Fig. 8
Associations between knee muscle torque with proprioceptive sense at the HKA target. (A) Shank segment angles, knee power, and knee joint torque signals for two individuals with SCI. SCI04 had worse proprioceptive sense than SCI 01. For the power traces, positive values represent generative and negative values represent absorptive power. Flexor torques are positive. Arrows indicate regions of interest highlighting the effects of greater proprioceptive deficits on controlling lower limb dynamics. (B) Scatter plot of the knee muscle torque produced by each individual with SCI when pointing to the HKA target in relation their movement detection sense score, irrespective of visual condition. The regression lines and R2 value were estimated using a linear mixed-effect model fitted to assess the crude relationship between knee muscle torque and movement detection sense. The black dot and error bars represent the mean and standard deviation (SD) of the control data