A practical method for the detection of freezing of gait in patients with Parkinson’s disease

Yuri Kwon, Sang Hoon Park, Ji Won Kim, Yeji Ho, Hyeong Min Jeon, Min Jung Bang, Gu In Jung, Seon Min Lee, Gwang Moon Eom, Seong Beom Koh, Jeong Whan Lee, Heung Seok Jeon

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


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 languageEnglish
Pages (from-to)1709-1719
Number of pages11
JournalClinical Interventions in Aging
Publication statusPublished - 2014 Oct 8
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2014 Kwon et al.


  • Acceleration
  • Detection system
  • Freezing of gait
  • Frequency-domain
  • Parkinson’s disease
  • Time-domain

ASJC Scopus subject areas

  • Geriatrics and Gerontology


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