Application of the optical-sensor for human circulation and nervous system related to environmental and exercise adaptabilities

光学传感器在与环境和运动适应性相关的人体循环和神经系统中的应用

基本信息

批准号：
16207019
负责人：
KAWABATA Takashi
金额：
$ 16.97万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

Dehydration is known to affect thermoregulatory response and exercise performance. The maintenance of blood volume (BV) is an important factor for providing circulatory stability, thermoregulatory and maintaining performance during exercise. The fact that the BV associates with thermoregulatory responses and contributes to inhibition of hyperthermia in exercise has been reported by previous studies ([Convertino (1983)] ; [Fortney et al. (1988)] ; [Mack et al. (1994)]). It has been well known that Hypovolemia induced by thermal dehydration and progressive pooling of blood in cutaneous blood vessels in response to heat stress reduces the central circulating blood volume. Under these conditions cutaneous vasoconstriction leads to excessive heat storage in hot environment. Increases in sweat rate and skin blood flow during exercise in hot environment enhance heat dissipation and prevent hyperthermia. Hyperthermia itself has been suggested to limit aerobic performance ([Nielsen et al. (1993)]). Heat, exercise, mental stress or postural change, etc. as environmental factors in which the circulation dynamics is greatly changed were known well. Then, the small size and portable data logger the 14 hours continuous, high-speed sampling by 2.56kHz measurement was possible with optical-sensors, to analyze human adaptability was developed in this research. In addition, human adaptability to heat and exercise stress were examined by continuous and simultaneous measuring the skin blood flow and the pulse wave that was the index of the cardiovascular system with this device. As a result, the sympathetic nerve function was able to be evaluated from the measurement of the signal of the pulse wave included in the signal of skin blood flow, and human adaptability was able to be analyzed.

已知脱水会影响温度调节反应和运动性能。血液体积（BV）的维持是提供循环稳定性，调节性调节性和保持性能的重要因素。先前的研究报道了BV与体温调节反应相关并有助于抑制体育疾病的事实（[convertino（1983）]； [Fortney等人（1988）]； [Mack等人（1994）]）。众所周知，由于热应激而导致的热脱水和皮肤血管中血液逐渐聚集而诱发的低血容量会减少中心循环的血容量。在这些情况下，皮肤血管收缩会导致热环境中过量的热量储存。在热环境中运动过程中汗液率和皮肤血流的增加可增强热量耗散并预防热疗。已经提出了高温本身来限制有氧性能（[Nielsen等人（1993）]）。热，运动，精神压力或姿势变化等。因为循环动力学的环境因素很大变化。然后，通过光学传感器可以通过2.56kHz测量进行14小时连续的高速抽样14小时，以分析这项研究中的人类适应性。此外，通过连续和同时测量皮肤血流，以及使用该设备的心血管系统指数的脉冲波，检查了人类对热和运动压力的适应性。结果，可以通过测量皮肤血流信号中的脉搏波信号来评估交感神经功能，并且能够分析人类的适应性。