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Development of a Portable Acceleration Monitor Device and its clinical application for the Quantitative Gait Assessment of the Elderly

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4 Author(s)
K. Takenoshita ; Department of Robotics, Ritsumeikan University, Kusatsu, JAPAN, 1-1-1 Noji-Higashi, Kusatsu, Shiga 525-8577, JAPAN ; N. Shiozawa ; J. Onishi ; M. Makikawa

In this study, a handy gait assessment system with a tri-axial accelerometer has been developed and its application for a quantitative assessment of gait in the elderly was examined. This assessment system consists of a portable acceleration monitor device and PC analysis software. This portable device was fixed to the lower front of the subject, and the subject was asked to walk around a test course at a voluntary speed. The activities performed on the test course include standing up, normal walking, fast walking, and walking over a barrier. Gaits in 402 elderly people were measured three times every three months. These subjects were under nursing health services, such as expert place nursing, walking training, power rehabilitation, fall prevention training, and pool training. The measured acceleration was converted into relative velocity and relative displacement of the center of gravity of the subject. Four evaluation indices, i.e., physical activity, stability, symmetry, and average speed were calculated. The results reveal that both the physical activity and average speed decreased after six months under nursing services

Published in:

2005 IEEE Engineering in Medicine and Biology 27th Annual Conference

Date of Conference:

17-18 Jan. 2006