[Blood lipids and the incidence of hyperlipidemia in pilots]. / Lipidy krovi i chastota giperlipidemii u letnogo sostava.

The content of cholesterol and triglycerides was measured in healthy pilots. Over 1500 subjects were examined and age-related norms of the parameter were established. They were compared with published data. Physiological variations of cholesterol and triglycerides were related to age, height and body weight. The authors developed a method for diagnosing hyperlipidemia based on the agreement or disagreement between experimentally measured and theoretically calculated values. The authors maintain that hyperlipidemia can be diagnosed if the difference between the real and expected values is over 10%. The authors calculated the incidence of hyperlipidemia in all subjects examined (over 2100) and found that it was high: even in pilots of the age group 20-29 years hyperlipidemia occurred in 30% of subjects.

[Lower-body negative pressure tolerance of pilots with hypertensive-type neurocirculatory dystonia]. / Perenosimost' dekompressii nizhnei poloviny tela letchikami s neirotsirkuliatornoi distoniei gipertonicheskogo tipa.

Cardiovascular function and LBNP tolerance were studied in 68 pilots with hypertensive neurocirculatory dystonia and 26 healthy test subjects (controls). The studies demonstrated that most dystonic subjects had distinctly peculiar features of cardiovascular compensatory reactions during LBNP tests and that 86.8+/-4.1 % of them showed high tolerance to the exposure. Their cardiovascular function was compensated at the expense of a greater than in the controls increase in the arterial tone. There were, however, fairly many cases (13.2+/-4.1%) who displayed failures of cardiovascular compensatory reserves and who lost the ability to maintain long a high arterial tone in response to the exposure. The use of provocative tests is the only method that can help identify compensatory capabilities of the cardiovascular system of pilots with hypertensive neurocirculatory dystonia and thus qualify them for their professional activities.