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EFFECT OF WHOLE BODY VIBRATION TRAINING ON LOWER LIMB PERFORMANCE IN SELECTED HIGH-LEVEL BALLET STUDENTS.

ANNINO, GIUSEPPE; PADUA, ELVIRA; CASTAGNA, CARLO; DI SALVO, VALTER; MINICHELLA, STEFANO; TSARPELA, OLGA; MANZI, VINCENZO; D'OTTAVIO, STEFANO
Journal of Strength & Conditioning Research: November 2007
ORIGINAL RESEARCH: PDF Only

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) post- training 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.

(C) 2007 National Strength and Conditioning Association