“An ergonomic office chair is a tool that, when used properly, can help one maximize back support and maintain good posture while sitting. However, simply owning an ergonomic office chair is not enough – it is also necessary to adjust the office chair to the proportions of the individual’s body to improve comfort and reduce aggravation to the spine…”
Source: Triano, John DC, PhD “Office Chair: How to Reduce Back Pain?” Spine-Health. N.p., 08 August 2002. Web. 08 July 2015.