, it seems that we lucked into a pretty decent setup to acclimate to elevation. I hope this might inject some optimism into us fans left deeply disillusioned due to coaching and FA shortcomings.

For context:

Korea plays its first two matches at the Estadio Akron in Zapopan, roughly 20 minutes out from Guadalajara. Our base camp is also in Guadalajara (Chivas Valle Verde) and since 5/18, our entire team (except Hwang In Beom who was rehabbing but is finally back in training thank GOD, Son who just joined yesterday, Kim Min Jae who joins 5/27, and Lee Kang In who joins after the Champions League final) have been training in Salt Lake City, which is at a comparable 1300-1400 meters in altitude. This stadium sits at an elevation of ~1570 meters. For context, this is roughly the elevation of Denver, the “mile high city”. Seoul sits pretty much at sea level as does most of Korea’s big cities. In 2010, many teams notoriously struggled to adapt to Johannesburg’s 1700-meter elevation. Our third match against South Africa is played in Monterrey, which sits at ~500-550 meters.

Why does this matter so much? Two reasons: oxygen and football physics.

The oxygen issue is the one most people are familiar with. Anyone who has traveled to high elevations knows the precautions necessary, or perhaps has experienced the headache and fatigue of altitude sickness firsthand. In Zapopan, the air holds roughly 15% less effective oxygen compared to sea level. For elite athletes operating at their absolute maximum oxygen carrying capacity max, that 15% deficit is a massive tax. Without proper acclimatization, the body tries to compensate by hyperventilating to force more oxygen into the bloodstream, triggering rapid respiratory muscle fatigue, a spike in heart rate, and major lactic acid burn in the legs much earlier in the match than usual. It takes several weeks to adapt, first by shedding fluid to concentrate red blood cells in hemoglobin (resulting in dehydration), then by building up extra hemoglobin and red blood cells in the bone marrow over a period of two to three weeks.

The second factor is one fans often overlook: football physics. Because the air is thinner it is less dense, which fundamentally alters fluid dynamics and aerodynamic drag. High up, the ball doesn’t encounter the same atmospheric resistance it does at sea leve, so it flies roughly 5% to 10% faster and travels noticeably further. More importantly, it doesn’t “bite” the air the same way, meaning spin-induced trajectories (e.g. the curve on a deep cross or the sudden dip on a free kick) become drastically minimized. Goalkeepers can misjudge flight paths, and midfielders accustomed to sea-level weight of passing can repeatedly overdo their long balls. By preparing in advance at Salt Lake City, then grounding ourselves at base camp in Chivas Verde Valle, we’re not only acclimating our lungs to the lower partial pressure of oxygen; we are also calibrating our players’ neuromuscular memory to the exact physics of the ball. Every pass, set piece, and shot they take in training will cut through the air with the exact same speed and trajectory they will experience on match day at Estadio Akron.

Korea’s advantages

While the KFA has been enraging dysfunctional this past 4 year cycle, we fell into quite a stroke of structural luck. A big advantage in Group A, particularly against a major near peer rival in Czechia, is 1) the order of the games and 2) Czechia being late to the base camp selection party.

The order works to our advantage because we will have spent about a month at ~1500-1600 feet before traveling DOWN to Monterrey’s more normal elevation – a huge physiologic luxury. It’s probably slightly better than doing Monterrey first then going to Guadalajara.

Now for what could be a major point of advantage: Czechia, unfortunately, did not get to select a base camp when all the other teams did (neither did Turkey, BiH, and Ukraine). UEFA delayed their final World Cup playoffs (to prioritize the UEFA league) so these four teams, alongside the intercontinental playoff teams, were left picking from the leftover scraps of the FIFA base camp catalog. Czechia had to settle for a base camp at Mansfield Multipurpose Stadium in Mansfield, Texas – this city sits at a relatively insignificant elevation of just 180 meters above sea level. We get to spend a solid month quietly incubating at 1300-1600 meters in Utah and Chivas Verde Valle. Czechia will spend the entire group stage in a sea-level baseline. Because of the tournament’s heavy hub-and-spoke travel model, Czechia will have to fly into the high altitude of Zapopan just a couple of days before our opening match, play 90 minutes in the crazy elevation, and then immediately fly right back down to sea level in Texas. They have to repeat this exhausting, altitude-shifting travel process for every single group game.

The question is, of course, will our coaching staff properly exploit these advantages?

What are the other teams doing?

We didn’t discuss Mexico and South Africa much yet. Mexico’s on home turf so their players, especially the Liga MX ones, will know all the stadiums and how to adapt to the environment. They set up their base camp in Centro de Alto Rendimiento in Mexico City. This is their equivalent of Paju – where their national team and youth squads train each international break.

South Africa is taking a bit of an interesting approach – they have done the classic “overindexing” strategy where they chose a very high elevation site at baseline. They went for CF Pachuca, over 2400 meters in elevation. By living and training roughly 860 meters higher than the Zapopan match venue (and nearly 2000 meters higher than Monterrey), South Africa is intentionally putting their squads through extreme altitude and intense hypoxia (oxygen deprivation) forcing their bodies to rapidly build up hemoglobin and red blood cells and driving their hematocrit levels even higher than ours to maximize oxygen-carrying capacity.

From a medical standpoint I am kind of glad we chose the methodology we did (not this overindexing method), facilitated by the luxury of playing all first two games in Guadalajara. First of all, ball mechanics differ greatly from 2400 meters vs 500. Second, Pachua is a relatively cool place; Monterrey is warm and humid. According to Google is Monterrey is nearly 15 degrees warmer on average than Pachuca. This will certainly result in different set of physiologic challenges, even if they will have plenty of oxygen carrying capacity against us. I like that we are going for consistency at Verde Valle in Guadalajara. We aren’t shocking our systems, and we aren’t guessing on ball mechanics. In a tournament of variables as Hong Myung Bo mentioned, perhaps stability is the highest form of optimization.