Relationship of plasma lactate production to cortisol release following completion of different types of sporting events in horses
- 1 January 1996
- journal article
- research article
- Published by Springer Science and Business Media LLC in Veterinary Research Communications
- Vol. 20 (4), 371-379
- https://doi.org/10.1007/bf00366544
Abstract
Fifty-eight healthy horses were studied during five sporting events of various intensities and durations, namely show-jumping (n=6), cross-country in a three-day event (n=30), trotting races (n=7), galloping reces (n=7) and endurance rides (n=8). Venous blood samples were collected at rest and immediately after exercise and analysed for plasma cortisol (CORT) and lactate (LA) levels. The experimental procedure was the same throughout the investigation so as to permit a reliable comparison between the five types of exercise. The type of event significantly affected both the resting (p≤0.05) and the postexercise (p≤0.01) plasma CORT. The degree of exercise-induced hypercortisolaemia was related to both the intensity and the duration of exercise for all five sporting events, but the endurance ride induced the most and show-jumping the least serious post-exercise CORT changes. LA production was much more closely related to the intensity of the exercise than was CORT. It is concluded that simultaneous measurements of plasma CORT and LA levels may be useful to discriminate between different types of exercise, adjust training programmes, and improve our comprehension of the physiology of sport horses at exercise.Keywords
This publication has 23 references indexed in Scilit:
- Effects of Training on Adreno-cortical Function and Red-cell volume in Trotters1Zentralblatt für Veterinärmedizin Reihe A, 2010
- Effect of show jumping on heart rate, blood lactate and other plasma biochemical valuesEquine Veterinary Journal, 1990
- Blood chemistry and skeletal muscle metabolic responses during and after different speeds and durations of trottingEquine Veterinary Journal, 1989
- The effects of high intensity exercise on the plasma concentration of lactate, potassium and other electrolytesEquine Veterinary Journal, 1988
- Cortisol concentrations in blood and urine of horsesAustralian Veterinary Journal, 1988
- Haematology of the racing Thoroughbred in Australia 1: Reference values and the effect of excitementEquine Veterinary Journal, 1983
- Changes in plasma biochemistry in horses competing in a 160 km endurance rideAustralian Veterinary Journal, 1983
- Hormonal changes associated with long distance exerciseEquine Veterinary Journal, 1981
- Alterations in plasma corticosteroids, insulin and selected metabolites in horses used in endurance ridesEquine Veterinary Journal, 1980
- THE USE OF ELECTROCARDIOGRAPHY IN THE DIAGNOSIS OF POOR RACING PERFORMANCE IN THE HORSEAustralian Veterinary Journal, 1978