PROBLEM TO BE SOLVED: To provide a centroid oscillation system quantitatively determining oscillation in a dynamic equilibration function test using a stabilometer.SOLUTION: The centroid oscillation system includes: a stool on which a subject is placed a means which determines a centroid oscillation trajectory on X-Y coordinates from time-series data of the center-of-gravity position of the subject when stepping at a fixed tempo for a predetermined time by alternately raising the ankles with the toes being landed on the stool a means which determines an outer circumferential area A of the centroid oscillation trajectory a means which determines a total trajectory length L of the centroid oscillation trajectory and a means which determines a ratio of the outer circumferential area A to the total trajectory length L as a parameter d for determining an equilibration function failure in the dynamic equilibration function test.COPYRIGHT: (C)2012,JPO&INPIT【課題】重心動揺計を用いた動的平衡機能検査において、動揺を定量化できる重心動揺システムを提供する。【解決手段】被験者が載る1つの踏み台と、被験者が前記踏み台上でつま先をつけたまま踵を交互に上げて一定のテンポで所定時間足踏みした時の被験者の重心位置の時系列データからX-Y座標上の重心動揺軌跡を求める手段と、重心動揺軌跡の外周面積Aを求める手段と、重心動揺軌跡の総軌跡長Lを求める手段と、動的平衡機能検査における平衡機能障害を判定するためのパラメータdとして、外周面積Aと総軌跡長Lとの比を求める手段と、を備えた重心動揺システム。【選択図】図1
