Abstract
Purpose: Freezing of gait (FOG), increasing the fall risk and limiting the quality of life, is common at the advanced stage of Parkinson’s disease, typically in old ages. A simple and unobtrusive FOG detection system with a small calculation load would make a fast presentation of on-demand cueing possible. The purpose of this study was to find a practical FOG detection system.
Patients and methods: A sole-mounted sensor system was developed for an unobtrusive measurement of acceleration during gait. Twenty patients with Parkinson’s disease participated in this study. A simple and fast time-domain method for the FOG detection was suggested and compared with the conventional frequency-domain method. The parameters used in the FOG detection were optimized for each patient.
Results: The calculation load was 1,154 times less in the time-domain method than the conventional method, and the FOG detection performance was comparable between the two domains (P=0.79) and depended on the window length (P<0.01) and dimension of sensor information (P=0.03).
Conclusion: A minimally constraining sole-mounted sensor system was developed, and the suggested time-domain method showed comparable FOG detection performance to that of the conventional frequency-domain method. Three-dimensional sensor information and 3-4-second window length were desirable. The suggested system is expected to have more practical clinical applications.
| Original language | English |
|---|---|
| Pages (from-to) | 1709-1719 |
| Number of pages | 11 |
| Journal | Clinical Interventions in Aging |
| Volume | 9 |
| DOIs | |
| Publication status | Published - 2014 Oct 8 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2014 Kwon et al.
Keywords
- Acceleration
- Detection system
- Freezing of gait
- Frequency-domain
- Parkinson’s disease
- Time-domain
ASJC Scopus subject areas
- Geriatrics and Gerontology