THE IMPACT OF PHYSICAL EXERCISES IN INCREASING THE EXPLOSIVE POWER ON VOLLEYBALL PLAYERS (AGED 16-18 YEARS)

Abstract

All types of sports, especially volleyball has high demands in increasing the explosive power, which have  an important effect in raising the vertical jump in volleyball and  in the general performance of athletes. For this reason volleyball trainers must apply some specific physical exercises in order to increase the explosive power.The aim of this study is to evaluate the impact of physical exercises in raising the explosive power of volleyball player of the Dinamo team aged 16-18 years. According to the hypothesis if physical exercises that  we have chosen, are appropriate to complete the purpose of raising the explosive power, for this reason we have done 3 tests in different period of time (January 2017) and (July 2017) in order to evaluate the improvement in explosive power after applying the selected physical exercises. The number of the subjects that participates in the research study are 20 volleyball 
players (age 16-18 years old). Three test procedures and assessment are supported by LEONARDO 
MECHANOGRAPHY which are: Multiple two leg hopping (m2HL)test, Single two leg jump  (s2LJ)test 
(without using arms), Single two leg jump (s2LJ) test (using arms).  After first period of measurements 
(January 2017) volleyball players have conducted some specific physical exercises for six months in order to increase the explosive power. At the end of the physical exercises application, which coincides with the second period of measurements, the subjects have conducted the same tests to see the difference and the effect of the selected exercises. In both periods of measurements, they have performed two times for each test and we took on consideration the best result. The results of this study shows that the selected physical exercises are appropriate to increase  the explosive power and the vertical jump of volleyball players. According to this study those selected physical exercises are good example that trainers must consider on.