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The effects of training on ventilation and blood gases in exercising Thoroughbreds
Roberts, C. A.; Marlin, D. J.; Lekeux, Pierre
1999In Equine Veterinary Journal, 30, p. 57-61
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Keywords :
horse; exercise; respiration; gas exchange
Abstract :
[en] The effects of training on ventilation and blood gases during exercise were investigated in 6 clinically normal, detrained Thoroughbred horses. They underwent a 16 week training programme similar to the type frequently used for Thoroughbred racehorses in Great Britain. Standardized treadmill exercise tests (2 min canter at 8 and 10 m/s C8 and C10[ and 2 min gallop at 12 m/s [G12], on a level surface) were performed prior to and after 16 weeks of training. Respiratory flow rates were measured using ultrasound flow transducers. Blood samples were drawn from a transverse facial artery and the right atrium. Minute ventilation, respiratory frequency and tidal volume were not significantly altered by training. Peak inspiratory flow rate was lower following training at 8 and 10 m/s, but not at 12 m/s. Arterial oxygen tension was decreased during trot and canter following training. Blood lactate concentration post G12 decreased following training (10.5 +/- 2.2 mmol/l vs. 7.7 +/- 2.2 mmol/l; P < 0.05). The increase in the degree of exercise-induced arterial hypoxaemia following training may reflect a lack of pulmonary adaptation to training in the face of improved cardiovascular and muscular function.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Roberts, C. A.;  Centre for Equine Studies, Animal Health Trust, Newmarket, Suffolk, UK
Marlin, D. J.
Lekeux, Pierre ;  Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie - Doyen de la Faculté de Médecine vétérinaire
Language :
English
Title :
The effects of training on ventilation and blood gases in exercising Thoroughbreds
Publication date :
1999
Journal title :
Equine Veterinary Journal
ISSN :
0425-1644
eISSN :
2042-3306
Publisher :
Equine Veterinary Journal Ltd, Newmarket Suffolk, United Kingdom
Volume :
30
Pages :
57-61
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 09 March 2012

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