Ways to Improve Vertical Jumps Using Vert Device

Abstract

The volleyball game involves multiple vertical jumps needed for performing technical procedures -the attack, block or serve. All of these require explosive strength in the lower limbs. The aim of the study was to identify the influence of plyometric exercises included in the technical structures specific to the volleyball game. Thus, a group of 12 volleyball players (male, aged 17 ± 1.5 years) participated for 6 months in a training program that included plyometric exercises performed 3 times per week during the precompetitive period. In order to determine the progress of the jump, two specific tests (the attack and block jumps) and the Vert device were used. The Vert device is an accelerometer found at the Human Motricity Research Centre of the Faculty of Physical Education and Sport in Craiova, and designed in the USA. The subjects were tested before and after applying the work program. Following the application of the work program, significant progress has been identified in terms of attack and block jumps, but also in the vertical jump measured by Vert device, the mean difference being statistically significant at a threshold of p <0.05. The Vert instrument has become extremely important in the sports training economy and is also a motivational factor, the individual progress being monitored in real time.