Everything you need to look and feel your very best! 24-Hour Access, 1-on-1 Personal Training, Home Fitness Equipment & Supplement Sales. www.jasonsfitness.com Jason’s Fitness 3724 Cottage Hill Rd. Mobile, Alabama  (251) 661-4615         Jason’s Fitness 120 W. Berry Ave. Foley, Al  36535  (251) 943-5591 J Strength Cond Res. 2007 Nov;21(4):1072-6.  Effect of whole body vibration training on lower limb performance  in selected high-level ballet students.  Annino G, Padua E, Castagna C, Di Salvo V, Minichella S, Tsarpela O, Manzi V, D'Ottavio S. School of Sport and Exercise Sciences, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy. g_annino@hotmail.com  The aim of this study was to examine the effects of 8 weeks of whole body vibration (WBV)  training on vertical jump ability (CMJ) and knee-extensor performance at selected external loads  (50, 70, and 100 kg; leg-press exercise) in elite ballerinas. Twenty-two (age, 21.25 +/- 1.5 years)  full-time ballerinas were assigned randomly to the experimental (E, n = 11) and control (C, n = 11)  groups. The experimental group was submitted to WBV training 3 times per week before ballet  practice. During the training period, the E and C groups undertook the same amount of ballet  practice. Posttraining CMJ performance significantly increased in E group (6.3 +/- 3.8%, p <  0.001). Furthermore, E group showed significant (p < 0.05-0.001) posttraining average leg-press  power and velocity improvements at all the external loads considered. Consequently, the force-  velocity and power-velocity relationship shifted to the right after WBV training in the E group.   The results of the present study show that WBV training is an effective short-term  training methodology for inducing improvements in knee-extensor explosiveness in  elite ballerinas.