• Bohdan Vinogradskiy
Keywords: Improvement, algorithm, archery, micro-movement, sensation


Introduction: Time is one of the main criteria for the correction of actions. One meets a certain hindrance when trying to determine this time, because the duration of this phase, as part of a complete shot, lies in a range of several tenths of a second. The aim of the work is to develop methodical means and methods which would create high efficiency for an archer's micro-movements during a bow string's release. Methods: Pedagogical experiment with utilization of specialized micro-movement time-study in the phase of a string's release is the method of investigation. The method is based on the basic principle that there is a close correlative relationship between sport results and the stability of time parameters of a bow string's release in archery (r = 0.79-0.94). We managed to exactly determine the real time of a string's release using a ‘device for the measurement of movements' time parameters of archers’ which we have developed (Ukrainian patent N93030186). But man has no innate sensation of a hundredth of a second delimitation. Such capability could be achieved using a special sensoric method, based upon general principles developed by Hellershtain [1], but with important innovations, namely: 1. Necessity is a numerical expression of time sensations and plays a considerable role in their development. 2. A perspective on the discovery of new and more precise signs of time's micro-intervals exists only in the presence of a close connection between subjective indices and objective criteria of time evaluation. Adding corrections to one’s actions, as well as to judgments about them, is also possible only under such conditions. 3. Time's micro-interval sensation during a string's release must not be separated from the archer's activities. Sportsmen's reactions would be omni-percipiently analyzed through the following algorithm: clicker's sound signal - reaction - subjective trace - objective device's result - memory of the previous shot sensation - comparison of sensations and objective data. We should ‘capture’ those present, elementary time sensations, which remain after release completion, on the basis of the mentioned principles. Then we should transform them into a conscious category. That will cause an effect under which actions, which are time-sensitively regulated, will be more perfect. Results: We organized two groups of archers of medium levels of qualification (experimental and control) to check the efficiency of the proposed method. It should be supposed that we have positive effect when we survey a clear tendency to the stabilization of a string's release time parameters and an improvement in sport results as a result of the latter. Indices of Student's t-criteria for linked excerptions become a mathematical form of informative positive or negative displacements as well as changes in results of shooting before and after the pedagogical experiment. An index of bilateral Student's t-criteria equal to 2.262 was assumed to be of critical level for a=0.05 and u=34. Conclusions: 1. A sensory method's introduction secured a perceptible increase in the stability of release time parameters and an improvement in sport results. 2. By contrast, we do not see such changes in a control group of sportsmen. 3. Improvement of differential ability of specialized micro-intervals' time characteristics is a basis for the stabilization of a string's release duration. References: Ãåëåðø òåéí Ñ.Ã. ×óâñòâî âðåì åí è è ñêî ðî ñòü äâèãàòåëüí î é ðåàêöèè.148p,, 1958.