著者

礒部 真志

出版者

一般社団法人日本機械学会

雑誌

日本機械学會誌 (ISSN:00214728)

巻号頁・発行日

vol.108, no.1039, pp.434-435, 2005-06-05

参考文献数

1

著者

西田 光宏 礒部 真志 西脇 剛史

出版者

一般社団法人 日本機械学会

雑誌

ジョイント・シンポジウム講演論文集:スポーツ工学シンポジウム:シンポジウム:ヒューマン・ダイナミックス 2005 (ISSN:24331309)

巻号頁・発行日

pp.66-69, 2005-09-10 (Released:2017-08-01)

被引用文献数

1

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Exactly speaking, requirement properties in running shoes depend on the condition. Here, the condition indicates the runner's skill and running velocity. In the designing of running shoes for high speed, sole bending and torsional module are very important. Because large sole deformation causes energy loss in contact phase. In this study, propulsion efficiency calculated by the horizontal ground reaction force in running is proposed. The reduction in the propulsion efficiency is very effective for high speed running. The propulsion efficiency depends on the sole stiffness. In order to evaluate the propulsion efficiency, sole stiffness evaluation method based on eigenvalue analysis is introduced. After checking of the validity, the practical deigning of running shoes for high speed running is indicated.

著者

村上 治 礒部 真志 西脇 剛史

出版者

Japan Society of Sports Industry

雑誌

スポーツ産業学研究 (ISSN:13430688)

巻号頁・発行日

vol.9, no.1, pp.9-16, 1999

被引用文献数

7 2

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Flexibility is one of the important properties of running shoes. This function has been evaluated by the bending stiffness of the shoe sole. However, this evaluation method seems to be insufficient because it cannot consider the deformation behaviors of the human foot and the shoe sole. The human foot can flex at the metatarsophalangeal joint only. This indicates that deformation of shoe sole must be considered. In this study, a new evaluation method for the flexibility of running shoes based on shoe sole deformation is proposed. In this method, curvature distributions of the plantar surface and shoe soles were measured at heel 100 mm up. The proposed flexibility is evaluated from the comparison. The influences of groove position and depth upon the sole curvature distribution were measured by both the experiment and the finite element method. Then, based on the analytical results, several shoes were made and these were evaluated by sensory evaluation test. From these results, it is suggested that matching the maximum flexion point of the shoe sole with that of plantar surface is important.