ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

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Anishchenko T. G., Igosheva N. B., Khokhiova O. N. Normalized entropy in the evaluation of sex particularities in cardiovascular responses to stress influences. Izvestiya VUZ. Applied Nonlinear Dynamics, 1997, vol. 5, iss. 1, pp. 81-92. DOI: 10.18500/0869-6632-1997-5-1-81-92

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Language: 
Russian
Heading: 
Applied Problems of Nonlinear Oscillation and Wave Theory
Article type: 
Article
UDC: 
577.3+517
DOI: 
10.18500/0869-6632-1997-5-1-81-92

Normalized entropy in the evaluation of sex particularities in cardiovascular responses to stress influences

Autors: 
Anishchenko Tatyana Grigorievna, Saratov State University
Igosheva Natalia Borisovna, Cambridge Clinical Trials Unit
Khokhiova Oksana Nikolaevna, Saratov State University
Abstract: 

The sex particularities in cardiovascular responses to different stress stimuli in humans and rats were investigated using the physiological parameters, heart rate and blood pressure, and a new sensitive criterion of electrical heart and blood pressure variability, a normalized entropy. The result showed that cardiovascular reactivity depended on the type of stress and the sex of individual involved. The values of normalized entropy increased or decreased during and after stress. The changes in electrical heart and blood pressure variability were more pronounced and more prolonged when one compared with those in heart rate and blood pressure. Normalized entropy was demonstrated to be more sensitive criterion of sex and individual differences in cardiovascular responses is stressors than heart rate and blood pressure. So, resulis illustrate а perspective of new parameter using as а characteristic of electrical heart and blood pressure variability in male and female organism under stress conditions.

Key words: 
-
Acknowledgments: 
The authors express deep gratitude to Professor V.S. Anishchenko. for assistance in discussing the results obtained. The research was funded by a grant in the field of fundamental natural science (code N 95-0-10.0-238).
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Received: 
17.03.1997
Accepted: 
18.04.1997
Published: 
18.05.1997
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