Effects of a 30-km race upon salivary lactate correlation with blood lactate
Effects of a 30-km race upon salivary lactate correlation with blood lactate
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DOI：
10.1016/j.cbpb.2006.07.001
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发表时间：
2006-09-01
影响因子：
2.2
通讯作者：
Costa Rosa, L. F. B. P.
中科院分区：
文献类型：
--
作者：
Santos, R. V. T.;Almeida, A. L. R.;Costa Rosa, L. F. B. P.
血乳酸被用来测定有氧能力和长距离运动成绩。最近，有人提出了一种新的方法来取代有创的血乳酸技术。唾液乳酸因在递增负荷试验中与血乳酸高度相关而备受关注。我们评估了长跑过程中唾液和血乳酸之间的相关性，并评估了唾液乳酸浓度可能的变化。15名专业马拉松选手以最快的速度跑了30公里。采集L安静时和每隔6公里处的唾液和25亩血进行乳酸测定。血乳酸浓度在第6公里时升高，然后保持不变，直到比赛结束。18公里后唾液乳酸较基础值升高。我们发现血和唾液的绝对乳酸(r=0.772，p<；0.05)与经蛋白质校正的血乳酸相对浓度(r=0.718，p<；0.05)有很高的相关性。唾液乳酸的绝对和相对相关性最高，r=0.994(p<；0.001)。我们的结果表明，使用绝对值或相对蛋白质浓度的唾液乳酸是可能的。此外，在耐力项目中，唾液乳酸与血乳酸呈高度相关。(C)2006 Elsevier Inc.保留所有权利。
Blood lactate has been used to determine the aerobic capacity and long distance performance. Recently, a new methodology has been suggested to supplant the invasive blood lactate techniques. Salivary lactate has received attention because it shows high correlation to blood lactate in progressive overload test. We evaluated the correlation between salivary and blood lactate during a long distance run and assessed possible changes in salivary lactate concentration. Fifteen expert marathon racers ran 30 km as fast as possible. Saliva and 25 mu L of blood were collected at rest and at each 6 km for lactate determination. Blood lactate concentration increased in the 6th km and then remained constant until the end of the race. Salivary lactate increased after 18 km in relation to basal. We found high correlations between blood and saliva absolute lactate (r=0.772, p < 0.05) and the blood lactate relative concentration corrected by protein- (r=0.718, p < 0.05). The highest correlation found between absolute and relative salivary lactate was r=0.994 (p < 0.001). Our results show that it is possible to use salivary lactate with absolute values or relative protein concentration. In addition, salivary lactate showed a high correlation with blood lactate in endurance events. (c) 2006 Elsevier Inc. All rights reserved.