Study on the regional differences in the adaptability to the cold environment in the modern people

现代人寒冷环境适应能力的地域差异研究

• 批准号: 12554040
• 负责人: FUNATSU Michiko
• 金额: $ 3.58万
• 依托单位: FUKUOKA JOGAKUIN UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12554040/
• 关键词: Thermoregulation; Cross Adaptation; Cold Environment; Residential Area; Adaptability; Physical Training

We investigated the effects of the physical fitness on the thermoregulation during the cold exposure and the residential differences in using habits of the heater and in the clothes weight.1. The effects of the physical training on thermoregulation during the cold exposureThe ability of thermoregulation in the cold environments (10℃, 15℃) was improved by physical training which performed over 8 weeks. Although the rectal temperature showed the decrement of 0.2℃ before the physical training, it did not show such a decrement after physical training.2. The effects of the physical training on autonomic nerves system during the cold exposureThe results of the heart rate variability showed that the autonomic nerves system was affected and activated by the cold stress. A significant decline in the baroreflex sensitivity by the cold stress resulted from the vasoconstriction of the skin as one of the thermoregulation responses. So, these results suggested that the thermoregulation was bound up with the cardiovascular responses and the regulation of the autonomic nerves system.3. The relationship between the physical fitness and the peripheral vasomotor during whole body cold exposureThe correlation between the diameter of blood vessel (DBV) and skin temperature of the backhand was significant, so the measurement of DBV was useful in order to estimate individual's thermoregulation ability. Also there was seemed to trend of a relation between a variation of DBV and V_<O2>max. It was suggested an ability of vasoconstriction was improved by physical training.4. The residential differences in using habits of the heater and in the clothes weightThe results of the using time of the heater and the clothes weight in winter were different by residence area. So, we thought that it was necessary the considerations of residence and the body conditions of the adaptation to the cold.

本研究探讨了身体素质对冷暴露时体温调节的影响，以及在取暖器使用习惯和衣服重量上的住宅差异.体育锻炼对寒冷环境中体温调节的影响通过8周以上的体育锻炼，可以提高在寒冷环境（10℃、15℃）中的体温调节能力。运动前肛温下降0.2℃，运动后肛温下降幅度不大.运动训练对冷应激时植物神经系统的影响心率变异性的测定结果表明，冷应激对植物神经系统有影响，并使其激活。压力感受性反射敏感性的显着下降的冷应激导致的血管收缩的皮肤作为一个温度调节反应。提示体温调节与心血管反应和植物神经系统的调节密切相关.全身冷锻炼时身体素质与外周血管收缩的关系血管直径（DBV）与反手皮肤温度有显著相关性，因此DBV的测定可用于评价个体的体温调节能力。DBV的变化与V_（max）之间似有相关趋势<O2>。提示运动训练可提高血管收缩能力.冬季取暖器使用习惯和衣物重量的居民差异取暖器使用时间和衣物重量的结果因居住地区而异。因此，我们认为有必要考虑居住地和适应寒冷的身体条件。