Mathematical model of the multifractal dynamics and analysis of heart rates

Based on test data, the self-similar character of the instantaneous heart rate is shown. Within the multifractal dynamics model, equations describing the piecewise-linear trend of the instantaneous heart rate are obtained. Using these equations, a classification of the types of its dynamics is proposed as relating to the value of the fractal D dimensionality of the heart rate curve. In the field of the D values near the D bifurcation points, there are bifurcation effects, of which the instant heart rate speed jumps of the piecewise linear trend are typical.