The purpose was to examine the effects on strength and power of progressive-overload, whole body vibration (WBV) training as part of a 15-week periodized, strength training (ST) program. Eighteen collegiate women athletes with >= 1 year of ST and no prior WBV training participated in the crossover design. Random assignment to one of two groups followed pre-tests of seated medicine ball throw (SMBT), single leg hop for distance (LSLH, RSLH), countermovement jump (CMJ), 3-RM front squat (FS), pull-up (PU), and 3-RM bench press (BP). WBV was two 3-wk phases of dynamic and static-hold bodyweight exercises administered 2 days/wk in ST sessions throughout the 15-wk off-season program. Total WBV exposure was 6 min broken into 30-sec bouts with 60-sec rest (1:2 work relief ratio). Exercises, frequency and amplitude progressed in intensity from the first 3-wk WBV training to the second 3-wk phase. Repeated measures ANOVAs were used to analyze the SMBT, CMJ, LSLH, RSLH, FS, PU, and BP tests. Alpha level was p<0.05. FS, LSLH, and RSLH increased (p=0.001) from pre- to post- test. FS increased from mid- to post- test. PU increased (p=0.008) from pre- to post- test. SMBT and BP showed a trend of increased performance from pre- to post test (p=0.11). Two 3-week phases of periodized, progressive-overload WBV+ST training elicited gains in strength and power during a 15-wk off-season program. Greatest improvements in performance tests occurred in the initial WBV phase. Implementing WBV in conjunction with ST appears to be more effective in the early phases of training.
Copyright (C) 2014 by the National Strength & Conditioning Association.