Experimental Analysis of the Chaotic Dynamics of Muscle Biopotentials under Various Static Loads

Arbitrary and involuntary movements were studied from the position of the new chaos-self-organization theory. Analysis of organization of tappingrams and tremorograms within the framework of N. A. Bernstein "repetition without repetitions" hypothesis leads to the Eskov-Zinchenko effect. In this case, there is no statistical stability for samples of parameters of electromyograms of any movements obtained in a row, i.e. f_j (x_i)≠f_j+1(x_i) with the probability p≥0.97. In this paper, the basic problem of motion physiology, stochastic instability establishment mechanisms, is solved in the analysis of muscle electromyogram parameters under conditions of permanent static force. Statistical instability of electromyograms within the framework of the Eskov-Zinchenko effect is proven.