Jastrzębski Z, Żychowska M, Konieczna A, Ratkowski W, Radzimiński Ł
Gdansk University of Physical Education and Sport, Poland.
Biol Sport. 2015 Sep;32(3):261-5. doi: 10.5604/20831862.1163372. Epub 2015 Jul 31.
The aim of this study was to analyse the acid-base balance and partial pressure of blood gases of participants during a 100-km run. Fourteen experienced amateur ultramarathon runners (age: 43.36±11.83 years; height: 175.29±6.98 cm; weight: 72.12±7.36 kg) completed the 100-km run. Blood samples were taken before the run; after 25, 50, 75, and 100 km; and 12 and 24 hours after the run. There were significant differences (p<0.05) between the mean values registered for acid-alkaline balance, buffering alkalies, and current bicarbonate in each segment of the run, especially during the third, fourth, and fifth segments of the run (i.e., between 50 and 100 km), and there were only significant differences associated with buffering alkalies and current bicarbonate during the recovery. However, all the changes were within the physiological norm. A significant decrease in the compressibility of oxygen was observed after 100 km (from 92.80±15.67 to 88.36±13.71 mmHg) and continued during the recovery to 75.06±8.60 mmHg 12 h after the run. Also there was a decrease in saturation to a mean value of 93.78±3.10 at 12 h after the run. Generally the amateurs runners are able to adjust their running speed so as not to provoke a significant acid-base imbalance or lactate acid accumulation.
本研究的目的是分析100公里跑期间参与者的酸碱平衡和血气分压。14名经验丰富的业余超级马拉松运动员（年龄：43.36±11.83岁；身高：175.29±6.98厘米；体重：72.12±7.36千克）完成了100公里跑。在跑步前、25公里、50公里、75公里和100公里后以及跑步后12小时和24小时采集血样。跑步各阶段记录的酸碱平衡、缓冲碱和实际碳酸氢盐的平均值之间存在显著差异（p<0.05），尤其是在跑步的第三、第四和第五阶段（即50至100公里之间），而在恢复过程中仅缓冲碱和实际碳酸氢盐存在显著差异。然而，所有变化均在生理正常范围内。100公里后观察到氧分压显著下降（从92.80±15.67降至88.36±13.71 mmHg），并在恢复过程中持续下降，跑步后12小时降至75.06±8.60 mmHg。跑步后12小时饱和度也降至平均值93.78±3.10。一般来说，业余跑步者能够调整他们的跑步速度，以免引发显著的酸碱失衡或乳酸堆积。
