Figure 1.

Mean and standard deviation of the spatial-temporal parameters for free and adaptive gait (approach phase). The table shows a summary of the significant difference for the parameters. FG: free gait without dual task; AG: adaptive gait without dual task. In the figure, (a) differences between free gait without dual task and free gait with dual task; (b) differences between free gait without dual task and adaptive gait without dual task; (c) differences between free gait without dual task and adaptive gait with dual task; (d) differences between adaptive gait without dual task and adaptive gait with dual task.