PECULIARITIES OF THE INRUN POSITION TECHNIQUE IN SKI JUMPING ON A STEEP AND GENTLE SECTION OF THE INRUN MOUNTAIN OF HIGHLY SKILLED AND YOUNG SKI JUMPERS

The research purpose – comparative analysis of the angular indicators of the inrun position of the strongest ski jumpers on the steep section of the acceleration hill and the take-off table and an evaluation of the inrun technique of young ski jumpers.

Methods and organization of the research. Video recording of the inrun position in ski jumping was performed at international (elite athletes, K-125 and K-95, n=20) and All-Russian competitions (young athletes 12-17 years old, K-40 and K-65, n=60). Angular indices were calculated in the «Dartfish Pro Sute 9.0» program, statistical processing of the results was performed in «RStudio 2024.09.1 Build 394».

Results and their discussion. The angular parameters of the inrun position on a steep section of the acceleration hill and take-off table was measured in male and female high-skilled and young athletes. Statistically significant differences were determined between steep and gentle inrun position in torso angle in men (p˂0.01) and knee joint angle in women (p˂0.01). The technique of young athletes on the take-off table corresponded to the model indicators and did not differ in most parameters from the technique of the strongest ski jumpers, and on the steep section, most of the indicators of boys and girls had statistically significant differences from the values of joint angles of the leaders.

Conclusion. The strongest athletes maintain a stable aerodynamic position throughout the inrun period in the ski jump, while the young athletes show a higher position on the steep section. The results of the study can be used in the training of ski jumpers to improve technical fitness. 

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