Fig. 2

Evaluation of TPDS using a digital caliper. A digital caliper was used to measure TPDS of both soles of the participants’ feet. To measure TPDS, the participants closed their eyes, the soles of their feet were then brought into contact with the two points of the digital caliper, and the minimum distance between the two points of the calipers at which the participants could identify the two points distinctly was measured. TPDS: two-point discrimination sense