Lacticidemia y rendimiento deportivo en caballos pura raza chilena en competencia de rodeo

Abstract

Identificar moléculas que tengan la condición de predecir y/o monitorear el rendimiento atlético en diferentes razas y deportes, es un desafío permanente para quienes se dedican al entrenamiento deportivo de caballos. La información sobre concentración de lactato sérico e índices de rendimiento deportivo es escasa en caballos Pura Raza Chilena. El presente estudio tuvo como objetivo determinar la eventual correlación entre la concentración de lactato sérico como biomarcador de adaptación al ejercicio / eficiencia deportiva y el rendimiento atlético de caballos Pura Raza Chilena, en una competencia oficial de rodeo chileno. Se muestrearon la totalidad de los caballos (n=22) que participaron en la final de campeones de un rodeo chileno oficial, en 4 momentos del desarrollo de la competencia, y se midió la concentración de lactato en suero, usando un equipo manual Accutrend Plus® 2011 Roche Diagnostics (USA). Las lacticidemias variaron entre 2,8 ± 1,99 mmol/L (previo a la carrera); 9,88 ± 3,46 mmol/L (inmediatamente terminada la carrera), 4,98 ± 1,89 mmol/L (1 h de concluida la carrera); y 2,65 ± 1,21 mmol/L (2 h de concluida la carrera). Las lacticidemias de los caballos (colleras) que lograron los 3 primeros lugares fueron, en las cuatro mediciones, significativamente menores (p< 0,05) a que aquellos que estuvieron fuera de ese ranking, esto es 2,85 ± 2,6 y 6,60 ± 3,7 mmol/L, respectivamente. Se concluye que la lacticidemia puede ser un biomarcador asociado a la adaptación al ejercicio, traducido en eficiencia deportiva, en caballos chilenos en competencia de rodeo. ** Identifying molecules that have the ability to predict and/or monitor athletic performance in different breeds and sports is a permanent challenge for those dedicated to horse sports training. Information on serum lactate concentration and sporting performance indices is scarce in Purebred Chilean horses. The objective of the present study was to determine the eventual correlation between serum lactate concentration as a biomarker of adaptation to exercise/sports efficiency and the athletic performance of Purebred Chilean horses, in an official Chilean rodeo competition. All the horses (n=22) that participated in the champions final of an official Chilean rodeo were sampled, at 4 moments during the competition, and the serum lactate concentration was measured, using an Accutrend Plus manual equipment. ® 2011 Roche Diagnostics (USA). Lactic acidemia varied between 2.8 ± 1.99 mmol/L (pre-race); 9.88 ± 3.46 mmol/L (immediately finished the race); 4.98 ± 1.89 mmol/L (1 h after the race); and 2.65 ± 1.21 mmol/L (2 h after finishing the race. The lactic acidemia of the horses (colleras) that achieved the first 3 places were, in the four measurements, significantly lower (p< 0.05) than those who were outside that ranking, that is, 2.85 ± 2.6 and 6.60 ± 3.7 mmol/L, respectively. It is concluded that lacticidemia may be a biomarker associated with adaptation to exercise, translated into sporting efficiency, in Chilean horses in rodeo competition.

Identifying molecules that have the ability to predict and/or monitor athletic performance in different breeds and sports is a permanent challenge for those dedicated to horse sports training. Information on serum lactate concentration and sporting performance indices is scarce in Purebred Chilean horses. The objective of the present study was to determine the eventual correlation between serum lactate concentration as a biomarker of adaptation to exercise/sports efficiency and the athletic performance of Purebred Chilean horses, in an official Chilean rodeo competition. All the horses (n=22) that participated in the champions final of an official Chilean rodeo were sampled, at 4 moments during the competition, and the serum lactate concentration was measured, using an Accutrend Plus manual equipment. ® 2011 Roche Diagnostics (USA). Lactic acidemia varied between 2.8 ± 1.99 mmol/L (pre-race); 9.88 ± 3.46 mmol/L (immediately finished the race); 4.98 ± 1.89 mmol/L (1 h after the race); and 2.65 ± 1.21 mmol/L (2 h after finishing the race. The lactic acidemia of the horses (colleras) that achieved the first 3 places were, in the four measurements, significantly lower (p< 0.05) than those who were outside that ranking, that is, 2.85 ± 2.6 and 6.60 ± 3.7 mmol/L, respectively. It is concluded that lacticidemia may be a biomarker associated with adaptation to exercise, translated into sporting efficiency, in Chilean horses in rodeo competition.