[Glycemia as a risk factor of reduced tolerance of hypoxic hypoxia in flight personnel].

The glycemic level was measured in 61 people exposed to hypoxic hypoxia. Three major types of glycemic responses were identified: type I--no change (15.79%); type II--hypoglycemia (49.12%), and type III--hyperglycemia (35.09%). The subjects with a low resistance to hypoxic hypoxia typically showed a low glycemic level (57.5 +/- 2.5 mg%. P < 0.05). It is suggested that three types of glycemic responses to hypoxia reflect three major pathways of biochemical adaptation of the body. It is recommended to study hormonal changes in people with hyperglycemic responses to hypoxia. This will help determine hormonal levels responsible for hyperglycemia and, consequently, develop methods of early detection of susceptibility to cardiovascular diseases and diabetes mellitus. This approach may contribute to medical expertise and rehabilitation of the flying personnel.