1997 Volume 40 Issue 2 Pages 125-131
We have developed a method of estimating, from somatometric values, foot deformation caused by wearing shoes. We measured 18 items of foot morphology by x-raying the bare and shoed feet of 218 samples, namely right and left feet of female subjects 59 women in their 20's and 50 in their 50's. For investigation, we set up 3 groups of the gained data, which are 1) somatometric measurement values of 8 itemes, 2) values of 18 bare foot measurement itemes, and 3) respective differences Δ values between bare and shoed foot values of 18 itemes, and then by cluster analysis, we classified them into 3 clusters respectively. The results are as follows :
(1) Investigating cluster-combinations of the 218 samples, we discover that 71% of all in their 20's and 50's are included in 5 cluster-combination types of great frequency.
(2) From these 5 types, it is possible to observe what parts of a foot are mostly pressed by shoes and subjected to deformation.
(3) By converting cluster analysis data into canonical discriminant analysis data, it is possible to calculate canonical variate (z1, z2) from somatometric measurements of 8 itemes, then we developed a method of estimating women's foot deformation by shoes.
