An Observation on Standing Ability of Japanese Males and Females

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An observation on standing ability of humans were done on the basis of data obtained from the measurements of contact surface of feet soles (CSFS) and electrogravitiogram (EGG), utilizing Pedoscope and Gravicorder. Subjects who took part in the measurements were all Japanese including 4790 males and females.Results examined were concluded as follows;1. It might be possible to make observations on standing ability in the following three periods;1) period of growth...a man of 0-19 years of age. 2) period of maturation...a man of 20-49 years of age. 3) period of declination...a man of over 50 years of age.2. It was found that the laterality should play an important role in standing ability. This means that standing posture of humans is well maintained by support of the left foot with supplementary function of the right foot.3. It was proved that there was significant difference between male and female in standing ability.4. The placement of center of gravity when standing on both feet showed the tendency of shifting forward with advance in age. In case of normal adults at all ages it was placed at 47% from heel regarding foot length as 100%.5. There found regional differences among subjects in standing ability, which might be supposed to caused by some influences of life-environment upon individuals.
日本人類学会の論文