[The dynamic circulatory reaction of pilots to the standard test].

The examination of cardiovascular system in pilots in the process of their training has shown that the Valsalva test can execute the function of a slight or strong irritant with further changes in hemodynamics, particularly in the frequency of systoles and arterial pressure. These changes are accompanied by the shifts of cardiac volume per minute from hypo to hyper reaction. A correlation was disclosed between the reaction in the frequency of systoles and cardiac volume per minute which can be studied from the point of view of adaptation of blood circulation system to the factors of physical loads.

[Method for predicting danger induced by longitudinal accelerations in the 'head-pelvis' direction].

The paper deals with the results of the studies aimed to validate the criterion of prediction of human tolerance to longitudinal tailward accelerations on the basis of structural changes in cardiac rhythm recorded directly during exposure. The experiments have been done on centrifuge with recording the sequences of cardiac intervals at rest and each stage of exposure with successively increasing intensity. Representation of basic information as two-dimensional distributions of cardiointerval durations based on the autocorrelation rhythmography method has been used.

[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.