Fig. 2. Comparison of ΔO2 cost between experimental and control groups. (A) Difference from post-treatment to pre- treatment states (Δ) in the O2 cost (mL/kg·m) after treadmill training had no significant differences in the parameter during treadmill walking between experimental and control groups. (B) However, the experimental group showed significantly lower ΔO2 cost, as compared with the control group during overground walking (*p