Ozkaya Y G, Agar A, Hacioglu G, Yargiçoglu P, Abidin I, Senturk U K
Akdeniz University, Faculty of Medicine, Department of Physiology, Arapsuyu, Turkey.
Int J Sports Med. 2003 Jul;24(5):359-62. doi: 10.1055/s-2003-40699.
The purpose of this study was to investigate the effect of mild chronic exercise on visual evoked potentials (VEPs). Twenty male Wistar rats were randomly divided into two groups: Control (C) and Exercise (E) groups. Exercise was performed on a motor-driven treadmill for 8 weeks. After 5 min of exercise, plasma lactic acid levels were determined. At the end of the experimental period, VEPs were recorded from E group twice: Five min (E-5 min) and 24 h (E-24 h) after the last bout of exercise. During visual evoked potential (VEP) recordings body temperature of the animals was kept constant to eliminate the effect of temperature changes. No difference was found between the lactic acid levels of two groups. The mean latencies of VEPs from E-5 min were shortened compared with the control group. The mean latencies of VEP components in E-24 h were observed to have returned to the control levels. Peak to peak amplitudes of VEPs were found to be unaltered among all measurements. We concluded that immediately after exercise, VEPs latencies were shortened independently from body temperature via unknown mechanisms. The latencies of VEPs were returned to control values after 24 h.
本研究的目的是调查轻度慢性运动对视觉诱发电位（VEP）的影响。将20只雄性Wistar大鼠随机分为两组：对照组（C）和运动组（E）。在电动跑步机上进行8周的运动。运动5分钟后，测定血浆乳酸水平。在实验期结束时，对运动组在最后一次运动后5分钟（E - 5分钟）和24小时（E - 24小时）记录两次视觉诱发电位。在视觉诱发电位（VEP）记录期间，动物的体温保持恒定，以消除温度变化的影响。两组的乳酸水平没有差异。与对照组相比，E - 5分钟时视觉诱发电位的平均潜伏期缩短。观察到E - 24小时时VEP成分的平均潜伏期已恢复到对照水平。在所有测量中，视觉诱发电位的峰峰值幅度未发生改变。我们得出结论，运动后立即出现视觉诱发电位潜伏期缩短，其机制未知，且与体温无关。24小时后，视觉诱发电位的潜伏期恢复到对照值。
