Effects of Two Warm up Protocol on Vertical Jump Performance in Mini-volleyball Players

Warm-up exercises are necessary before performing of explosive movement in any sporting event especially to improve performance as well as injury prevention in forceful jumping. The aim of this study was to compare effects of routine static stretch and newly dynamic movement as warm up protocols on jumping performance. Fifty seven male mini volleyball players (10.84±1.24yrs) participated in warm up exercise protocol in 2 consecutive weeks, three sessions for static stretch warm up and three other sessions for dynamic warm up every other nonconsecutive day. Static stretch consists of seven movements hold 12 seconds; relaxing 8 seconds and 12 seconds for each lower limb. Dynamic warm up includes 12 movements lasting 8 minutes. After each movement vertical jump test was performed, while Paired t test used to determine differences between two applied warm up exercise protocols. Significant increase has shown in vertical jump following dynamic warm up comparing to static stretch (p<0.05). Due to results, performing dynamic movement may be more effective to prior to perform high power and explosive skills such as jumping.