Introduction to Glider Flying > Introduction to Glider Flying > Medical Factors Associated with Glider Flying > Hypoxia > Stagnant Hypoxia

Stagnant hypoxia is an oxygen deficiency in the body due to the poor circulation of the blood. Several different situations can lead to stagnant hypoxia, such as shock, the heart failing to pump blood effectively, or a constricted artery. During flight, stagnant hypoxia can be the result of pulling excessive positive Gs. Cold temperatures alsocan reduce circulation and decrease the blood supplied to extremities.