Volleyball players need to be explosive. Not only do they need a quick first step and great jumping ability, but volleyball players also need to have an explosive upper body. The ability to generate power through the shoulders and core will allow hitters to be more effective. In the clip below Rob Rose, President of True Athlete Performance in Washington, DC, explains how to incorporate the core and upper body to try to gain more power on the hitters swinging movement.
He demonstrates two simple exercises: The Wood Chopper, Power Push-ups (4 variations). These drills come from a complete training DVD for volleyball. For more info on the drill that this video came from click the link Explosive Speed, Reaction and Jump Training for Volleyball
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