Kowalik S, Kedzierski W
Department of Biochemistry and Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12, 20-033 Lublin, Poland.
Pol J Vet Sci. 2011;14(3):373-8. doi: 10.2478/v10181-011-0056-1.
The effect of interval vs. continuous exercise on plasma leptin and ghrelin concentration in young Standardbred horses was studied. The experiment was conducted on 27 trotters, in the age between 2 and 3 years. They were divided into two groups according to the type of exercise. Blood samples were collected through jugular venipuncture in the following experimental conditions: at rest, immediately after exercise and 30 minutes after the end of the effort. Plasma leptin and ghrelin concentrations were determined using RIA tests. The continuous exercise induced an increase in plasma leptin concentration whereas the interval type of exercise did not influence the level of this hormone (3.47 +/- 0.78 vs. 4.07 +/- 0.94 and 2.31 +/- 0.15 vs. 2.36 +/- 0.21 ng/mL, respectively). The plasma ghrelin concentration measured after the continuous exercise, significantly increased (720 +/- 27.4 vs. 814 +/- 13.8; p < or = 0.05) whereas concentration of this hormone assessed after the interval exercise, significantly dropped (982 +/- 56.5 vs. 842 +/- 35.6 pg/mL; p < or = 0.05). The changes in plasma ghrelin concentration measured after the end of the effort correlated inversely with blood lactic acid concentration. In conclusion, the obtained results showed that medium-intensive type of exercise, such as trot, interval or continuous, slightly affected plasma leptin level but significantly affected plasma ghrelin concentration in young Standardbred trotters.
研究了间歇运动与持续运动对年轻标准赛马血浆瘦素和胃饥饿素浓度的影响。实验选取了27匹2至3岁的快步马进行。根据运动类型将它们分为两组。在以下实验条件下通过颈静脉穿刺采集血样：休息时、运动后即刻以及运动结束后30分钟。使用放射免疫分析测试法测定血浆瘦素和胃饥饿素浓度。持续运动导致血浆瘦素浓度升高，而间歇运动类型对该激素水平没有影响（分别为3.47±0.78与4.07±0.94以及2.31±0.15与2.36±0.21纳克/毫升）。持续运动后测得的血浆胃饥饿素浓度显著升高（720±27.4与814±13.8；p≤0.05），而间歇运动后评估的该激素浓度显著下降（982±56.5与842±35.6皮克/毫升；p≤0.05）。运动结束后测得的血浆胃饥饿素浓度变化与血乳酸浓度呈负相关。总之，所得结果表明，中等强度的运动类型，如快步走、间歇运动或持续运动，对年轻标准赛马的血浆瘦素水平影响较小，但对血浆胃饥饿素浓度影响显著。
