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Home-Based Monitor for Gait and Activity Analysis

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Walking capacities in multiple sclerosis measured by global positioning system odometer.

A Créange¹, I Serre, M Levasseur

¹Service de Neurologie, Centre Hospitalier Universitaire Henri Mondor, AP-HP, Université Paris XII, Créteil, France. creange@univ-paris12.fr

Multiple Sclerosis (Houndmills, Basingstoke, England)

|April 19, 2007

Summary

A new GPS odometer accurately measures maximum objective walking distance capacity in multiple sclerosis (MS) patients. This tool provides objective data for evaluating walking limitations beyond current clinical scales.

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Area of Science:

Neurology
Rehabilitation Medicine
Biomedical Engineering

Background:

Multiple sclerosis (MS) significantly impacts mobility and walking capacity.
Current clinical scales for assessing walking limitations in MS have limitations.
Objective and precise measurement of walking capacity is crucial for patient management.

Purpose of the Study:

To evaluate the utility of a Global Positioning Satellite (GPS) technology odometer for measuring maximum objective walking distance capacity (MOWD) in patients with MS.
To assess the correlation between MOWD and established MS disability and functional scales.

Main Methods:

Utilized a GPS technology odometer to objectively measure MOWD in MS patients.
Correlated MOWD measurements with Expanded Disability Status Scale (EDSS) scores.
Correlated MOWD measurements with the MS Walking Scale (MSWS-12) questionnaire.
Assessed the relationship between MOWD and time to walk 10 meters and walking speed.

Main Results:

MOWD demonstrated significant correlations with EDSS score (r²=0.41), MSWS-12 (r²=0.46), time to walk 10 m (r²=0.51), and walking speed (r²=0.75).
Walking limitations were quantifiable up to 4550 meters, exceeding the 500-meter limit of the EDSS.
High correlation (r²=0.75) observed between MOWD and walking speed.

Conclusions:

A GPS odometer is a promising objective tool for assessing and monitoring walking capacity in MS patients.
This technology offers a more sensitive measure of walking limitations compared to existing clinical scales.
Objective MOWD measurement can enhance the evaluation and follow-up care for individuals with MS.