Title:
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Comparative and adaptation of step detection and step length estimators to a lateral belt worn accelerometer
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Author:
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Sayeed, Taufique; Samà Monsonís, Albert; Català Mallofré, Andreu; Cabestany Moncusí, Joan
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial; Universitat Politècnica de Catalunya. GREC - Grup de Recerca en Enginyeria del Coneixement; Universitat Politècnica de Catalunya. AHA - Arquitectures Hardware Avançades |
Abstract:
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Parkinson’s Disease (PD) is a neurodegenerative
disease that predominantly alter patients’ motor performance
and compromises the speed, the automaticity and fluidity of
natural movements. The patients fluctuate between periods in
which they can move almost normally for some hours (ON state)
and periods with motor disorders (OFF state). Gait properties
are affected by the motor state of a patient: reduced stride length,
reduced gait speed, increased stride width etc. The ability to
assess the motor states (ON/OFF) on a continuous basis for long
time without disturbing the patients’ daily life activities is an
important component of PD management. An accurate report of
motor states could allow clinics to adjust the medication regimen
to avoid OFF periods. The real-time monitoring will also allow an
online treatment by combining, for instance, with automatic
drug-administration pump doses. Many studies have attempted
to extract gait properties through a belt-worn single tri-axial
accelerometer. In this paper, a user friendly position is proposed
to place the accelerometer and three step detection methods and
three step length estimators are compared considering the
proposed sensor placement in signals obtained from healthy
volunteers and PD patients. Adaptation methods to these step
length estimators are also proposed and compared. The
comparison shows that the adapted estimators improve the
performance with the new proposed step detection method and
reduce errors in respect of the original methods. |
Subject(s):
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-Àrees temàtiques de la UPC::Ciències de la salut -Parkinson disease(PD) -step length -gait speed -center of mass (COM) -Parkinson, Malaltia de |
Rights:
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Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
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Article - Published version Conference Object |
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