Biomechanical Analysis of Stability of Walking Motion in Young Adults and in Aged Persons

概要

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Walking motions were analyzed from side views taken with a high speed video camera of 8 young adults and 10 aged persons.<BR>To assess postural control during walking, we placed wooden blocks of various heights (3, 5, 10, 15 and 20cm) in the subject's path and instructed him/her to step over the obstacle.<BR>1) The step lenth was much shorter in aged persons than in young adults. In young adult subjects, the step length increased with the height of an obstacle, from 0 to about 15cm, but decreased at 20cm. It is suggested that a change of strategy of step over an obstacle occurs at a certain height of the obstacle.<BR>2) The postural disturbance of the antero-postero sway of the trunk when stepping over an abstacle was much greater in aged subjects than in young adults.
日本めまい平衡医学会の論文