Knee extensor co-contraction index

Knee extensor co-contraction index is associated with postural instability in humans.

“Age-corrected correlations revealed that knee extensor CCI values were significantly related to postural instability.”

Humansage-corrected correlation during upright static balance maintenanceknee extensor muscle

Aging-related changes in neuromuscular control strategies and their influence on postural stability

Scientific reports·17 Aug 2025