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"What Health Professionals State About Exercise Balls as Chairs The medical community, however, is at best inconclusive about the health benefits or disadvantages of using an exercise ball as a workplace chair. I found two case studies of patients with low back pain whose conditions improved after consistently using the gym ball, but, on the other hand, The New York Times reports that insurance claims of exercise balls enhancing position are likewise doing not have in evidence (and drawbacks regarding spine shrinking might offset the increased muscle activity)."^^<http://www.w3.org/2001/XMLSchema#string>
<http://iytmed.com/sitting-stability-ball-work-office/>