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.
But Moser set the hour record there, beating Merckx' record also set in Mexico City. The power reduction from lower oxygen pressure is more than offset by the lower drag.
But Moser set the hour record there, beating Merckx' record also set in Mexico City. The power reduction from lower oxygen pressure is more than offset by the lower drag.