Figure 2

Gait parameters under different conditions in controls and subjects with Parkinson's Disease. Comparison of gait velocity, stride length and cadence between the baseline condition (BL), the condition involving optic flow (BOF, FOF) and the condition involving the attentional strategy (AS). The statistical analysis has been performed for each group (controls and PD) separately. Statistically significant differences (p < 0.05) and marginally significant differences (p < 0.10) between conditions are evidenced by, respectively, solid and dotted horizontal lines. # means a significant difference (p < 0.05) of a given parameter between controls and PD group in the baseline condition.