Evaluation of the IngVaL Pedobarography System for Monitoring of Walking Speed

Healthcare Informatics Research
Per Anders Rickard HellstromMia Folke

Abstract

Walking speed is an important component of movement and is a predictor of health in the elderly. Pedobarography, the study of forces acting between the plantar surface of the foot and a supporting surface, is an approach to estimating walking speed even when no global positioning system signal is available. The developed portable system, Identifying Velocity and Load (IngVaL), is a cost effective alternative to commercially available pedobarography systems because it only uses three force sensing resistors. In this study, the IngVaL system was evaluated. The three variables investigated in this study were the sensor durability, the proportion of analyzable steps, and the linearity between the system output and the walking speed. Data was collected from 40 participants, each of whom performed five walks at five different self-paced walking speeds. The linearity between the walking speed and step frequency measured with R2 values was compared for the walking speed obtained 'A' only using amplitude data from the force sensors, 'B' that obtained only using the step frequency, and 'C' that obtained by combining amplitude data for each of the 40 test participants. Improvement of the wireless data transmission increased the percentage...Continue Reading

References

Feb 3, 2004·The American Journal of Sports Medicine·Eric EilsDieter Rosenbaum
Jan 15, 2005·European Journal of Applied Physiology·G J BastienN C Heglund
Feb 1, 2005·Foot & Ankle International·Ava SegalBruce Sangeorzan
Dec 2, 2005·Journal of Rehabilitation Research and Development·Jama L PurserPablo Lapuerta
Apr 21, 2010·IEEE Transactions on Bio-medical Engineering·Edward S SazonovRaymond Browning
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Mar 23, 2012·Sensors·Weijun TaoHutian Feng
Mar 7, 2017·Healthcare Informatics Research·Mostafa HaghiRegina Stoll

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Software Mentioned

IOIO
Windows
ioiometer
IngVaL
RStudio
- pc
R

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