Sodium ion concentration vs. sweat rate relationship in humans
Sodium ion concentration vs. sweat rate relationship in humans
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DOI：
10.1152/japplphysiol.00015.2007
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发表时间：
2007-09-01
影响因子：
3.3
通讯作者：
Kolkhorst, Fred W.
中科院分区：
文献类型：
--
作者：
Buono, Michael J.;Ball, Kimberly D.;Kolkhorst, Fred W.
本研究旨在探讨主动热习服对人体汗液渗透压的影响，以及汗液钠离子浓度与出汗率的关系。八名健康的男性志愿者在高温下完成了为期10天的锻炼。热习服后平均运动心率和核心体温分别降低18次/分钟和0.6摄氏度(P<；0.05)。此外，汗液渗透压和汗液钠离子浓度与出汗率的关系右移。具体地说，关系的斜率不受热习服的影响。相反，热习服显著降低了出汗速率与汗液渗透压和汗钠截留量的关系，分别降低了28momoL/kgH(2)O和15 mmoL/L。因此，在热习服后，对于给定的出汗率，汗液钠离子浓度显著较低。这些结果表明，热习服增加了人汗腺对钠离子的重吸收能力。
The purpose of this study was to determine the effect of active heat acclimation on the sweat osmolality and sweat sodium ion concentration vs. sweat rate relationship in humans. Eight healthy male volunteers completed 10 days of exercise in the heat. The mean exercising heart rate and core temperature were significantly decreased (P < 0.05) by 18 beats/ min and 0.6 degrees C, respectively, following heat acclimation. Furthermore, sweat osmolality and the sweat sodium ion concentration vs. sweat rate relationships were shifted to the right. Specifically, the slopes of the relationships were not affected by heat acclimation. Rather, heat acclimation significantly reduced the y-intercepts of the sweat osmolality and sweat sodium relationships with sweat rate by 28 mosmol/ kgH(2)O and 15 mmol/ l, respectively. Thus there was a significantly lower sweat sodium ion concentration for a given sweat rate following heat acclimation. These results suggest that heat acclimation increases the sodium ion reabsorption capacity of the human eccrine sweat gland.