INFLUENCE OF STRENGTH EXERCISES ON KINESTHETIC SENSITIVITY INDICATORS WHEN MANAGING THE BODY IN A VERTICAL POSITION BY HIGHLY QUALIFIED SKI JUMPERS

The purpose of the research: to compare the effectiveness of two methods of strength training for highly qualified ski jumpers according to the criterion of the impact of exercises performed in conditions of a stable and unstable force field on indicators of athletes’ kinesthetic sensitivity when controlling the body in a vertical position.

Methods and organization of the research. The content of the two-year pedagogical experiment provided for a comparison of two methods of strength training of highly qualified ski jumpers during the preparatory period: 1st group (10 people) performed strength exercises only in conditions of a stable force field; 2nd group (6 people) used both «traditional» strength exercises (70%) and exercises performed under unstable force field conditions (30%). The stabilometry method (test procedure «Step deviation test») was used to assess the impact of the techniques on the accuracy of athletes' perception of power, temporal and spatial parameters of body movement in a vertical position. Hypotheses about the reliability of statistical differences between and within groups were tested on bootstrap-generated samples using the calculation of the Mann-Whitney-Wilcoxon criterion (MWW/MWU) for a 5% significance level.

Research results and their discussion. Strength exercises performed under conditions of a stable and unstable force field have different effects on the parameters of kinesthetic sensitivity when controlling vertical posture in highly qualified ski jumpers.

Conclusion. The ability of ski jumpers to effectively control their working posture is not determined solely by the instability of the force field in the strength exercises they use – the parameters of controlling movement of the whole body in the vertical position are also selectively influenced by the amount of external resistance and the speed of overcoming it in strength exercises.

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