Vent3:
This is complete crap. The post 27 you referred to in the post above is very unimpressive. The test group is described as "trained individuals"--meaning what? How many, how well trained, etc.? We all KNOW that there's less o2 at altitude, and that distance performances suffer as a direct consequence...but what do you really know beyond that?
Further, this text group ran a "5 minute maximal exersion" session. Which is fine, but it's merely one data point. For a world class 1500m we're talking about 3.7s minutes, not 5 minutes--a huge difference given the subject at hand.
I would suggest that a MEANINGFUL test of all this would involve:
-tests to exhaustion at regular intervals: 1 minute, 2 minutes, 4 minutes, 8 minutes, or something even more fin-tuned. Why? To find the "average" point at which the benefit of altitude turns neutral, and when it then turns negative. One cannot do a single "5 minute" test and presume that it represents some linear effect--it clearly does not.
-tests of enough athletes, and of varied populations, so that we can actually get a sense not simply of the "average" effect of altitude, but of outlying cases--those most and least affected by it. Because, after all, if we're talking about Olympic 1500m finalists, we are NOT talking about average cases--we are talking about exceptional cases, outliers.
The real issue here is that altitude does NOT affect every athlete the same way--some suffer more, others less, and that becomes very interesting and critically important when talking about outlier cases.
Have you ever run on the Mexico City track? I have--I competed there in one race in 1975. I was not runing 3:40 pace (it was a 5000 race), but it was fascinating that there was very little effect for nearly a mile, but then it came on like a ton of bricks--once it hit, there was nothing "slow and steady" about it--nothing "linear" at all.
At the end of the day, Keino was a 3:34.9 1500 runner. The fast surface and lowered air resistance probably "more or less" balanced out whatever negative effect there was FOR HIM over that PRECISE DISTANCE. Maybe he's "really" a 3:34 flat guy, perhaps, who knows? But for the 10 millionth time, there is NOTHING else in his performance history to suggest that he was very much affected by competiting at altitude (either moderate, or in the case of Mexico City, significant), or that he was truly capable of surpassing about 3:34 for the distance.
You can juggle numbers till the cows come home, but it truly means zip.