Scholarly record

CORRELATIVE ANALYSIS OF THE KINEMATIC AND DYNAMIC CHARACTERISTICS OF SPORTS TECHNIQUE USED IN ACROBATIC ELEMENTS AND PERFORMANCES ACHIEVED BY JUNIOR GYMNASTS IN BALANCE BEAM EVENTS

Vladimir Potop, Olivia Carmen Timnea, Marius Stanescu

Abstract

The aim of this paper is to highlight the degree of connection between the kinematic and dynamic characteristics of sports technique used in acrobatic elements and the performances achieved by junior gymnasts in balance beam events. For this purpose we used the following research methods: bibliographic study of the specialized literature, pedagogical observation, video-computerized method, using пїЅPinnacle StudioпїЅ and пїЅPhysics ToolKitпїЅ programs, method of movement postural orientation and evaluation of sports technique key elements with complex coordination of movement structure, method of movement postural orientation, statistical-mathematical and graphical representation methods. Within the structure of the acrobatic elements on beam there were shown and analyzed the postures of movement orientation: in preparatory phase пїЅ the launching posture, in basic phase пїЅ multiplication of body posture and in final phase пїЅ concluding posture (final position) which can be also considered a launching posture for the next element. The execution of acrobatic elements by junior gymnasts aged 12 to 15, presented in different ways: separately, connected and mixed, was analyzed using the specialized program Physics ToolKit in order to point out the kinematic and dynamic characteristics of sports technique key components in acrobatic elements on balance beam. The parameters of the biomechanical analysis of acrobatic elements on balance beam highlight gymnastsпїЅ average height, body mass, analysis of the acrobatic elements executed separately, in connection of 2-3 acrobatic elements and in mixed series (artistic - acrobatic), mean of rotational inertia, mean of movement radius of segments: front leg toes (for pushing), back leg toes (for balance), shoulders and arms. The study results prove that the comparative correlation analysis of the biomechanical characteristics and the performances achieved in competition by junior gymnasts, analysis made by parametric and nonparametric statistic methods, reveal different degrees of connection of the studied indicators and their relationship in conformity with the kinematic and dynamic particularities of sports technique used in acrobatic elements in balance beam events.

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