Fig. 6
Motor strategies when pointing to the different targets and their associations with end-point performance. Boxplots depicting (A) hip muscle torque, (B) knee muscle torque, and (C) ankle muscle torque in the control (black) and SCI (orange) groups in both visual conditions (FV: full vision; OV: obstructed vision) across all three targets. Asterisks represent significant post-hoc group differences between controls and the SCI group averaged across visual conditions. Post-hoc comparisons were conducted after detecting a significant group x target interaction in the linear mixed-effect model (see text for full statistical details). Scatterplots of (D) hip muscle torque when pointing to the KA target, (E) knee muscle torque when pointing to the HKA target, (F) knee muscle torque when pointing to the HA target, and (G) ankle muscle torque when pointing to the HKA target, in relation to horizontal end-point error (left panels), vertical end-point error (middle panels), and foot-path area (right panels) in individuals with SCI. The regression line and R2 values were estimated using linear mixed-effect models fitted to assess the crude relationship between the two variables of interest. The black ellipse represents the area encompassing 95% of the control data