Symptoms of prevision and prevention of blackout in freediving
Nowadays there is a revival of the new - the "old" sport which had been banned and forgotten from the thirties of the last century, due to drowning - "diving at a distance", now it’s called “freediving” - diving on the distance and depth of diving. The recognition and rapid development of freediving abroad and in Russia, the formation of the public and commercial organizations, preparing athletes for the sport events, the integration of people with deviations in health status into this process creates the actual vitally situation, with a lot of problems in social and functional provision. First of all, the scientific study of the symptoms of prevention of especially dangerous critical situation - loss of consciousness (blackout). This article is the start for the stimulation of the research and discussion of the sport of freediving in Russia, which will certainly prevent accidents from drowning.