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ISSN: 2168-975X

Brain Disorders & Therapy
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Review Article

A Newly Developed Wearable Device for Continuous Measurement of Gait- Induced Accelerations in Daily Activities

Hiroshi Mitoma1* and Mitsuru Yoneyama2
1Department of Medical Education, Tokyo Medical University, Japan
2MCHC R&D Synergy Center Inc., Tokyo, Japan
Corresponding Author : Hiroshi Mitoma, M.D., Ph.D.
Department of Medical Education
Tokyo Medical University
6-7-1 Nishishinjuku
Shinjuku-ku, Tokyo 160-0023,Japan
Tel: +81-3-3342-6111-5632
Fax: +81-3-3342-5049
E-mail: [email protected]
Received May 31, 2014; Accepted June 18, 2014; Published June 26, 2014
Citation: Mitoma H, Yoneyama M (2014) A Newly Developed Wearable Device for Continuous Measurement of Gait-Induced Accelerations in Daily Activities . Brain Disord Ther 3:134. doi:10.4172/2168-975X.1000134
Copyright: © 2014 Mitoma H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

For assessment of gait disorders, speed and stride are measured during 10m-walking test. However, changes in these two parameters are nonspecific since they are observed in various gait disorders. In addition, the10-m walking is short and reflects only one aspect of daily living and the results could be affected by emotional stress. To examine the step cycles and forces for step-in and kick off, which are directly controlled by a complex neural circuitry, during daily walking and over a long period of time, we developed a new wearing device, the portable gait rhythmogram (PGR), which monitors gait-induced accelerations for up to 70 hours. Quantitative analysis of the gait acceleration cycle and amplitude has allowed characterization of the bradykinematic features of gait disorders in patients with Parkinson’s disease: 1) A decrease in amplitude of gait acceleration in the early stages of the disease, which is compensated by fast stepping. 2) Subjective motor fluctuation did not necessarily coincide with changes in gait parameters. The results suggest that the rhythms-force correlation is set by the basal ganglia, but can be modified by the cerebral cortex. Analysis of voluntary gait in daily life could enhance our understanding of the pathomechanisms of gait disorders.

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