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Related Experiment Video

Updated: Jun 7, 2026

Experimental Methods to Study Human Postural Control

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

Static foot posture associated with dynamic plantar pressure parameters.

Deydre S Teyhen¹, Brian E Stoltenberg, Timothy G Eckard

¹Department of Physical Therapy, US Army Medical Department Center and School, 3150 Stanley Road, Fort Sam Houston, TX 78234, USA. deydre.teyhen@amedd.army.mil

The Journal of Orthopaedic and Sports Physical Therapy

|October 26, 2010

Summary

This study found that a pronated foot is more common than a supinated foot. A predictive model was developed to link static foot posture assessment (FPI-6) scores with dynamic plantar pressure during walking.

Related Experiment Videos

Last Updated: Jun 7, 2026

Experimental Methods to Study Human Postural Control

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

Area of Science:

Biomechanics
Podiatry
Sports Medicine

Background:

The Foot Posture Index (FPI-6) is a common static assessment tool.
Extreme FPI-6 scores are linked to higher injury risks.
Limited research exists on the correlation between FPI-6 scores and dynamic plantar pressure during gait.

Purpose of the Study:

To investigate associations between FPI-6 composite scores and dynamic plantar pressure measurements.
To describe FPI-6 subscale and composite score distributions in a sample of active adults.

Main Methods:

A controlled laboratory study involving 1000 active adults (mean age 30.6 years).
Static foot posture assessed using the FPI-6.
Dynamic plantar pressure measured using a capacitance-based pressure platform.
Correlation and hierarchical stepwise regression analyses were employed.

Main Results:

The average FPI-6 score was 3.4, with pronated foot classifications being 2.4 times more likely than supinated.
A 5-variable model explained 32% (R² = 0.32) of the variance in FPI-6 scores based on dynamic plantar pressure data.
Only 31 participants were classified as having a supinated foot based on FPI-6 subscales.

Conclusions:

A multivariate model incorporating clinically plausible variables effectively links static foot posture (FPI-6) with dynamic plantar pressure measurements.
The findings suggest potential need for adjusted FPI-6 cutoff values for screening supinated feet due to underrepresentation in the study sample.