A.V. Sidorenko

The current development of information technologies enables one to solve the problems associated with a complex stage of bioelectric signal registration and analysis. Using of the delayed coordinate method allows for objective analysis of bioelectric signals reflecting the processes associated with functioning of systems in a human organism. Such an analysis is realized with the help of a special information-measuring complex. This paper presents analysis of the changes in bioelectric signals influenced by the graduated physical loads, combined physical load and caffeine, combined physical load and L-carnitine taking as an example the processing and analysis of interference surface electromyograms by the delayed coordinate method. The obtained quantitative estimates in the form of information parameters including the correlation dimension and Kolmogorov entropy make it possible to reveal variations in functioning of human organism and its systems influenced by the external factors. It is demonstrated that the combined effects of caffeine and graduated physical load lead to the increased stability of a dynamic system reconstructed on the basis of electromyograms. At the same time, combination of physical load and L-carnitine cause instability of a dynamic system over the variation range of graduated physical loads given in this paper. The obtained parameters of nonlinear dynamics correlate well with the spectral characteristics of the electromyograms under study.