Spatial variables in 15 different walking conditions.
(A) Stride length in 15 different walking conditions. (B) Step width in 15 different walking conditions. From left to right, the walking conditions are uphill 15%_sub-threshold, uphill 15%_no, uphill 15%_supra-threshold, uphill 8%_sub-threshold, uphill 8%_no, uphill 8%_supra-threshold, level_sub-threshold, level_no, level_supra-threshold, downhill 8%_sub-threshold, downhill 8%_no, downhill 8%_supra-threshold, downhill 8%_sub-threshold, downhill 8%_no, downhill 8%_supra-threshold, respectively. Error bars indicate between-participant standard deviations. X indicates the mean of stride time. Black dots indicate the outlier. The symbols *, #, @, and & indicate the significant difference among inclines, and % and $ indicate the significant difference among vibration conditions.A significant effect of vibration was found in stride time (F