Nonlinear measures from the lower extremity joint angles. SampEn: Sample Entropy. LyE: largest Lyapunov exponent. LA: left ankle. RA: right ankle. LK: left knee. RK: right knee. LH: left hip. RH: right hip. Statistically significant effects in the two-way (Side: Right/Left; Harness: With/Without) repeated measures ANOVAs are reported, with pH the p-value for the harness main effect.