• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physiological Anthropology >Relationship between maximum oxygen uptake and peripheral vasoconstriction in a cold environment
【24h】

Relationship between maximum oxygen uptake and peripheral vasoconstriction in a cold environment

机译：冷环境中最大氧吸收与外围血管收缩的关系

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

摘要

Various individual characteristics affect environmental adaptability of a human. The present study evaluates the relationship between physical fitness and peripheral vasoconstriction in a cold environment. Seven healthy male students (aged 22.0?years) participated in this study. Cold exposure tests consisted of supine rest for 60?min at 28?°C followed by 90?min at 10?°C. Rectal and skin temperatures at seven sites, oxygen consumption, and the diameter of a finger vein were measured during the experiment. Metabolic heat production, skin heat conductance, and the rate of vasoconstriction were calculated. Individual maximum oxygen consumption, a direct index of aerobic fitness, was measured on the day following the cold exposure test. Decreases in temperature of the hand negatively correlated with the changes in rectal temperature. Maximum oxygen consumption and the rate of vasoconstriction are positively correlated. Furthermore, pairs of the following three factors are also significantly correlated: rate of metabolic heat production, skin heat conductance, and the rate of vasoconstriction. The results of this study suggested that the capacity for peripheral vasoconstriction can be improved by physical exercise. Furthermore, when exposed to a cold environment, fitter individuals could maintain metabolic heat production at the resting metabolic level of a thermoneutral condition, as they correspondingly lost less heat.
机译：各种特征影响人类的环境适应性。本研究评估了冷环境中物理健康与外周血管收缩的关系。七名健康男学生（年龄22.0岁？年）参加了这项研究。冷曝光试验由仰卧静置为60Ω分钟，在28°C下，然后在10℃下进行90℃。在实验期间测量七个地点，氧气消耗和手指静脉直径的直肠和皮肤温度。计算了代谢热量，皮肤传热和血管收缩率。在冷曝光试验后的一天测量单个最大氧气消耗，直接的好氧健身指数。降低手的温度与直肠温度的变化负相关。最大氧气消耗和血管收缩的速率正相关。此外，以下三个因素对也显着相关：代谢热量，皮肤导热率和血管收缩率。该研究的结果表明，通过体育锻炼可以提高外周血管收缩的能力。此外，当暴露于寒冷的环境时，钳工个人可以在静息的热源条件的静止代谢水平处维持代谢热量，因为它们相应地失去了较少的热量。

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