Computer-aided Ergonomics - Example of A System

Example of A System

One example of a computer system that can be used as a computer-aided ergonomics system is that consider the human body as a dynamic multi-rigid-body system. The human model is a public domain model contains most of the bones, muscles and joints that are present in the human body. The model in total have more than 1000 muscle elements, and many muscle elements have been modeled with the most detailed muscle model theory described by Hill, A.V. in 1938. The muscle model contains information as physiological cross-sectional area, length, penation angle, ratio of red and white fibers and so on. The AnyBody modeling system is capable of modeling almost any human voluntary movement or static situation. One example of a model, could be a seated model, where the human body is placed in a chair, that have a seat, backrest, headrest, leg rest, footrest, and armrest. The model can then calculate the forces acting between the human body and the chair, as well as for example the forces between any given spinal vertebra. This could be used for finding the optimal seated posture for a person, who suffers from lower back pain, assuming that greater load on a vertebra result in greater pain.