Research Article

Analysis of Human Standing Balance by Largest Lyapunov Exponent

Figure 1

The posture of the subject and testing system. Accelerometers are attached to the back, hip, and knee. Subjects stand on the motion platform with upper arms along their respective sides. Two feet are apart at the same width as their shoulder-width. Eyes are closed. PC-104 collects and saves the real-time sway data of subjects. Motion platform generates AP sinusoidal external disturbance to plantar. COP data are obtained by the force plate.