Figure 2.

Swing phase gluteus medius activity was significantly associated with several metrics quantifying the state of the stance limb. The regression coefficients are illustrated for (a) the control group, (b) the low fall risk hemiparetic group, and (c) the higher fall risk hemiparetic group. For all panels, the bar represents the regression coefficient, the error bar represents standard error, and asterisks (*) indicate a significant (p < 0.05) association. For purposes of visual comparison, the control group regression coefficients are indicated in panels (b) and (c) using horizontal dashed lines. Exclamation marks (!) indicate a significant difference between the indicated regression coefficient and the matching regression coefficient in the control group. x_CoM = center of mass displacement, v_CoM = center of mass velocity, GM_st = stance limb gluteus medius activity.