2018 Volume 24 Pages 169-179
The purpose of this study was to clarify the characteristics of the change in the medial longitudinal arch height occurring inside the shoe during long distance running. The subjects were seven male college students who had experience of running 10 km distance and running habits. Specially modified shoes and socks were worn by the subjects so that reflective markers could be affixed directly to the feet. The trial was done in order of (1) static standing posture, (2) 15 m running on the flat road, (3) 10 km running on the treadmill, (4) 15 m running on the flat road, and (5) static standing posture. The results were summarized as follows : 1) In the static standing posture after long-distance running, the arch height ratio decreased. 2) The medial longitudinal arch during running was gradually deformed. 3) Comparing the arch height at the 0 km point and the 10 km point, the minimum value of the arch height ratio increased in some subjects. 4) Factors that caused the minimum value of the arch height ratio to change were the forefoot segment angle, the lower leg segment angle, and the position of the foot center of gravity relative to the center of gravity.
