Purpose: The aim of this case study was to determine the differences in the performance technique of the Clear hip circle to handstand on the uneven bars (KOVT), based on the kinematic analysis of the reference points of female gymnasts who participated on the final of the 39» and 40,n World Cup in Maribor (SLO). The differences were determined based on the value of the trajectory, the angles, and angular velocities of the selected kinematic parameters. Methods: The experiment included a kinematic analysis as the basic method, with statistical analysis support. The sample included 13 female gymnasts. In total 15 successful KOVTs were performed. Data processing followed the standards of the Ariel Performance 3D Video System (Ariel Dynamics Inc., San Diego, CA) for kinematic analysis, with 16 reference points through several phases: frame grabbing, digitalization of the recorded videos and the reference points of the body, transforming the three-dimensional space, data filtering and the calculation of kinematic quantities. The Ethics Committee of the Faculty of Sport, University of Ljubljana approved all experimental procedures according to the revised Declaration of Helsinki. The criterion was the successful KOVT performance in the World Cup Finals. The sample of reference points was presented as the center of the shoulder joint and body center of gravity. Based on the sample of the reference points, the kinematic parameters of angle and angular velocity of the hip and shoulder joints were calculated, followed by statistical data processing. Results: Based on the analysis of angular graphs and the angular velocity of movement of the hip and shoulder joints, three different ways of starting the first phase and entering the second phase of movement of the KOVT were noted. The kinematic analysis indicated that there are three different styles in the technique of execution of the Clear hip circle to handstand at the World Cups: 1) The first phase is carried out with the stretched body of little significance for the flexion of the hip during the entire execution (four competitors); 2) Extended body or at the very beginning of the movement of the shoulders backwards there is a short and quick extension of the hip joint - (extension in the hip joint with peripheral support - the legs stand visibly, and the hips are lowered - six competitors); 3) Hyperextension in the hip joint (three competitors). Conclusions: These three styles of the performance do not affect the successful performance the technique. The style of a technique depends on the individual characteristics of the gymnasts.
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