Key points are not available for this paper at this time.
The Big Robot Mk.1A has two legs with wheels, mounting the pilot at 5m height position. The robot goes forward according with the motion of the feet of the pilot. It is programed to make trajectory of head position of 5m humanoid. Thus, the pilot feels as if his/her body were extended to 5m giant.
Iwata et al. (Tue,) studied this question.