Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Measurement of Ankle Joint Movements using IMUs during Running

Version 1 : Received: 29 May 2021 / Approved: 31 May 2021 / Online: 31 May 2021 (12:47:51 CEST)

How to cite: Kim, B.; Hong, S.; Oh, I.; Lee, Y.; Kee, I.; Lee, S. Measurement of Ankle Joint Movements using IMUs during Running. Preprints 2021, 2021050771 (doi: 10.20944/preprints202105.0771.v1). Kim, B.; Hong, S.; Oh, I.; Lee, Y.; Kee, I.; Lee, S. Measurement of Ankle Joint Movements using IMUs during Running. Preprints 2021, 2021050771 (doi: 10.20944/preprints202105.0771.v1).

Abstract

Gait analysis has historically been implemented in laboratory settings with expensive instruments; however, recently, wearable sensors have allowed the integration into clinical applications and use in daily activities. Previous studies have shown poor validity of ankle joints using inertial measurement units (IMUs), especially for small movement ranges. The purpose of this study was to validate the ability of commercially available IMUs to accurately measure the ankle joint angles during running. Ten healthy subjects participated in the study. Validation was performed by comparing the ankle joint angles measured using the wearable device with those obtained using the gold standard motion capture system during running. Reliability was evaluated using the intraclass correlation coefficient and standard error of measurement, whereas validity was evaluated using Pearson coefficient correlation method. Day-to-day reliability was excellent in the two planes for ankle joints. Validity was good in both sagittal and frontal planes for ankle joints. The results suggested that the developed device might be used as an alternative tool to the 3D motion capture system.

Subject Areas

Validation; Kinematic; Inertial measurement units; motion analysis; gait

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