Precision in movements of 12-13 year old volleyball players in spatial, time and dynamic parameters.

Purpose: To determine the level of precision in movements on time-space and spatial-dynamic parameters of 12-13 year old volleyball players. Material and methods of the research: analysis of scientific and methodical literature; pedagogical testing; methods of mathematical statistics. 12 young volleyball players at the age of 12-13 years, who train in Odessa SCYSSOR, experience of volleyball classes of which 2–3 years, participated in the research. The dominant hand was right at all sportswomen. Tests were carried out before training and at the end of training of average intensity. Results. It is established that accuracy of differentiation of spatial, time and dynamic parameters of movements is not identical at reproduction of movements by the dominant and not dominant hands. Accuracy of differentiation of muscular effort by the dominant hand is higher when performing movements without control of sight and is lower with visual control. Motive asymmetry was unequally shown in various conditions – at reproduction of movements under control of sight and without visual control. It is defined that training load influences it. Accuracy of reproduction of amplitude of movements by the dominant hand was higher at reproduction of the movement with visual control and, on the contrary, was lower without visual control both before training, and after its termination. Deterioration in accuracy of reproduction of amplitude of movements in various conditions took place under the influence of physical load of training of average intensity. However, improvement of accuracy of space differentiation by not dominant hand without visual control was reliable (р