BIOMECHANICAL ANALYSIS OF TWO DIFFERENT JUMPS IN RHYTHMIC SPORTS GYMNASTIC(RSG)

  • F. Sousa
  • E. Lebre

Abstract

INTRODUCTION - The aim of this study Table was to analyse the different techniques used by RSG gymnasts to perform two jumps: the leap jump, and the leap jump with trunk extension (figure 1 -A and B). Twelve high level RSG gymnasts aged 15k3.2 yrs. 49.424.7Kg weight and 167.2+.6.8cm height were observed. Each gymnast performed the two different jumps.The parameters observed were: velocity of Center of Mass (CM) on take off and landing; duration, high and length of the jumps, and the high of the CM in differents moments of the jump (take off, highest point and landing). The jumps were filmed and analysed using the Peak5 - Motion Measurents System with a 16 points spacial model. RESULTS- The main results are resumed in table 1. CONCLUSIONS-Observing the results we could conclude :hat, nevertheless the A jump was an easy one, the gymnasts performed B jump with a high technical quality, since the jump is better it is performed the highest, longest and during more time The results showed also that probably gymnasts did not performed A jump the best way that could. This is an important remark to the coaches because many times gymnasts do not put the same emphasis in easy skills, and the penalties in the completion are the same for easy and for very difficult skills