Three Dimensional Analysis of Human Locomotion with on-line Computer System

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Head and body movements during walking on a treadmill were analyzed with a 3-D motion assessment system (ELITE system), which enabled real time analysis of target movement in each subject. Head roll in counter action to body motion in the coronal plane and pitch rotation in the sagittal plane were noted in the control data. Head movement became small due to compensatory counter motion, though lateral sway became larger in the upper part of the body than in the lower. After the recording of control data, ice water was irrigated into the ear canal for vestibular stimulation in six healthy subjects. Walking immediately after caloric stimulation showed that step length and gait cycle time became shorter than before caloric stimulation. Lateral sway and vertical translation of the head also increased. Head counter roll in the coronal plane and pitch rotation in the sagittal plane became indistinct after caloric stimulation. Behavioral changes in human locomotion after vestibular stimulation are described in this report.
日本めまい平衡医学会の論文