Medical

Black's formula

Black’s formula

An obsolete formula once used to calculate strength in an adult. The adult’s height (inches) is subtracted from his or her weight (pounds) and added to the chest circumference (inches) at full inspiration. About 120 is considered very strong, and less than 80 is considered very weak.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
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