[Prediction of G-load (Gz) tolerance based on various functional tests].

The purpose of the present study was to analyze and sum up the data on the methods of predicting g-tolerance (+Gz) utilizing various functional tests within the program of medical flight certification. The study involved 478 fighter pilots who were examined at the Central Military Scientific/Research Aviation Hospital. The age of examinates varied from 25 to 50 years (35 yr.

[Evaluation of the effectiveness of a universal pneumatic stimulating system as new therapeutic and rehabilitative means for flying personnel].

Therapeutic and prophylactic efficacy of UPS-1600 was evaluated in relation to various types of diseases. The work involved 86 in-patients who were examined and treated in the Central Military Scientific Research Aviation Hospital. 66% of the patients exhibited a positive therapeutic effect of pneumo-massage combined with the routine methods of treatment.

[Long-term G loads (+Gz) and the prediction of their tolerance].

The impacts of comparatively low (1.5-3 G) though prolonged (up to 40 min) "head-pelvis" (+Gz) accelerations at the final and most challenging stage of space flight, i.e.

[Hemodynamic types in pilots and their clinical and expert-evaluation significance].

At the present time two approaches to the hemodynamics types can be distinguished in the literature: some authors maintain that they are variants of the norm, while others claim that they emerge in the course of disease. The purpose of the present investigation was to study the different viewpoints and to clarity the clinical and diagnostic role of hemodynamics types in aviation medicine. Altogether 293 pilots were examined, 49 of which were essentially healthy and 244 had various cardiovascular pathologies.

[Hemodynamic reactions to modified orthostatic test in persons with different +Gz tolerance].

Hemodynamic responses to the passive and modified orthostatic tests were investigated in 27 low and 13 high +Gz susceptibility individuals. The modified orthostatic test included 5 min head-down tilt (-30 degrees) and head-up tilt (78 degrees) with occlusion cuffs (50 mm Hg and 100 mm Hg) applied to the upper third of the hip. Analysis of typological reactions in low and high +Gz susceptibility individuals revealed no significant differences in their tolerance to the above tests.

[Diagnostic value of load tests in the evaluation of nonspecific changes in the electrocardiogram].

The paper describes the examinations of 353 patients with various cardiovascular pathologies and changes in the end-portion of the ECG ventricular complex. For that purpose potassium chloride, obsidan, orthostatic and hyperventilation tests were used. The examinations demonstrated that the ECG changes were of functional nature in 178 patients, of organic nature in 155 patients and of mixed nature in 20 patients which was important for reliable diagnostic and expertise conclusions.

[Lower-body negative pressure tolerance of pilots with hypertensive-type neurocirculatory dystonia].

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.

[Method of studying acceleration tolerance of pilots in flight conditions].

The following procedure was used to study the pilot's tolerance to acceleration inflight. Experiments were carried out in a specially equipped plane with a dual monitoring system. Inflight the pilot performed 3 dives, attaining 3.

[Tolerance of +Gz accelerations in chronic compensated cardiac muscle disease].

The functional potentialities of the cardiovascular system were investigated during an exposure of people with compensated chronic diseases of the cardiac muscle to acceleration (+Gz). The test subjects were exposed to acceleration of 3 and 5 g for 30 sec with an interval of 5 min. The parameters of hemodynamics, ECG and visual perception were recorded.