The suitability of shoes is thought to be of primary importance for toddling children. To collect basic information necessary for proper shoe design for toddlers, we conducted a 2-year study on the form and growth of the foot using 207 toddlers as subjects. Four foot measurings were conducted in the first year at 4-month intervals, beginning from November, 1991, and a fifth measuring was done 1 year later, in November, 1992. The measured items included length and breadth of the foot, ball joint girth, instep height, ankle girth, as well as stature and weight. Of the 207 subjects, 80 were measured all five times, with the total number of subjects throughout the 2-year period totalling 778.
As a result of the measurings, it was determined that the measured parts of the foot vary in their rate of growth. A particularly interesting finding was that the instep height showed no growth during the 2 years. Therefore special consideration must be paid to this part of the foot when designing infants' shoes.
By means of cluster analysis, the 778 subjects were classified as follows : lower in instep height; smaller in ball joint girth, in comparison with physical constitution; and larger in instep height and ball joint girth.
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