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Journal of the American Podiatric Medical Association, Vol 88, Issue 6 259-267, Copyright © 1998 by American Podiatric Medical Association

JOURNAL ARTICLE

Variability of the center of pressure pattern integral during walking

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

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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Copyright © 1998 by the American Podiatric Medical Association.