Graduate Program in Animal Science, School of Medicine and Life Sciences, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição 1155, Curitiba, Paraná, 80215901, Brazil.
Vet Res Commun. 2024 Jun;48(3):1935-1939. doi: 10.1007/s11259-024-10344-w. Epub 2024 Mar 12.
In the present study we aimed to investigate superficial skin temperature of racehorses' distal limbs after training in a racetrack. Male and female Thoroughbred racehorses were investigated in summer, after light training, and in the winter, after light and intense training. Horses were exercised (Exercise group, EG) under trainers' protocol while others were maintained inside their stalls (Control group, CG). Thermographic images were obtained from the front (fetlock, cannon, and carpus) and hindlimbs (fetlock, cannon, and tarsus), before exercise and 45, 60, 120 and 180 min after exercising. Images were analyzed using the Flir Tools® program. Temperatures of different moments of each group were compared using Anova for repeated measures and each moment of EG versus CG using Student t test. Horses of the CG maintained steady temperature in the winter, but in summer temperature increased at M45 until M180 (P < 0,01). EG increased temperatures after exercises that remained higher than M0 even at 180 min post-exercise (P < 0,0001), for most of the regions in winter and summer. EG temperatures were higher than CG at most of the time points after exercise. There was positive correlation between all regions' temperature and the atmospheric temperature for the CG during the summer (P = 0,003, r = 0,9622), observed for the front fetlock and carpal regions for the EG (P = 0.035, r = 0,8166). This pilot study demonstrates that, after race exercising under natural conditions skin temperature might take more than 180 min to return to basal values.
在本研究中，我们旨在研究赛马在赛道训练后四肢远端的皮肤表面温度。在夏季进行轻度训练后和冬季进行轻度和高强度训练后，对雄性和雌性纯种赛马进行了调查。马在训练师的协议下进行锻炼（锻炼组，EG），而其他马则在马厩内保持不动（对照组，CG）。在运动前和运动后 45、60、120 和 180 分钟，从正面（球节、前肢、腕关节）和后肢（球节、前肢、跗关节）获得热成像图像。使用 Flir Tools®程序分析图像。使用重复测量的方差分析比较每个组不同时间点的温度，并用 Student t 检验比较 EG 的每个时间点与 CG 的温度。CG 的马在冬季保持稳定的温度，但在夏季，M45 时刻的温度升高，直到 M180（P<0.01）。EG 在运动后增加了温度，这些温度甚至在运动后 180 分钟仍高于 M0（P<0.0001），在冬季和夏季的大多数区域都是如此。EG 的温度在运动后大多数时间点都高于 CG。在夏季，CG 的所有区域温度与大气温度之间存在正相关关系（P=0.003，r=0.9622），EG 的前球节和腕关节区域也存在这种关系（P=0.035，r=0.8166）。这项初步研究表明，在自然条件下进行比赛锻炼后，皮肤温度可能需要 180 多分钟才能恢复到基础值。
