Cited by 258Balance, Gait, and Falls PreventionContext-Aware Activity Recognition SystemsGait Recognition and Analysis

Continuous Monitoring of Turning in Patients with Movement Disability

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El-Gohary, Mahmoud, Pearson, Sean, McNames, James, Mancini, Martina, Horak, Fay, Mellone, Sabato, Chiari, Lorenzo·2013·Sensors

Abstract

Difficulty with turning is a major contributor to mobility disability and falls in people with movement disorders, such as Parkinson’s disease (PD). Turning often results in freezing and/or falling in patients with PD. However, asking a patient to execute a turn in the clinic often does not reveal their impairments. Continuous monitoring of turning with wearable sensors during spontaneous daily activities may help clinicians and patients determine who is at risk of falls and could benefit from preventative interventions. In this study, we show that continuous monitoring of natural turning with wearable sensors during daily activities inside and outside the home is feasible for people with PD and elderly people. We developed an algorithm to detect and characterize turns during gait, using wearable inertial sensors. First, we validate the turning algorithm in the laboratory against a Motion Analysis system and against a video analysis of 21 PD patients and 19 control (CT) subjects wearing an inertial sensor on the pelvis. Compared to Motion Analysis and video, the algorithm maintained a sensitivity of 0.90 and 0.76 and a specificity of 0.75 and 0.65, respectively. Second, we apply the turning algorithm to data collected in the home from 12 PD and 18 CT subjects. The algorithm successfully detects turn characteristics, and the results show that, compared to controls, PD subjects tend to take shorter turns with smaller turn angles and more steps. Furthermore, PD subjects show more variability in all turn metrics throughout the day and the week.

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  1. [10]Mancini M. Salarian A. Chiari L. Horak F. Sensitivity Validity Reliability of a Novel Method to Detect APAs Prior to Gait Initiation Proceedings of the Joint World Congress of Gait & Mental Function and the International Society of Posture & Gait Research Trondheim, Norway 23–28 June 2012
  2. [25]Spain R. St George R. Salarian A. Bourdette D. Horak F. Validation of an Instrumented Test of Mobility, iMOBILITY, in Multiple Sclerosis Proceedings of the American Academy of Neurology 62nd Annual Meeting Toronto, ON, Canada 10–17, April 2010

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Authors
El-Gohary, M., Pearson, S., McNames, J., Mancini, M., Horak, F., Mellone, S., & Chiari, L.
Affiliations
  • APDM, Inc., Portland, OR 97201, USA
  • APDM (United States) (US)
  • Oregon Health & Science University (US)
Venue
Sensors
Publisher
MDPI AG
Published
2013-12-27
Volume
14
Issue
1
Pages
356-369
ISSN
1424-8220 (ISSN-L)
OpenAlex
W2067428313
Cited by
258
References
33
Citations by year
2026: 17 · 2025: 20 · 2024: 16 · 2023: 21 · 2022: 26 · 2021: 27 · 2020: 25 · 2019: 28 · 2018: 23 · 2017: 29 · 2016: 16 · 2015: 5 · 2014: 5
FWCI
22.53
Type
journal article
Language
en
Open access
Locations
  • Sensors (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PDXScholar (Portland State University) (submittedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institute on Aging (R01AG006457)
  • National Institute of Neurological Disorders and Stroke (R41NS076088)
Topics
  • Health Sciences › Health Professions › Physical Therapy, Sports Therapy and Rehabilitation › Balance, Gait, and Falls Prevention
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
  • Physical Sciences › Engineering › Biomedical Engineering › Gait Recognition and Analysis
Keywords
turning, Parkinson's disease, mobility impairment, wearable inertial sensors, fall risk, freezing of gait, gait analysis, home monitoring, older adults, daily activities, turning angle, step count
MeSH terms
Aged, Algorithms, Female, Persons with Disabilities, Humans, Male, Middle Aged, Movement, Parkinson Disease, Biosensing Techniques

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