Ohira Y, Ito A, Ikawa S
J Appl Physiol Respir Environ Exerc Physiol. 1977 May;42(5):744-5. doi: 10.1152/jappl.1977.42.5.744.
Three healthy males performed an intense isotonic handgrip ergometer exercise to exhaustion (approximately 10 min). Serum water, serum total protein (STP), and hematocrit were determined in the venous blood taken from the brachial veins in both exercised and nonexercised arms before exercise and 10 s, 1, 2, and 3 min after the termination of exercise. Although no sweat was observed, hemoconcentration occurred in both arms. The peak degree of water loss in the nonexercised arm, however, was delayed and lower than that in the exercised arm. Further, three healthy males were exposed to a sauna (76 degrees C) for 20 min to test the effect of sweating on hemoconcentration in the absence of physical movement. Venous blood was withdrawn from the forearm vein before the sauna, after 5 min in the sauna, and at 3 and 30 min during sitting recovery period. No hemoconcentration was observed during the course of the experiment.
三名健康男性进行了高强度等张握力计运动直至力竭（约10分钟）。在运动前以及运动结束后10秒、1分钟、2分钟和3分钟，从运动手臂和未运动手臂的肱静脉采集静脉血，测定血清水分、血清总蛋白（STP）和血细胞比容。尽管未观察到出汗，但双臂均出现血液浓缩。然而，未运动手臂的失水峰值程度延迟且低于运动手臂。此外，三名健康男性在桑拿房（76摄氏度）中暴露20分钟，以测试在无身体运动情况下出汗对血液浓缩的影响。在桑拿前、桑拿5分钟后以及坐姿恢复期的3分钟和30分钟时，从前臂静脉抽取静脉血。在实验过程中未观察到血液浓缩。
