Sweating responses and the muscle metaboreflex under mildly hyperthermic conditions in sprinters and distance runners
Sweating responses and the muscle metaboreflex under mildly hyperthermic conditions in sprinters and distance runners
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DOI：
10.1152/japplphysiol.00212.2011
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发表时间：
2011-08-01
影响因子：
3.3
通讯作者：
Kondo, Narihiko
中科院分区：
文献类型：
--
作者：
Amano, Tatsuro;Ichinose, Masashi;Kondo, Narihiko
Amano T，Ichinose M，Koga S，Inoue Y，Nishiyasu T，Kondo N。短跑运动员和长跑运动员在轻度高温条件下的出汗反应和肌肉代谢反射。 J Appl Physiol 111: 524-529, 2011。首次发表于 2011 年 6 月 9 日； doi:10.1152/japplphyol.00212.2011.-为了研究不同训练方法对肌肉代谢反射激活过程中非热出汗的影响，我们比较了耐力跑运动员、短跑运动员和未经训练的男子在轻度热疗（环境温度，35°C；相对湿度，50%）下运动后肌肉闭塞期间的出汗反应。 10 名耐力跑运动员、9 名短跑运动员和 10 名未经训练的男子（最大摄氧量：分别为 57.5 +/- 1.5、49.3 +/- 1.5 和 36.6 +/- 1.6 ml.kg(-1).min(-1)；P < 0.05）以 40% 最大自主收缩进行等长握力练习 2 分钟，然后施加压力对前臂施加 280 mmHg 的压力以阻断血液循环 2 分钟。短跑运动员在静息水平和闭塞水平之间的平均动脉血压变化显着高于未经训练的男性（分别为 32.2 +/- 4.4 和 17.3 +/- 2.6 mmHg；P < 0.05）；然而，长跑运动员和未经训练的男子之间没有观察到差异。长跑运动员在遮挡期间的 Delta 平均出汗率（前额、胸部、前臂和大腿的平均值）显着高于短跑运动员和未经训练的男性（分别为 0.38 +/- 0.07、0.19 +/- 0.03 和 0.11 +/- 0.04 mg.cm(-2).min(-1)；P < 0.05），并且在两组之间没有差异短跑运动员和未经训练的男子。我们的结果表明，训练方式的特异性会影响肌肉代谢反射激活过程中的出汗反应。此外，这些结果意味着肌肉代谢反射的更大激活不会导致短跑运动员更大的出汗反应。
Amano T, Ichinose M, Koga S, Inoue Y, Nishiyasu T, Kondo N. Sweating responses and the muscle metaboreflex under mildly hyperthermic conditions in sprinters and distance runners. J Appl Physiol 111: 524-529, 2011. First published June 9, 2011; doi:10.1152/japplphysiol.00212.2011.-To investigate the effects of different training methods on nonthermal sweating during activation of the muscle metaboreflex, we compared sweating responses during postexercise muscle occlusion in endurance runners, sprinters, and untrained men under mild hyperthermia (ambient temperature, 35 C; relative humidity, 50%). Ten endurance runners, nine sprinters, and ten untrained men (maximal oxygen uptakes: 57.5 +/- 1.5, 49.3 +/- 1.5, and 36.6 +/- 1.6 ml.kg(-1).min(-1), respectively; P < 0.05) performed an isometric handgrip exercise at 40% maximal voluntary contraction for 2 min, and then a pressure of 280 mmHg was applied to the forearm to occlude blood circulation for 2 min. The Delta change in mean arterial blood pressure between the resting level and the occlusion was significantly higher in sprinters than in untrained men (32.2 +/- 4.4 vs. 17.3 +/- 2.6 mmHg, respectively; P < 0.05); however, no difference was observed between distance runners and untrained men. The Delta mean sweating rate (averaged value of the forehead, chest, forearm, and thigh) during the occlusion was significantly higher in distance runners than in sprinters and untrained men (0.38 +/- 0.07, 0.19 +/- 0.03, and 0.11 +/- 0.04 mg.cm(-2).min(-1), respectively; P < 0.05) and did not differ between sprinters and untrained men. Our results suggest that the specificity of training modalities influences the sweating response during activation of the muscle metaboreflex. In addition, these results imply that a greater activation of the muscle metaboreflex does not cause a greater sweating response in sprinters.