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hippy
I meant the oxygen pressure which is lower at 1800 meters above sea level compared to London where Wiggins took his record.
It is known that human body performs best at the altitude equal to the sea level.
If we were talking about taking 400m sprint record at that kind of altitude, lowered resistance of air (due to lower pressure) would be advantageous. However,in an hour record the effect of lowered oxygen level will be predominant.
Remember summer olympics in 1968? Well, I don’t. But it took place in Mexico City, which is elevated to 2250m. Most short sprint and jump records were set there at altitude. Not so much for endurance disciplines.
Wonder why they choose a Vélodrome at 1800 above the sea level.