Document Detail

Modern riding style improves horse racing times.
MedLine Citation:
PMID:  19608909     Owner:  NLM     Status:  MEDLINE    
When animals carry loads, there is a proportionate increase in metabolic cost, and in humans this increase in cost is reduced when the load is elastically coupled to the load bearer. Major horse race times and records improved by 5 to 7% around 1900 when jockeys adopted a crouched posture. We show that jockeys move to isolate themselves from the movement of their mount. This would be difficult or impossible with a seated or upright, straight-legged posture. This isolation means that the horse supports the jockey's body weight but does not have to move the jockey through each cyclical stride path. This posture requires substantial work by jockeys, who have near-maximum heart rates during racing.
Thilo Pfau; Andrew Spence; Sandra Starke; Marta Ferrari; Alan Wilson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  325     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2009 Jul 
Date Detail:
Created Date:  2009-07-17     Completed Date:  2009-07-29     Revised Date:  2009-08-14    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  289     Citation Subset:  IM    
Structure and Motion Laboratory, Royal Veterinary College, University of London, Hatfield, AL9 7TA UK.
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MeSH Terms
Body Weight
Energy Metabolism
Horses / physiology*
Physical Conditioning, Animal
Sports / physiology*
Grant Support
//Biotechnology and Biological Sciences Research Council
Comment In:
Science. 2009 Aug 14;325(5942):812   [PMID:  19679792 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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