Figure 5. Dynamic-balance contribution of the ankle (DBC_Ank) vs. weight bearing of PD patients, shown separately for non-freezers (left panel) and freezers (right panel).

The healthy one-to-one relationship (DBC = DBW) is indicated by the grey dashed line in both panels. The linear regression line between weight bearing and balance control for the non-freezers is indicated by dotted line. There was a significant difference between regression lines of freezers and non-freezers (p = 0.01). Freezers showed a non-significant relationship between weight bearing and balance control (R² = 0.28, p = 0.15), whereas non-freezers showed a significant relationship (R² = 0.48, p = 0.02). The * indicates a significant difference between the regression lines of the non-freezers and freezers.