Figure 4From: Effects of fatiguing isometric and isokinetic ankle exercises on postural control while standing on firm and compliant surfacesChanges in AP CoP velocity. Mean and standard deviation of AP CoP velocity (pooled data from isometric and isokinetic fatiguing exercises). AP CoP velocity significantly increased with fatigue for both surface conditions but appears to be greater when standing on compliant surface. ** p < 0.01; *** p < 0.001.Back to article page