A comparison of two methods of whole body vibration and plyometric training on jumping in young male volleyball players

In recent decades, various methods have been used to improve power and explosive strength of lower extremities in volleyball players which results in higher jumping. The purpose of this study was to investigate whole body vibration and plyometric training effects on vertical height jumping in young male volleyball players. Twenty young volleyball players of Peikan club in Tehran were selected and randomly divided into two equal groups: vibration group (going through a four-weekprogram) and plyometric group (experiencing an eight-week program). Sarjent test was used to evaluate the jumping rate of the players. To determine internal differences existing betweenand within the groups, the data were analyzed through paired and independent t tests, respectively. Data analysis indicated that conducting eight weeks plyometric and four weeks vibration trainings increases jumping rate in young volleyball players significantly (P<0.0001). Also, t test results revealed that there were no significant differences in mean jumping rate between two groups (P>0.05).Discussion and Based on our results, it seems that, in comparison to other training procedures, whole body vibration training, as a new training approach, can enhance power and explosive strength of lower extremities and improve jumping rate in volleyball players in a short period.