Center of pressure movement during sitting on an unstable chair in eye-open and eye-closed conditions in healthy individuals: Pilot study

Abstract

Center of pressure (COP) movement during sitting on an unstable chair can be used to represent static trunk postural control. Theoretically, healthy individuals with intact trunk proprioception should have similar COP movement between eye-open and eye-closed conditions regardless of visual feedback. The custom software program has been developed to investigate COP movement in this group of participants. However, test-retest reliability of COP measurement has not been established. Therefore, the purposes of this study were to determine test-retest of COP measurement, and compare area of COP movement (aCOP) between eye-open and eye-closed conditions in healthy individuals.