Figure 4
From: Active robotic training improves locomotor function in a stroke survivor
(A) Antero-posterior (top panel) and (B) vertical ground reaction forces (middle panel) recorded during overground walking. (C) The bottom panel represents the changes in maximum correlation and lag magnitude (ms) obtained from the cross-correlation analyses between the paretic and non-paretic leg antero-posterior and vertical ground reaction forces. For comparison, GRF data from healthy adults that have been published elsewhere are shown on the right column. Note that the two measures of between-leg symmetry showed a trend toward greater symmetry (increase in maximum correlation, decrease in lag magnitude) with training.