Analysis for inverted pandulums use for human sway modeling

The human postural control system to maintain a vertical posture all the time stimulates the musculoskeletal system to continuous motion called sway. This movement rely on a slight rocking in sagittal and frontal planes, reminds inverted pendulum in their behavior. During balancing center of gravity (COG) projection on the ground can be described by a trajectory, which in the case of a healthy person is in the feet contour. The occurrence of internal or external disruption can cause deviation of the COG outside the stable range. In this case, the imbalance man reacts in accordance to one of the strategies to maintain a balance. Such strategies correlate with the performance of the reverse pendulums with varying degrees of complexity. The article presents an analysis of the pendulums in relation to the issue of maintaining the balance by man.