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Wireless inertial measurement unit (IMU)-based posturography.

Identifieur interne : 000191 ( Main/Corpus ); précédent : 000190; suivant : 000192

Wireless inertial measurement unit (IMU)-based posturography.

Auteurs : Ariadna Valldeperes ; Xabier Altuna ; Zuri E Martinez-Basterra ; Marcos Rossi-Izquierdo ; Jesus Benitez-Rosario ; Nicolas Perez-Fernandez ; Jorge Rey-Martinez

Source :

RBID : pubmed:31444561

English descriptors

Abstract

BACKGROUND

Classical posturography techniques have been recently enhanced by the use of different motion tracking devices, but for technical reasons they are not used to track directly the body spatial position of a subject.

OBJECTIVE

To describe and clinically evaluate a wireless inertial measurement unit-based mobile system to track body position changes.

METHODS

The developed system used a calculus transformation method using the acceleration data corrected by Kalman and Butterworth filters to output position data. A prospective non-randomized clinical study involving 15 healthy subjects was performed to evaluate the agreement between the confidence ellipse areas synchronously measured by the new developed system and a classical posturography system while performing a modified clinical test of sensory interaction in balance.

RESULTS

The overall intra-class correlation index was 0.93 (CI 0.89, 0.96). Grouped by conditions, under conditions 1-4, Pearson's correlation was 0.604, 0.78, 0.882, and 0.81, respectively.

CONCLUSION

The developed wireless inertial measurement unit-based posturography system was valid for tracking the sway variances in normal subjects under habitual clinical testing conditions. Further studies are needed to validate this system on patients and also under other posture conditions.


DOI: 10.1007/s00405-019-05607-1
PubMed: 31444561

Links to Exploration step

pubmed:31444561

Le document en format XML

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<term>Actigraphy (methods)</term>
<term>Adult (MeSH)</term>
<term>Female (MeSH)</term>
<term>Humans (MeSH)</term>
<term>Male (MeSH)</term>
<term>Materials Testing (MeSH)</term>
<term>Movement (MeSH)</term>
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<term>Accelerometry</term>
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<term>Male</term>
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<p>
<b>BACKGROUND</b>
</p>
<p>Classical posturography techniques have been recently enhanced by the use of different motion tracking devices, but for technical reasons they are not used to track directly the body spatial position of a subject.</p>
</div>
<div type="abstract" xml:lang="en">
<p>
<b>OBJECTIVE</b>
</p>
<p>To describe and clinically evaluate a wireless inertial measurement unit-based mobile system to track body position changes.</p>
</div>
<div type="abstract" xml:lang="en">
<p>
<b>METHODS</b>
</p>
<p>The developed system used a calculus transformation method using the acceleration data corrected by Kalman and Butterworth filters to output position data. A prospective non-randomized clinical study involving 15 healthy subjects was performed to evaluate the agreement between the confidence ellipse areas synchronously measured by the new developed system and a classical posturography system while performing a modified clinical test of sensory interaction in balance.</p>
</div>
<div type="abstract" xml:lang="en">
<p>
<b>RESULTS</b>
</p>
<p>The overall intra-class correlation index was 0.93 (CI 0.89, 0.96). Grouped by conditions, under conditions 1-4, Pearson's correlation was 0.604, 0.78, 0.882, and 0.81, respectively.</p>
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<div type="abstract" xml:lang="en">
<p>
<b>CONCLUSION</b>
</p>
<p>The developed wireless inertial measurement unit-based posturography system was valid for tracking the sway variances in normal subjects under habitual clinical testing conditions. Further studies are needed to validate this system on patients and also under other posture conditions.</p>
</div>
</front>
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