足底壓力感測元件數量與位置之分析

Measure the center of pressure (CoP) and vertical ground reaction force (vGRF) by the wireless insole plantar pressure system, determine the effect of the sensor number on CoP and vGRF for normal arch and low arch. Methods: Twenty seven participants were recruited to perform walking, jogging, and running in their selected speed. During the experiment, the foot pressure signals were accessed by the Pedar-X system. Calculate the trajectory of CoP and vGRF on foot, setting the Pedar-X system as a gold standard to compare CoP and vGRF during experiment. Present the errors between the gold standard and the experiment data by the root-mean-square errors. Results: CoP and vGRF were measured in normal arch and low arch, the correlation between 11-sensor configuration and gold standard are 0.89 and 0.95, respectively. Conclusions: Insole plantar pressure system with 11 sensors can provide high accuracy on estimating CoP and vGRF. The result can be used to develop low-cost insole plantar pressure system. Future studies should focus on recruiting more participants using this configuration in other sports.