Factors Related to the Distance of the Seated Center of Pressure Path in the Sitting Lateral Reach Task

Abstract

[Purpose] To clarify the factors related to the distance of the seated center of pressure path (D-COP) in the sitting lateral reach task. [Participants and Methods] The subjects were 17 healthy adults. They performed a sitting right-side reach task with the right hand. Correlations of D-COP with the lateral reach distance (LR-D), the thorax and pelvic angles (Th-A, Pel-A), and the magnitude of the righting reaction converted into an angle were investigated. [Results] D-COP was found to correlate with LR-D, Pel-A of the frontal plane, and the horizontal planes of Th-A and Pel-A. Multiple regression analysis identified LR-D and Pel-A as significant correlations. [Conclusion] Factors related to D-COP in the sitting lateral reach task are LR-D, and Pel-A of the frontal plane.