Fig. 2

The parameters of gait asymmetry at tDCS condition and sham-tDCS condition among three obstacle crossing height. “*” indicates significant interaction effects; “†” indicates significant main effects between tDCS and sham-tDCS; “‡” indicates significant height main effects among different leg’s length; “§” indicates significant differences between tDCS and sham-tDCS treatment at each height. (L: Left/R: Right: left and right limb, respectively, as leading limb during obstacle crossing; 30, 20, 10LL: 30%, 20% and 10% leg’s length obstacles height; SW: swing time, ST: stance time, SW/ST: swing/stance time, DS: double support time, GA: gait asymmetry)