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The Relationship Between Foot Feature Parameters and Postural Stability in Healthy Subjects
Kyung-Ryoul Mun1, Sungkuk Chun2, Junggi Hong3
1Korea Institute of Science and Technology, Seoul.
Human Factors
|March 6, 2019
Summary
The study reveals that foot size, medial longitudinal arch (MLA), and lateral longitudinal arch (LLA) features significantly correlate with postural stability. MLA impacts anterior-posterior stability, while LLA influences medio-lateral and total stability.
Area of Science:
- Biomechanics
- Human Locomotion
- Postural Control
Background:
- The distinct contributions of the medial longitudinal arch (MLA) and lateral longitudinal arch (LLA) to human gait and postural stability remain underexplored.
- Understanding these contributions is crucial for assessing foot function and developing targeted interventions.
Purpose of the Study:
- To investigate the correlation between foot feature parameters, specifically MLA and LLA, and postural stability.
- To differentiate the roles of MLA and LLA in maintaining balance.
Main Methods:
- Utilized a newly developed Foot Feature Measurement System (FFMS) to extract parameters in non-weight-bearing (NWB) and weight-bearing (WB) conditions.
- Assessed postural stability using single-leg-standing (SLS) parameters and center of pressure (CoP) metrics.
- Employed bivariate correlation analysis to examine relationships between foot characteristics and postural stability.
Main Results:
- Foot length and width negatively correlated with CoP distance in medio-lateral (ML) and total directions.
- Foot dimensions in NWB/WB conditions positively correlated with CoP distance in the anterior-posterior (AP) direction.
- MLA area correlated with AP stability, while LLA height correlated with AP stability; LLA ratios showed moderate correlation with ML and total stability.
Conclusions:
- Foot size (length and width) is a significant factor in postural stability.
- MLA features are primarily associated with AP postural stability.
- LLA features are predominantly linked to ML and overall postural stability, indicating distinct functional roles.
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