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Weight for Age

 
Food and Nutrition: weight-for-age

An index of the adequacy of the child's nutrition to support growth. Standard weight-for-age is the 50th centile of the weight-for-age curves of well-fed children. See also anthropometry.

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Wikipedia: Weight for Age
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Weight for Age (WFA) is a term in Thoroughbred horse racing which is one of the conditions for a race. It means that a horse will carry a set weight in accordance with the Weight for Age Scale. This weight varies depending on the horse’s age, its sex, the race distance and the month of the year. Weight for age races are usually Group 1 races, races of the highest quality.

WFA is a method of trying to equal out the physical progress which the average thoroughbred racehorse makes as it matures. The thoroughbred matures extremely quickly compared to the human being. By the age of two the horse has achieved 95% of its mature height and weight, and by the end of its third year it will be fully mature. To allow for this variation in maturity in the context of racing, it is necessary to express it as a function of the weight a horse will carry in a race. It is also necessary to take into account the race distance because stamina comes with maturity, and younger horses are at a greater disadvantage the further they have to run. If no allowance was made, a mature older horse would always beat a younger one.

The principle of WFA was developed by Admiral Rous, a handicapper with the English Jockey Club. Rous experimented with weights until he arrived at a relationship between age and maturity, expressed in terms of weight. His original scale has undergone only minor alterations since his work in the 1860s.


Contents

Top WFA races

Australia

France

Ireland

Japan

New Zealand

South Africa

United Kingdom

United States

References

Australian Rules of Racing - Weight for Age Scale - see AR.104

U.S. Scale of Weights from about.com


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Food and Nutrition. A Dictionary of Food and Nutrition. Copyright © 1995, 2003, 2005 by A. E. Bender and D. A. Bender. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Weight for Age" Read more