Comparison of the effects of aquatic and landing plyometric exercise (training)on defence jumping and attack, agility and muscular contusion in female volley ball players

The present research was carried out to compare the effects of aquatic and landing plyometric exercise (training) on defence jumping and attack, agility and pain feeling in female volleyball players. 41 elite volleyball players from shiraz clubs participated in the research voluntarily and were divided randomly in three groups of landing exercide (12), aquatic exercise (12) and the control group (13).The control group attended in the exercise of their own volleyball team. The empirical groups were doing plyometric exercise for eight (8) weeks in addition to volleyball. Agility, defence jumping and three step jumping of attack were measured in three stages. 3×3 variance analysis was used for comparing sizes and groups, and independant T-test was used for repeated sizes and measuring level of pian feeling. The results showed that in defence jumping and attack, progress of aquatic group was higher in comparison to land group and the difference was significant (P%5). The level of muscular contusion was not significant at the end of eighth week (P%5). Also in the agility test no signigicant difference was observed (P%5). With respect to the progress of most subjects (cases) in the level of jumping height and agility in the aquatic group in comparison to land group, and also reduced injuries in them, it could be said that aquatic plyometric exercise is better than plyometric exercise on land because of adhesio and buoyancy properties of water.