Fig. 1

WALK-MATE ROBOT consisted of three modules: control, actuator, and power. The control module synchronised the robot’s rhythm to the human’s arm-swing rhythm using the arm-swing angular measured by the encoders. The actuator module presented the rhythmic tactile stimuli on the left and right upper arms of the participants based on the robot rhythm synchronised to the arm-swing rhythm. The power module included the battery. The participants trained their arm-swing rhythm using WMR in the sitting position. The robot presented the rhythmic tactile stimuli while the participants swung their left and right arms backwards.