Department of Veterinary Sciences, University of Messina, Polo University Annunziata, Messina, Italy.
Department of Biomedical, Dental, Morphological and Functional Images, Specializing in Sports and Exercise Medicine, University of Messina, Messina, Italy.
J Equine Vet Sci. 2020 Nov;94:103251. doi: 10.1016/j.jevs.2020.103251. Epub 2020 Sep 12.
The aim of this study was to assess whether acid-base profile exhibits changes in regularly trained show jumping horses undergoing increasing exercise workloads. Seven female Italian saddle horses were subjected to three different physical exercise trials of increasing workload identified as three exercise phases (EPs). During EP horses were subjected to a standardized exercise test consisting of 15 minutes of treadmill, during EP horses were subjected to a show jumping test (height, 0.9-1.1 m; course length, 300 m), during EP horses underwent two jumping sessions carried out over two consecutive days. Blood samples were collected at rest (T), after exercise (T), and 30 minutes after the end of exercise (T). The values of pH, partial pressure of carbon dioxide (Pco), partial pressure of oxygen (Po), bicarbonate level (HCO), hemoglobin (Hb), and hematocrit (Hct) were measured. A significant effect of exercise workload and time (P < .001) on Po, Pco, HCO, Hb, and Hct values was found. The variation in the studied parameters resulted mostly reversible within T in horses when subjected to EP and EP, whereas Po, Hb, and Hct remained higher at T than T in horses when subjected to the second day of jumping section (EP) indicating a failure to recover. The results suggest that jumping sessions carried out over two consecutive days represent extra workload for horses, and this should be taken into account by veterinarian to prevent acid-base imbalance and for the maintenance of health and performance in equine athletes.
本研究旨在评估在逐渐增加运动负荷的常规训练的盛装舞步马中，酸碱状况是否会发生变化。 7 匹雌性意大利马鞍马接受了三种不同的运动负荷试验，分别确定为三个运动阶段（EP）。在 EP 期间，马进行了 15 分钟的跑步机运动，在 EP 期间，马进行了盛装舞步测试（高度为 0.9-1.1 m；赛道长度为 300 m），在 EP 期间，马进行了两个跳跃测试在连续两天进行。在休息时（T）、运动后（T）和运动结束后 30 分钟（T）采集血液样本。测量 pH 值、二氧化碳分压（Pco）、氧分压（Po）、碳酸氢盐水平（HCO）、血红蛋白（Hb）和红细胞压积（Hct）的值。发现运动负荷和时间（P <.001）对 Po、Pco、HCO、Hb 和 Hct 值有显著影响。当马进行 EP 和 EP 时，研究参数的变化在 T 内大多是可逆的，而当马进行第二天的跳跃部分（EP）时，Po、Hb 和 Hct 在 T 时仍高于 T，表明无法恢复。结果表明，连续两天进行的跳跃训练对马来说是额外的负荷，兽医应考虑到这一点，以防止酸碱失衡，并维持赛马运动员的健康和表现。
