Parameters Higher speed of response Low speed of response Median lower quartile upper quartile Median lower quartile upper quartile Determinism. % 98.820 97.920 99.04 98.98 97.28 99.46 Shannon Entropy- secret unit 3.124 2.918 3.31 3.29 2.87 3.46 Approximate entropy 1.13 0.981 1.15 1.00* 0.87 1.10 Sample entropy-secret unit 1.504 1.44 1.64 1.53 1.19 1.66 *- p<0.01 for concerning of athletes with higher average speed of response

Table 5: Evaluation of information-entropy characteristics of heart rate variability in athletes with different levels of sensory-motor response.