Fig. 3.

(a) Examples of temporal components of the fast and slow limbs for synergies 1 and 2 during the tied, split-belt, and wash-out blocks in a measurement. The lines are the means and the shaded areas are the standard deviations. (b) Results of statistical analysis of the differences between peak positions of the fast and slow limbs at each speed ratio. Each point represents the average of five steps. The averages of the data in each condition are connected by black lines for a series of the experimental blocks. * p < 0.05.