Geomagnetic activity effects on the functional characteristics of the human organism

A complicated nonlinear biological system should be in principal more sensi tive to the external factors activity including geomagnetic disturbances. T he complex of experimantal studies based on this hypothesis were done simul taneously in two hospitals in Moscow as well as in condition of space orbit ;al station, where just abovementioned conditions are the case. This studie s revealed that the reaction of astronautes to the geomagnetic storm involv es a mobilization and activation of all centers of the sympathetic link, an d as a result, - a significant increase and stabilization of pulse (heart r ate), decrease of the heart rhythm variability and the power of respiratory waves. This nonspecific adaptation stress-reaction was accompanied by vari ations in the regulation of vascular tonus which is correspond to specific adaptation stress-reaction. The results of clinical examinations of healthy people and patients with the ischemic heart; disease lead us to the conclu sion that the reaction to the geomagnetic disturbances are mainly of one ty pe and manifests themselves in deterioration of the physiological status, r heologic blood characteristics and the heart rate disturbances similar to o nes observed in astronautes.