biomech project

biomech project - the dominant shoulder (internal rotators)...

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Volleyball Spike Velocity Volleyball spike velocity is a complex skill that requires many components of the body. Forthomme et al. (2005) summarized this skill requiring movement, technical, and muscular quantities. To achieve success in volleyball one would need to spike the ball at the highest possible speed. Volleyball spike velocity was tested among 19 male volleyball players that were in national divisions in high level practice situations. A radar gun was set at the opposite corner of the court to get the exact velocity of the ball. Many factors correlate will the balls velocity. Because the spike first starts out with a short distance run then a vertical jump the spiker will convert horizontal momentum into vertical momentum. Volleyball spike velocity is also affected by different body segments. Forthomme et al. (2005) found that spike velocity correlates considerably with strength performance of
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Unformatted text preview: the dominant shoulder (internal rotators) and of the dominant elbow (flexors and extensors) concentrically. Bartlett et al. (2005) observed that peak torque of the internal rotators in all concentric conditions showed a reasonable relationship with ball velocity performance. This finding shows that improvement of the internal rotators strength would increase ball velocity during the spike. Cohen et al. (2005) pointed out that external rotators do not contribute to high spike velocity but need to be in balance with the internal rotators. Forthomme et al. (2005) conducted a study finding a significant relationship ball velocity and specific muscle group strength training. To increase ball velocity one would focus on strength training of the dominant should while keeping the internal and external rotators in balance. Forthomme, B et al. (2005). Am J Sports Med, 1514-1518...
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