However, the aforementioned studies have only used synchronous vibration (SV) (50 Hz maximum) machines to assess sprint performance, where both legs are vibrated as the platform moves predominately in the vertical direction at a fixed peak-to-peak displacement (1- 4 mm). Another commercially manufactured vibration platform, which has a teeterboard produces side-alternating vertical sinusoidal vibration (SAV) (30 Hz maximum) to the body