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"The error health care rates for these can be as high as 8%, plus or minus," says DuVal. "Other methods are highly accurate but much more complicated, like X-ray analysis, water displacement, and others. That's why BMI has its place in weight management. It health care may be crude, but health care it does give you a good idea of risk quickly and easily." DuVal says that fat-percentage measurement, despite the inaccuracies, can be useful. "In terms of ease-of-use and usefulness, the BMI can't be beat," he says. "But if a home, fat-measurement device helps someone stay focused on their diet and exercise level and motivated to stay healthy, then I think the device has a place in weight management." Published Nov. 25, 2002. SOURCES: Centers for Disease Control and Prevention • American Council on Exercise • Tammy Callahan, marketing manager, Life Measurement Inc. • Harry DuVal, PhD, associate professor of exercise science, University of Georgia • American Journal of Clinical Nutrition, September 2000 • Barbara J.
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