Fractal analysis of variability of heart rhythm among female biathletes with a different training level

The article examines the parameters of the nervous and hormonal regulation of the heart rhythm. Fractal analysis of variability of heart rhythm among female biathletes has been conducted during the study. The quantitative and qualitative study and the comparison of dynamic series of cardiointervals among female athletes in order to determine function efficiency of fractal components in the circulatory system have been made. The components which characterize the heart function, neural-vegetative component, the condition of the hypothalamic-pituitary system and the central nervous system have been referred to the indicators of the fractal analysis of heart rhythm. The study of the total effect of regulation indicators: self-regulation of the heart, autonomic homeostasis of heart rhythm, stability of regulation of heart rhythm, regulation level of nervous and endocrine components of hypothalamic- pituitary system («fast» and «slow» adaptation to the load) has been implemented...