A lot of people with back suffering grow it due to the lengthy quantity of time they spend sitting in a poor chair. Seldom this happens instantly or develops gradually over time. So using quality chair is really important.
In my job, i spend most of the time sitting in front of my computer so sometimes I feel some pain in my back. Although my chair has foam cushion I think it is not good enough. I hope our office admin, can find a comfortable office chair next time we purchase for replacements.