Calcium Homeostasis and intact plasma parathyroid hormone during exercise and training in young standardbred horses
Brief content of the article
The authors studied the hormonal regulation of calcium metabolism during exercise by evaluating the effects of exercise and training on calcium homeostasis and intact parathyroid hormone. Seven untrained Standardbred horses were studied, after being accustomised to a high speed tredmill, in a 6 week training programme with a standard exercise test (SET1) at the onset of the trainings program and a SET(2) at the end of the trainingsprogramme. The lactate-guided trainingsprogramme consisted of low-speed exercise (LSE) and high speed exercise (HSE) with days of rest between days of training. The authors wrote that this study revealed exercise related responses in calcium homeostasis by marked decreases in blood ionised Ca2+ and increases in intact plasma PTH during SET and HSE, whereas LSE had no effect on calcium homeostasis. In particular, the type of exercise influenced PTH response and therefore, high speed exercise may have a greater influence on bone metabolism, which should be taken into account when training concepts are developed for young racehorses.
Keywords :minerals; PTH; lactate ;exercise
Vervuert, I., Coenen, M., Wedemeyer, U., Chrobok, C., Harmeyer, J. and Sporleder, H.-P. 2002. Calcium Homeostasis and intact plasma parathyroid hormone during exercise and training in young standardbred horses. Equine Veterinary Journal 34: 713-718.
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