Title

Optimal frequency, displacement, duration, and recovery following acute whole body vibration training for strength and power output

Date of Award

2007

Availability

Article

Degree Name

Doctor of Philosophy (Ph.D.)

Department

Exercise and Sport Sciences

First Committee Member

Joseph Signorile, Committee Chair

Abstract

Background. Power is an important component of general health, fitness, and athletic performance. Traditional overload techniques require considerable time, intensity and volume of training. Whole Body Vibration (WBV) is a potentially less time-consuming method for increasing power performance than traditional training. However, the exact protocols that can maximize power output have not yet been identified. Methods . Eleven healthy males, aged 32.3 +/- 4.1y and 9 healthy females, aged 29.1 +/- 3.5y performed counter movement jumps (CMJs) of maximal volition to assess peak power pre- and post (immediately, 1min, 5min, and 10min) randomized WBV stimuli set at different frequency (30, 35, 40, and 50Hz), displacement (2-4mm vs. 4-6mm) and duration (30, 45, and 60s) combinations. Results. Repeated measures ANOVA on peak power normalized to initial power (nPP) revealed no significant effects due to duration of stimulus. However, high frequencies were more effective when combined with high displacements and low frequencies more effective in conjunction with low displacements (p<.05). Additionally, the greatest improvements in nPP occurred at one minute post-treatment with significant improvements lasting through five minutes post-treatment (p<.05). Conclusions. Optimal acute effects can be attained using as little as 30s of WBV and are highest from one to five minutes post treatment. Additionally, high frequencies were most effective when applied in conjunction with high displacements while low frequencies were most effective when applied in conjunction with low displacements.

Keywords

Health Sciences, Recreation

Link to Full Text

http://access.library.miami.edu/login?url=http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3267683