Fig. 2

Median Split-belt (SB) gait asymmetry (GA) throughout four split-belt conditions (BSD, WSI, WSD and BSI, depicted colours, see key). A Initial effect. GA changes between baseline (BL) and early adaptation (EA) were significantly affected regardless of SB condition. The mean values (± SEM) of the percentile change in GA, from BL, were 34.0 ± 21.2% and 11.3 ± 8.5%, when decreasing and increasing belt speed, respectively (nonparametric testing: p = 0.0078; lumping both 'decrease' trials for comparison with both 'increase' trials). B Adaptation. GA changes between early adaption (EA) and late adaptation (LA) in three out of four conditions (all except WSI) were found significant. C Post-adaptation. GA changes between late adaptation (LA) and early post-adaptation (EPA) showed a reversal effect. D Therapeutic effect. GA in baseline (BL) and early post-adaptation (EPA). BSD/WSI matching conditions showed a significant change in GA from BL to EPA. BSD – Best side decrease, WSI – worst side increase, WSD – Worst side decrease, BSI – best side increase, NS – non-significant