Benchmarking study of the forces and centre of pressure derived from a novel smart-insole against an existing pressure measuring insole and force plate

摘要

This study identified a novel method of validating the force and Centre of Pressure (COP) obtained from pressure-measuring insoles, utilizing commercially available equipment. The focus of this research was to compare force and COP data between a newly developed Smart Insole (SI) and the Pedar (PE) insole using an independent point of reference device - the Kistler force plate (FP). Results showed good correlation between forces measured from both systems and the FP (R-2 > 0.98) with RMSE of 11.2% and 5.6% respectively. For the COP, the Systematic Error (SE), k, and R-2, are presented. For the SI, the COPx and COPy data achieved k = 0.763 and 1.009 (R-2 = 0.855 and 0.990). For the PE, k = 0.155 and 1.0143 (R-2 = 0.014 and 0.995). The SI is comparable to PE in terms of accuracy when measuring force and COP, with the advantages of being accurate, portable and cheaper. (C) 2019 Elsevier Ltd. All rights reserved.