Journal article

Publication year: 2001

Pages: 42-46

Journal: Pferdeheilkunde

Volume number: 17

Issue number: 1

ISSN: 0177-7726

Open access status: Bronze

DOI Link: https://doi.org/10.21836/PEM20010105

Publisher: Hippiatrik

Abstract: 

The predictability of the blood lactate concentration in horses after exercise with speed guided by the indices of the lactate-running speed relation V-2.5 and v(4) was examined in six thoroughbred horses. Horses were submitted to a total of six different types of exercise: 5, 15 or 25 minutes' duration at their individual v(2.5) or v(4). Each exercise type was run by a horse 11 times within a conditioning period of three weeks. All workouts were performed on a treadmill. The speed of exercise was determined with a multiple step exercise test before each conditioning period. The multiple step exercise test consisted of several steps of five minutes duration each with one minute rest between steps to take blood samples. The speed in the first step was 6.0 m/s, and each consecutive step speed was increased by 0.5 m/s. Slope of treadmill was set at 6 %. A test was discontinued when blood lactate concentration of a horse was above 4 mmol/l. Immediately after finishing an exercise bout blood was taken for lactate analysis. The median values of the blood lactate concentration after exercise at v(2.5) for 5, 15 and 25 minutes were 1.43 mmol/l, 2.15 mmol/l and 4.60 mmol/l respectively. After exercise at v(4) for 5, 15 and 25 minutes it was 1.70 mmol/l, 3.10 mmol/l and 5.33 mmol/l respectively.

To evaluate the predictability of blood lactate concentration after exercise the difference was calculated between the measured and the expected values. The median of the difference between measured and expected lactate concentration was for exercise at V-2.5 for 5, 15 and 25 minutes - 1.08 mmol/l, - 0.35 mmol/l and 2.10 mmol/l respectively, for exercise at v(4) for 5, 15 and 25 minutes it was - 2.30 mmol/l, -0.90 mmol/l und 1.33 mmol/l respectively.

Therefore, the predictability of blood lactate concentration in horses after exercise was better when they were submitted to exercise for 15 minutes compared to exercise of 5 minutes or 25 minutes duration.

Harvard Citation style: Sobotta, M., Lindner, A. and Sasse, H. (2001) Predictability of blood lactate concentration after exercise in horses working at speeds that were guided by results of an exercise stress test. Part 1: Lactate guided speed, Pferdeheilkunde, 17(1), pp. 42-46. https://doi.org/10.21836/PEM20010105

APA Citation style: Sobotta, M., Lindner, A., & Sasse, H. (2001). Predictability of blood lactate concentration after exercise in horses working at speeds that were guided by results of an exercise stress test. Part 1: Lactate guided speed. Pferdeheilkunde. 17(1), 42-46. https://doi.org/10.21836/PEM20010105