Effectiveness of different postactivation potentiation protocols with and without whole body vibration on jumping...

This study examined the acute effects of different parallel squat postactivation potentiation protocols with and without whole body vibration on jumping performance in college athletes. Fifteen men (20.3 ± 1.3 years, 179.50 ± 5.3 cm, 81.0 ± 10.8 kg) performed 3 repetitions of a countermovement jump (CMJ) and best drop jump after 3 conditions: (a) parallel squat with 80% 1 repetition maximum without vibration (NV-PS), (b) parallel squat with 80% 1 repetition maximum on a whole body vibration platform (WBV-PS) (1.963-mm amplitude and 40 Hz), and (c) control (C). Each condition was performed under both low-volume (LV) (1 set of 3 repetitions) and high-volume (HV) (3 sets of 3 repetitions) protocols that were followed by both 1- and 4-minute rest periods. Significant improvements were observed for the CMJ height (p = 0.005) after 4 minutes of recovery and the LV protocol (p = 0.015) regardless of the condition. Additionally, for the WBV-PS condition, a significantly lower drop jump height was observed after 1 minute (p = 0.0022) after both low (p = 0.022) and HV (0.010) protocols. In conclusion, 4 minutes of recovery was adequate for improving CMJ height after an LV protocol regardless of the condition and restoring drop jump height performance after WBV-PS regardless of the protocol in male college athletes.