Functional ankle instability (FAI) is a common condition following ankle injury characterised by increased risk of injury. Ankle sprains are a common acute form of injury suffered in dancing and loss of balance can affect not only risk of injury risk but also performance aesthetics. Whole body vibration training (WBVT) is a new rehabilitation method that has been linked with improving balance and muscle function. 38 female dancers with self reported unilateral FAI were randomly assigned in 2 groups: WBVT and control. Absolute centre of mass (COM) distribution during single leg stance, SEBT normalised research distances and peroneus longus mean power frequency (f-med) where measured pre and post 6-week intervention. There was a significant improvement in COM distribution over the 6 weeks from 1.05 +/- 0.57 to 0.33 +/- 0.42 cm2 (p < 0.05), and 4 of the 8 planes of direction in the SEBT Ant, Antlat, Med and Antmed from 77.5 +/- 7.1 to 84.1 +/- 5.8% (p < 0.05) compared to control groups during the course of the 6 week training intervention. There was no evidence of improvement in peroneus longus (f-med) over time (p = 0.915) in either group. WBVT improved static balance and SEBT scores amongst dancers exhibiting ankle instability but did not affect peroneus longus muscle fatigue.

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