• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Human Responses to Cold After Repeated Immersion in 20 Deg. C Water
【24h】

Human Responses to Cold After Repeated Immersion in 20 Deg. C Water

机译：人体对20度重复浸泡后的感冒反应。 C水

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The relative importance of core vs. skin temperature reduction as a stimulus forcold acclimation (CA), was assessed by evaluating thermoregulatory responses during cold air exposure (90 min, 5 deg C; CAE), cold water immersion (60 min, 20 deg C; CWI), and cold finger immersion (30 min, 4 deg C; CFI), before and after CA. Subjects acclimated for five weeks by completing daily 1-h water immersions (20 deg C) while either seated quietly (RG) or performing leg exercise (EG). The exercise intensity for EG was selected to prevent core temperature from falling during each CA session. CFI was completed immediately following CWI (hypothermic condition, HC); and a second trial on a separate day (normothermic condition, NC). Cold induced vasodilation (CIVD) was not affected by CA, but CIVD was blunted (P less O.05) during HC, compared to NC before and after CA. A more pronounced change in NE (P less O.05) occurred during CAE following CA, consistent with increased sympathetic activation, which could mediate changes in vasomotor response to cold The reduction of core temperature during CA sessions appears to be a necessary stimulus for this acclimation effect. This study also suggests that heat debt, not increased heat flux alone, is the stimulus for developing cold acclimation.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号