红外疗法主要使用红外线的热效应和非热效应来改善人体的生理功能和病理状态。具体原则如下： 热效应原理 分子振动热产生 红外线是一个无形的光，在微波和可见光之间具有频率。人体组织中的各种分子（例如蛋白质，核酸，脂肪等）将在红外射线的照射下振动。由于红外光子的能量可以被这些分子吸收，因此分子的动能增加，进而导致分子振动加剧。这种振动会产生热量，就像我们在摩擦双手时感到热一样。 加速血液循环 当局部组织的温度升高时，会发生一系列生理反应。首先，温度的升高会导致血管扩张，尤其是毛细血管。这就像加热水管并导致其膨胀和变稠。血管扩张后，对血流的抵抗力降低，血流速度增加。 增强新陈代谢 同时，代谢废物的排放也更加顺畅，这有助于维持细胞内环境的稳定性。对于某些慢性炎症部位，增强的新陈代谢可以促进炎症的消失和组织的修复。 Enhanced metabolism As blood circulation accelerates, cell metabolism is also enhanced. Cells can obtain more sufficient oxygen and nutrients, and their metabolic activities are more active. For example, with sufficient oxygen supply, the mitochondria in the cell can perform aerobic respiration more efficiently and produce more energy (ATP) for various physiological functions of the cell. At the same time, the discharge of metabolic waste is also smoother, which helps to maintain the stability of the intracellular environment. For some chronic inflammatory sites, enhanced metabolism can promote the disappearance of inflammation and the repair of tissues.
