Biomedical Engineering Reference
In-Depth Information
Fig. 9.13
Circulation of robot tiles
Fig. 9.14
Robot tiles present virtual staircases
DV video recorder. Before walking, subjects were given instructions that they should
walk in small steps and could step on the edge between tiles.
As an index of stability of walking, maximum horizontal movements of the sub-
jects were evaluated. The maximum horizontal amplitude of the center of the subject's
lumbar on the monitor and the widths of the subject's lumbar on the monitor were
measured. The maximum horizontal movement equals to the horizontal amplitudes
divided by the width.
The results suggested that 78 % of the subjects were below 10 % horizontal move-
ments. For comparison, the horizontal movement in the real world was measured.
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