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Ross Fiziol Zh Im I M Sechenova. 2004 Jan;90(1):20-31.

[Characteristics of the human cardiovascular system in the human diving response].

[Article in Russian]

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St. Petersburg State University, 199034, St. Petersburg, University Emb., 7/9, Russia.


Comparative-evolutional research of diving response showed that mechanisms of its expression had much in common in humans and in animals. Firstly, it involves a reflex bradycardia, vasoconstriction of peripheral vessels, and blood flow centralization. But, unlike animals whose diving response has some typical species peculiarities, human diving response is rather diverse. Four types of cardiovascular system response to face submersion were revealed: over-reactive, reactive, paradoxical, and nonreactive. These types were chosen according to the bradycardia character. It is also supposed that the occurrence of individual maximal R--R-interval, while serving as a signal to apnea stopping, is among the reasons of apnea activity limitation.

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