Bilateral Foot Center of Pressure during Trunk Forward Bending and Reaching

This study analyze bilateral foot center of pressure (CoP) and compare the extent of bilateral lower limb involvements during trunk forward bending and reaching in stroke patients. The measures of limb involvements were maximum CoP displacement in anterior-posterior direction and the proximal and distal ends of the CoP trajectory. Side of foot and target location interaction effects were significant for maximal CoP anterior-posterior displacement The target location didn´t affect the proximal end of the CoP trajectory neither did it affect the difference between feet. The target location affected the distal end of the CoP trajectory and the CoP maximal anterior-posterior displacement significantly, but only the later parameter showed the difference between feet for specific target locations. The pedeography also show the target effects on CoP and different extent of bilateral limb involvements. The extent of bilateral limb involvement varied with target locations. The relationship between foot CoP and neuromuscular control needs further investigations.