Figure 1From: Fit for high altitude: are hypoxic challenge tests useful?Idoneità all’alta montagna: i test all’ipossia sono davvero utili?Reduction of O 2 - and N 2 -partial pressures in inspired air at btps conditions (100% saturated water vapour pressure depends only on temperature) with increasing altitude exposure (decreasing barometric pressure). Altitude diseases due to hypoxia can be compensated by O2-breathing and/or travelling in pressurized cabins.Back to article page