Thread: average size?
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Old 01-13-10, 11:57 AM
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deraltekluge
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Originally Posted by chewybrian
On the BMI chart, it's just off normal and a few pounds into overweight. You may or may not really be overweight, depending on build and muscle.
The BMI formula is screwed up for tall people. It uses the square of the height...it should use a higher power, perhaps 2.5 or so. The result is that the "normal" weight it gives for tall people is too low.

For instance, a 5 foot tall, 110 lb. person would have a BMI of 21.5, right in the middle of the "healthy" range. For a 6 foot person, the weight would be 158.4 lb. to get the same BMI, and for a 7 foot person it would be 215.6 lb. I can believe that 110 lb. for a 5 foot person could be a "healthy" weight, but the 7-footer would be near emaciation.
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