I have tried this chair and I really like it. You can visit a local Back store and try it out. It’s been around for a while so you can watch Ebay for deals.
The intended purpose of a kneeling chair is to reduce lower back strain by dividing the burden of the weight to the knees as well as the buttocks. People with coccyx or tailbone pain resulting from significant numbers of hours in a sitting position (e.g., office desk jobs) are common candidates for such chairs. However, it is not proven that kneeling chairs are an optimal solution, and many alternative chair styles should be considered.
A proper kneeling chair creates the open body angle by lowering the angle of the lower body, keeping the spine in alignment and the sitter properly positioned to task. The benefit of this position is that if one leans inward, the body angle remains 90 degrees or wider. A misconception regarding kneeling chairs is that the body’s weight bears on the knees, and thus users with poor knees cannot use the chair. In a proper kneeling chair, some of the weight bears on the shins, not the knees, but the primary function of the shin rests (knee rests) are to keep one from falling forward out of the chair. Most of the weight remains on the buttocks. Another way to keep the body from falling forward is with a saddle chair. This type of seat is generally seen in some sit stand stools, which seek to emulate the riding or saddle position of a horseback rider, the first “job” involving extended periods of sitting.
