title: [Prediction and analysis of pulse frequency in cosmonauts by the method of extrapolation modelling in the class of differential equations].
abstract: The paper discusses the use of the methods of the theory of automatic control and identification for predicting and analyzing the cardiovascular function of crewmembers in long-duration space missions. On the basis of the inflight heart rate data models characterizing the cardiovascular function can be built. The models have the form of linear differential equations of the second order and are used to calculate values of the heart rate. With respect to the parameters of the equations, the characteristics of the quality and specificity of the cardiovascular regulation inflight are determined. The paper describes the practical application of the above methods to predict and analyze the cardiovascular function of the crewmembers of the Soviet Salyut-1 and Salyut-4 and US Skylab-3 space stations.
mesh_terms: D002320:Cardiovascular Physiological Phenomena; D006801:Humans; D008433:Mathematics; D008954:Models, Biological; D011379:Prognosis; D011674:Pulse; D013026:Space Flight; D013997:Time Factors; D014586:USSR; D014481:United States
vernacular_title: Prignozirovanie i analiz chastoty pul'sa kosmonavtov metodom ékstrapoliatsionnogo modelirovaniia v klasse differentsial'nykh uraveniĭ