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Concurrent Validity and Test-Retest Reliability of Pressure-Detecting Insoles for Static and Dynamic Movements in
Johanna Lambrich1, Marco Hagen1, Gerrit Schwiertz1
1Division of Movement and Training Sciences/Biomechanics of Sport, University of Duisburg-Essen, 45141 Essen, Germany.
Sensors (Basel, Switzerland)
|July 11, 2023
Summary
Pressure-detecting insoles offer a valid and reliable method for estimating vertical ground reaction force (vGRF) during various activities. These insoles provide accurate measurements comparable to force plates, even outside laboratory settings.
Area of Science:
- Biomechanics
- Sports Science
- Human Movement Analysis
Background:
- Force plates are the gold standard for measuring vertical ground reaction force (vGRF).
- Pressure-detecting insoles offer potential for vGRF measurement in field settings.
- The validity and reliability of these insoles compared to force plates require investigation.
Purpose of the Study:
- To assess the concurrent validity of pressure-detecting insoles against force plates.
- To evaluate the test-retest reliability of pressure-detecting insoles.
- To determine the accuracy of vGRF estimation during static and dynamic movements.
Main Methods:
- Twenty-two healthy adults participated in the study.
- Simultaneous data collection using pressure-detecting insoles and force plates.
- Measurements were taken during standing, walking, running, and jumping, repeated 10 days apart.
Main Results:
- Excellent concurrent validity (ICC > 0.75) was observed between insoles and force plates.
- Insoles showed excellent test-retest reliability for most conditions.
- A slight underestimation of vGRF variables was noted, with low SEM and MDC95% values.
Conclusions:
- Pressure-detecting insoles provide valid and reliable vGRF estimations.
- These insoles are suitable for field-based biomechanical analysis.
- The findings support the use of insoles for monitoring vGRF in diverse environments.
