The effect of 6 weeks of plyometric on balance and rang of motion in elite men alpine ski

Poster Presentation
Paper ID : 1525-12THCONG
Oral / Poster Presentation File: 1688-12THCONG.jpg 
1Faculty of Sport Sciences, Azad University, Tehran Branch, Central Tehran Iran
2Physical Education, Karaj Azad University of Sport Sciences, Iran
3Karaj Azad University of Sport Sciences
Biomechanic experts can have important role in optimizing of exercise on athletes in various sport like ski. Plyometric has positive influence on power,speed and agility, but there is not any information about the effect of plyometric on the biomechanic parameters such as balance and rang of motion so, the aim of this study is, to study the effect of 6 weeks of plyometric on balance and rang of motion in elite men alpine ski.
Fifteen men that are remember of national alpine ski team who were four years in the national team took part to this study. Before and after plyometric training students do the tests related to balance (SEBT and STORK) and stability(rang of extention of knee joint). Students did the plyometric exercises for 6 weeks, that included kinds jumping such as horizontal, vertical, skipping and...They included 10 times repeat for 5 set. In each session intensity with increasing repetitions and sets were added with due attention to student's situation. After do training, measured post_test(measured factors again). T statistical metod were used for analysed the variance (p<0/05).
The result test for SEBT in 7 diractions had significant increase in post_test, and only in one direct (anterior_ interior) showed no significant increase. There are significant increase in the amount of static balance and found no significant increase in the rang of extention of knee joint in students. Entirely, we can tell that plyometric exercise could increase the dynomic and static balance, but did not effective on increasing the rang of motion in alpine skier man and this exercise could not help students to increase rang of extention of knee joint.