Fig. 4
From: Rectus femoris hyperreflexia contributes to Stiff-Knee gait after stroke
Diminished knee flexion is correlated with increased RF H-reflex in post-stroke SKG. Relations between swing-phase knee flexion angle and RF reflex excitability in post-stroke SKG shows a strong negative effect (red triangles) whereas no significant correlation was observed in healthy Walk (green triangles) and healthy Walk↑ (blue triangles). The lines and shaded areas indicate the linear regression fits and 95% confidence interval respectively for the corresponding groups