Selection Procedures for the Largest Lyapunov Exponent in Gait Biomechanics.

ABSTRACT: The present study was aimed at investigating the effectiveness of the Wolf et al. (LyE_W) and Rosenstein et al. largest Lyapunov Exponent (LyE_R) algorithms to differentiate data sets with distinctly different temporal structures. The three-dimensional displacement of the sacrum was recorded from healthy subjects during walking and running at two speeds; one low speed close to the preferred walking speed and one high speed close to the preferred running speed. LyE_R and LyE_W were calculated using four different time series normalization procedures. The performance of the algorithms were evaluated based on their ability to return relative low values for slow walking and fast running and relative high values for fast walking and slow running. Neither of the two algorithms outperformed the o

SUBMITTER: Raffalt PC 

PROVIDER: S-EPMC6438190 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature