Ergonomics is the study to increase the user efficiency at work with respect to comfort parameter.
Ergonomics about furniture:
It is essential to maintain good posture throughout the day for the health of the spine and to increase productivity of the work.
Ergonomics about chairs:
Human beings have to be on move. Over straining of back muscles is the usual problem when we continue to sit for long hours at work. A good ergonomic chair gives good support to the body by adapting to individual shapes. While sitting top of the monitor has to be level with your eyes. It is ideal that feet should be flat on the floor. A good chair has the mechanism of supporting, holding and moving well designed. A good chair should help you to get the 'S' curve which is the natural shape of the spine. A bad chair or wrong position will give you 'C' curve which is not a good seating position bad designed chair leads to excess pressure on spine thereby causing back pain over a period of time.
Benefits of LCD monitor arms:
Usage of it in the work desk has lot of benefits. User can adjust the monitor height based on the sitting comfort and posture. Worktables can be designed with less dimensions. Swiveling of arms means many users can view the same monitor.