Invariant Characteristics of Functioning of the Human Cardiovascular System within the Circadian Rhythm with Free Activity and Stress Tests (pp. 177-179)
Authors: A. S. Borodin, D. V. Sorokin, and D. A. Tuzhilkin
Abstract: The idea of coherent temporal coordination of the physiological functions of the human body, defined by F. Halberg (1969) as a principle characterizing the stability of its integral functioning, as well as other living organisms, has led to a fundamentally new approach to the analysis of both the behavioral and physiological manifestations of a particular organism. Relative to one of the main integrating functional systems of the human body – the cardiovascular system, the main components are conceptually defined [1, 2]. Currently, attempts are being made to constructively describe the dynamics of the invariant characteristics of its functioning from the point of view of chronomedicine problems , with various aspects of sports chronobiology .
In this study, we aim to generalize the analytical description of the almost periodic components of circadian low-frequency, transitional, and other components of the variations in heartbeat periods from beat to beat in the estimates of the first two main moments of their distributions (average values, their standard deviations), as well as the spectral composition of non-deterministic periodic components of the heart rhythm, under the conditions of a typical daily activity of volunteers and during exercise tests [5, 6].
Open Access item.
Click below PDF icon for free download.
This is an Open Access item. Click above PDF icon for free download.