I purchased this Gaiam Balance Ball Chair in late December 2005.
It's an item you have to get used to if you've sat in regular office chairs for a long time (I've sat in padded-foam/plastic chairs for over 15 years, over 40 hours per week). I'm 6 feet tall, 155 lb., and practice Vinyasa Yoga every now-and-then, and I am no Yoga expert by any means.
1. The purpose of doing Yoga ball exercise is to align your body through training the core muscle in your torso--your abdominal muscle will help support your back. This practice, over time, will give you better posture. Also, "constant-centering" myself on the ball reminds me not to bend forward my shoulders or slouch.
2. My old office chair has a pneumatic height adjustment at 19"-20" This ball seat height (with the doughnut-shape base) is about 23" tall; sitting down on it, at my weight, brings it down to about 18"--of course, it will depend on your monitor/keyboard setup and on how much air you put in the ball. I raised the table height 3" higher and purchased an adjustable keyboard/mouse extension tray. I make the ball as firm as possible.
3. The back support is detachable (which I've done) and allows you to center yourself over it more. Don't lean on the back support for too long, or you may hurt your lower back.
4. You will experience some back pain for a few days, some shoulder pain if you're use to having an armrest, and neck pain if you had a headrest. Keeping my chest open and head up help my abs stay taut.
Minus half-star for the rolling wheels because they sometimes trip me over when I get up and stand. So, I spread my feet and use my leg muscles to stand upright. I recommend it still because it motivates me to get up and walk around. It's not healthy to allow the legs be pooled with blood (which causes veining) over two-three hours at a time. This item is at a decent price range, offered here on Amazon. Hope this helps!
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342 of 361 people found the following review helpful
surprisingly comfortable
By thedrymock on January 19, 2006
Color Name: Black
The chair is surprisingly comfortable. I'm not sure how *much* it helps me with balance or toning, but I do actually feel like I'm using my muscles a little more than usual while sitting all day at the office, so I feel pretty good about it. And it looks really nice, too.
Overall I like the chair a lot, just one real complaint. There is no height adjustment. For me it's not much of an issue because my desk happens to be at around the right height. But this might be a problem for someone else. I suppose you could let some air out of the ball to make it a little lower, but that doesn't strike me as an ideal solution.
I do have one suggestion for anyone buying this chair. There are four wheels that you snap into the proper places onto the bottom of the chair when you're assembling it. Two of the four have locks you can flip down to prevent the wheels from rolling. I have found that with these two wheels attached on the front side of the chair, my feet keep accidentally hitting the locks and activating them so that it's difficult to roll the chair. I'd suggest putting these locks on the back side of the chair unless you plan to leave the locks activated most of the time.
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338 of 365 people found the following review helpful
Lot of Time at the Computer?! You will love this!
By JessicaLMould on May 3, 2005
Color Name: Black
I used one of these at my last job. This is a wonderful chair. The first time that I sat on it I fell off, but then once I learned how to sit on it, it was amazing. It kept my back straight, and kept me sitting upright, and I didn't feel so sleepy after 8 hours at the computer. I love this chair. It it worth the price.
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152 of 164 people found the following review helpful
Great Chair!
By Daniel Ross on January 31, 2007
Color Name: Black Verified Purchase
I purchased this chair because I have lower back pain. I've had it now for about 6 months and find that at the end of the day my back feels much better. I don't use the ball for working out, I only use it as an office chair.
It definitely takes a little while to get used to it. The first few days, my back was sore and I almost went back to my old chair. It was sore, but it didn't hurt. After about a week, I stopped noticing my back being sore. I'm pretty sure it is because my back had to build up the muscles to support my body. Which is exactly what I was hoping it would do. The chair doesn't allow you to lean on the back of a normal office type chair, therefore forcing you to use your back muscles.
It doesn't force you to have perfect posture, but without the ability to lean on a backrest, it reminds me throughout the day to sit up right. After a couple of months, I do it naturally now.
I realized how much the chair has helped with my back pain last week. One of my co-workers asked to try the chair out for a couple of days. My back hurt at the end of the day significantly more than it has in months. Pretty conclusive proof that this works for me.
Be warned, you'll get a lot of funny looks when people first see it. Even the UPS guy laughed at me while delivering it. I don't care! It makes me feel better.
The bottom line: Be prepared for a week or two of time to get used to it and build up the back muscles. I think afterward you'll thank yourself.
***UPDATE*** Almost 2 years now since I bought this chair and I still sit on it every day. Have not had lower back pain at the end of the day since a few weeks after I bought it. Still 5 stars for me!
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276 of 311 people found the following review helpful
try plain ball instead
By Jonathan Kandell on October 29, 2005
Color Name: Black
I've been using just a plain gym ball as a chair instead. You don't really need or miss the back because the ball gets you to hold your spine in correct allignment. So I recommend just buying a ball (much cheaper) and using that alone.
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