Hypobaric chamber
（重定向自Hypobarism）
![Hypobaric chamber at the Biopol'H, in Catalonia (Spain), used with patients and sports-people who need treatment or training with reduced atmospheric pressure](/Images/godic/202501/19/Cambra_hipobàrica4836.jpg")
![Aviator's oxygen mask](/Images/godic/202501/19/Tightlysealedmask4836.jpg")
A hypobaric chamber, or altitude chamber, is a chamber used during aerospace or high terrestrial altitude research or training to simulate the effects of high altitude on the human body, especially hypoxia (low oxygen) and hypobaria (low ambient air pressure). Some chambers also control for temperature and relative humidity. Several companies build commercial and personal use chambers, most notably Hypoxico, Inc..