My lumbar discs are shot. Has using this helped deal with this chronic condition?

I'm an therapist and ergonomic specialist, I just happened to be looking at this item and figured I'd throw in my 2 cents. I would recommend finding a chair with good back support and allow yourself to recline to a position where your trunk is approx.110-120 degrees with the floor. This position basically places some of the weight of your trunk onto the back of the chair rather than your lumbar spine and reduces the compressive forces that would normally bear down on your spine. Without knowing your specific medical situation you kind of have to take the advise with a grain of salt but I'd recommend something with dynamic and adjustable back support, I don't think this product would be great for your (or most people's) situation.

How tall is it from the ground to the top of the ball ? Thank you.

Because the chair is at work I am not sure of exact height, but I am 5' tall and it is the first chair I have ever had that my feet touch the ground. My daughter has one and she is 5'10". both of us agree that it is the most comfortable chair we have ever had at work. The secret is try different amounts of air....most times less is better.

I am 4'11" tall, just under the min height for this chair. will it still work for me? the child size only goes to 51" lol.

I am 4’ 11 3/8”, and I think the ball is too small. Just a quick video to show how short the chair is compared to me. Or maybe my desk is just tall. It’s definitely awkward, and I am thinking about sizing up on the ball or getting the leg extenders.

Does the back rest have a purpose aside from looks?

This is really supposed to be a stretchIng chair so yes, you use it as a crop to hold on to. I have also leaned against the back rest. But I feel the purpose of this chair helps you sit up straight (so you don't want to slouch or lean back). Also it helps take the pressure of my hips and back. I have degenerative disc disease and this chair really seems to help me get through the day at my desk job.

Shape	Round
Item Depth	22 inches
Product Care Instructions	乾拭き
Global Trade Identification Number	00018713588678
Assembly Instructions Description	工具1つで簡単に組み立てる必要があります
Material	Polyvinyl Chloride (PVC) Vinyl
Manufacturer	Gaiam
UPC	018713588678
Model Number	05-58867
Sport Type	Exercise & Fitness
Batteries Included	No
Diameter	52 Centimeters
Maximum Weight Recommendation	299 Pounds

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