Chaotic dynamics of movements stochastic instability and the hypothesis of N.A. Bernstein about "repetition without repetition"
  The registration of tremor was performed in two groups of subjects (15 people
in each group) with different physical fitness at rest and at a static loads of
3N. Each subject has been tested 15 series (number of series N=15) in both
states (with and without physical loads) and each series contained 15 samples
(n=15) of tremorogramm measurements (500 elements in each sample, registered
coordinates x1(t) of the finger position relative to eddy current sensor) of
the finger. Using non-parametric Wilcoxon test of each series of experiment a
pairwise comparison was made forming 15 tables in which the results of
calculation of pairwise comparison was presented as a matrix (15x15) for
tremorogramms are presented. The average number of hits random pairs of samples
(<k>) and standard deviation {\sigma} were calculated for all 15 matrices
without load and under the impact of physical load (3N), which showed an
increase almost in twice in the number k of pairs of matching samples of
tremorogramms at conditions of a static load. For all these samples it was
calculated special quasi-attractor (this square was presented the distinguishes
between physical load and without it. All samples present the stochastic
unstable state.
