The effect of vibration, inclination, and the interaction of vibration and inclination on gait variabilities.

(A) Stride time variability; (B) Stride length variability; (C) Step width variability. Down8, Declination of 8 degrees; Down15, Declination of 15 degrees; Level, level surface; Up8, Inclination of 8 degrees; Up15, Inclination of 15 degrees; Sub, with sub-threshold plantar vibration; Supra, with supra-threshold plantar vibration; No, without plantar vibration; NS, not significant.