[Features of humoral regulation of metabolism during modelling of space flight factors].

Hormonal regulation of metabolism was investigated in test subjects of three age groups: group 1 included test subjects of 41-50 years old, group 2 test subjects of 50-57 years old, and group 3 test subjects of 26-33 years old. Test subjects from groups 1 and 2 were exposed to head down tilt (-8 degrees) as well as linear acceleration of 3 GZ for 1 min and exercises of 450-1050 kgm before and after the tilt test. Group 3 test subjects were exposed to neuro-emotional stress before, during and after the head-down test.

[Enzymes of energy metabolism in modeling of various factors of space flight].

The content of lactate dehydrogenase, amino transferases and creatine kinase was measured in the test subjects of three age groups (41-50, 50-57, and 26-33 years) exposed to head-down tilt, linear acceleration, exercise, and emotional stress. The enzyme activity increased in response to head-down tilt, acceleration and exercise. The enzyme content normalized under the influence of selected nutrients.