Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 06, 2021 - June 08, 2021
Stability while walking is essential as accidents may lead to severe injuries. In this study, we calculated the margin of stability (MoS) and maximum Lyapunov exponent (λs), the two prominent stability indices of walking, using a gait database of 300 people with 1.5 strides. Thus far, the relationship between these indices and other gait parameters including joint angles has not been investigated for such a large participant pool. Therefore, we determined the relationship between these stability indices and gait parameters by using multiple regression analysis. The results showed that the MoS was dominated by walking speed in the forward direction and associated with various joint angles in the lateral direction. Conversely, no relationship was identified betweenλs and gait parameters. Although the MoS and λs represent certain aspects of gait stability, they are either independent or associated with only a part of gait parameters. Thus, the feature of gait motion represented by λs does not rely directly on the gait parameters. λs is not expected to be easily improved by modifying a specific gait parameter.
