I used to have back pain after seating long hours at the computer, and three months ago I discovered the gym ball as a desk chair. My back pain was gone in two weeks and I feel great with this new and very comfortable seating position. I am using a 75 cm ball. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1924654/ Anybody else tried it?
I used to use one back when I worked at a company that was later sold to Gaiam. I think we got them wholesale or something. I have to say I think my posture was worse and I had MORE back pain sitting on a ball -- I slouched even more than I normally do. My sense is that standing desks are where it's at. Lots of people in my office use them in conjunction with couch breaks.
I've sat on a ball for the past four years and it's the reason I don't have back pain anymore. My back would go out periodically before using the ball.
I'd recommend it to anyone. Get a cheap one at first and try it out. The warning I'd offer are these:
I used one and looking back, the reason for improving my backpain was that it forced me to sit with better posture.
Once I found the 8 Steps to a Pain Free Back by Gokhale, I have not needed to use the ball because I have improved my posture in sitting, standing, and walking.
I used one at home for a few months, but found myself too fidgety on it: I often rolled around and ended up kind of crouched over it with my chin on my hands/arms on my desk.
Seeing the other comments, I'm thinking now that it might've been too tall for me. If I recall correctly, I couldn't sit with my feet flat on the ground unless I was sitting nearly on the front of the ball.
So perhaps the lesson to learn from my experience is to make sure you get the right size ball. 8)
i've been using this balance ball chair for a year now. definitely took some getting used to, but i love it