Characteristics of sweating responses and peripheral sweat gland function during passive heating in sprinters
Characteristics of sweating responses and peripheral sweat gland function during passive heating in sprinters
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DOI：
10.1007/s00421-013-2641-8
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发表时间：
2013-08-01
影响因子：
3
通讯作者：
Kondo, Narihiko
中科院分区：
文献类型：
--
作者：
Amano, Tatsuro;Koga, Shunsaku;Kondo, Narihiko
本研究的目的是比较几年训练的短跑运动员与未训练的受试者和训练的耐力跑者的出汗功能。进行了两个单独的实验。九名短跑选手，八名未经训练的男子，九名长跑选手（50.9 +/- A 1.4、38.2 +/- A 1.8和59.1 +/- A 1.2 mL/kg/min; P < 0.05）被动加热50 min（实验1），和10名短跑运动员，11名未经训练的男子和9名长跑运动员根据乙酰胆碱诱导的出汗率（SR）（实验2），评估各组（每组中与实验1相比相似的水平）的汗腺容量。在被动加热过程中，短跑运动员和未经训练的人的平均非光滑SR的斜率与平均体温的变化没有显著差异（分别为1.21 +/-A0.10和0.97 +/-A0.12 mg cm（-2）/min/A ℃）;相反，与未经训练的男性相比，长跑运动员表现出明显更大的斜率（1.42 +/- A 0.11 mg cm（-2）/min/A ℃，P < 0.05）。SR的平均体温阈值在各组之间没有显著差异。乙酰胆碱诱导的SR在短跑运动员和未经训练的男性之间没有显着差异，而长跑运动员与未经训练的男性相比，显示出显着较高的诱导SR。与未经训练的男性相比，每周训练5天，每天训练2-3小时，至少3年的短跑运动员的出汗功能没有改善，尽管短跑运动员的出汗功能明显更好。因此，有一种情况是，日常训练不足以改善短跑运动员相对于长跑运动员的出汗功能。
The purpose of this study was to compare sweating function in sprinters who have trained for several years with untrained subjects and trained endurance runners. Two separate experiments were conducted. Nine sprinters, eight untrained men, and nine distance runners ( 50.9 +/- A 1.4, 38.2 +/- A 1.8, and 59.1 +/- A 1.2 mL/kg/min, respectively; P < 0.05) were passively heated for 50 min (Experiment 1), and ten sprinters, 11 untrained men and nine distance runners (similar levels compared with Experiment 1 in each group) had their sweat gland capacity assessed based on acetylcholine-induced sweating rate (SR) (Experiment 2). The slope of the mean non-glabrous SR plotted against change in mean body temperature during passive heating did not differ significantly between sprinters and untrained men (1.21 +/- A 0.10 and 0.97 +/- A 0.12 mg cm(-2)/min/A degrees C, respectively); in contrast, compared with untrained men, distance runners exhibited a significantly greater slope (1.42 +/- A 0.11 mg cm(-2)/min/A degrees C, P < 0.05). The mean body temperature threshold for SR was not significantly different among the groups. Acetylcholine-induced SR did not differ significantly between sprinters and untrained men, whereas distance runners showed a significantly higher induced SR compared with untrained men. The sweating function was not improved in sprinters who have trained 2-3 h/day, 5 days/week, for at least 3 years compared with untrained men, although the was markedly greater in sprinters. Thus, there is a case that daily training was not sufficient to improve sweating function in sprinters relative to those in distance runners.