2023 journal article

A simplified model for whole-body angular momentum calculation


By: M. Liu n, A. Naseri n, I. Lee n, X. Hu n, M. Lewek n & H. Huang n 

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: Angular momentum; Gait stability; Wearable system; Rigid body model
MeSH headings : Humans; Biomechanical Phenomena; Gait; Lower Extremity; Amputation, Surgical; Motion
Source: Web Of Science
Added: February 27, 2023

The capability to monitor gait stability during everyday life could provide key information to guide clinical intervention to patients with lower limb disabilities. Whole body angular momentum (Lbody) is a convenient stability indicator for wearable motion capture systems. However, Lbody is costly to estimate, because it requires monitoring all major body segment using expensive sensor elements. In this study, we developed a simplified rigid body model by merging connected body segments to reduce the number of body segments, which need to be monitored. We demonstrated that the Lbody could be estimated by a seven-segment model accurately for both people with and without lower extremity amputation.