title: Enhanced data consistency of a portable gait measurement system.
abstract: A gait measurement system is a useful tool for rehabilitation applications. Such a system is used to conduct gait experiments in large workplaces such as laboratories where gait measurement equipment can be permanently installed. However, a gait measurement system should be portable if it is to be used in clinics or community centers for aged people. In a portable gait measurement system, the workspace is limited and landmarks on a subject may not be visible to the cameras during experiments. Thus, we propose a virtual-marker function to obtain positions of unseen landmarks for maintaining data consistency. This work develops a portable clinical gait measurement system consisting of lightweight motion capture devices, force plates, and a walkway assembled from plywood boards. We evaluated the portable clinic gait system with 11 normal subjects in three consecutive days in a limited experimental space. Results of gait analysis based on the verification of within-day and between-day coefficients of multiple correlations show that the proposed portable gait system is reliable.
authors.affiliation: Graduate Institute of Automation Technology, National Taipei University of Technology, Taipei, Taiwan.
authors.forename: Hsien-I
authors.initials: HI
authors.lastname: Lin
authors.forename: Y P
authors.initials: YP
authors.lastname: Chiang
mesh_terms: D005684:Gait; D006801:Humans; D009928:Organ Specificity; D011786:Quality Control; D012046:Rehabilitation / Q000295:instrumentation*; D012984:Software; D014584:User-Computer Interface