Cover Journal of the American Podiatric Medical Association
Journal of the American Podiatric Medical Association
ISSN:
8750-7315
Online Publication Date:
Jun 1998

Variability of the center of pressure pattern integral during walking

TG McPoil Department of Physical Therapy, Northern Arizona University, Flagstaff 86011, USA.

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MW Cornwall Department of Physical Therapy, Northern Arizona University, Flagstaff 86011, USA.

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DOI:
https://doi.org/10.7547/87507315-88-6-259
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The objective of this study was to measure the between-trial variability of the center of pressure pattern integral (COPPI) at the shoe-floor interface and within the shoe. Ten trials of the COPPI were recorded simultaneously at the shoe-floor interface and within the shoe as ten subjects walked over ground in standardized footwear and with two types of foot orthoses. While the results showed that the within-shoe shoe-only and soft orthoses conditions caused the greatest decrease in the COPPI, it was extremely inconsistent-between trials, whether measured at the shoe-floor interface or within the shoe. This suggests that the COPPI is not an acceptable method of assessing the effectiveness of foot orthoses.

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