COMPARISON OF VERTICAL GRF OBTAINED FROM FORCE PLATE, PRESSURE PLATE AND INSOLE PRESSURE SYSTEM

  • Marcelo Castro
  • Denise Soares
  • Leandro Machado
Keywords: plantar pressure, plantar force, kinetic analysis, baropodometry, accuracy

Abstract

The aim of this study is to compare the vertical component of the ground reaction force (GRF) obtained from the force plate (FP) with those obtained from pressure plate (PP) and insole pressure system (IPS), and to compare the values found between the two pressure systems (PP vs IPS).Twelve subjects walked at a self-selected speed on a 6m walkway, where in the middle there was the FP, and over it, the PP. Simultaneously, the participants used the IPS. The results suggest that there are larger differences between the force values measured by the baropodometric systems when compared to FP, where the baropodometric systems seem to underestimate the force values. Therefore the absolute values recorded by the baropodometric systems should be interpreted very carefully and the comparison of results acquired by different systems should be avoided.