Stronach Research Unit for Complementary and Integrative Laser Medicine, Research Unit of Biomedical Engineering in Anesthesia and Intensive Care Medicine, and TCM Research Center Graz, Medical University of Graz, Auenbruggerplatz 29, 8036 Graz, Austria.
Evid Based Complement Alternat Med. 2013;2013:674183. doi: 10.1155/2013/674183. Epub 2013 Nov 28.
Changes of light intensity of different colors can shift many physiological parameters and conditions like melatonin, alertness, body temperature, heart rate (HR), and heart rate variability (HRV). The aim of this pilot study was to investigate acute temperature, HR, HRV, and state of mind reactivities after illumination with red (631 nm) and blue (456 nm) light (illuminance 140 lux for both). Seven healthy volunteers (5 females, 2 males; mean age ± SD 34.1 ± 11.9 years) were investigated at the Medical University of Graz, using new color light panels. Significant decreases were found only after 10 min blue light stimulation in nose temperature (P = 0.046), HR (P < 0.05), and total HRV (P = 0.029), in association with a significant alteration of the emotional state (stress level score, P = 0.006). However, red light stimulation of the same persons did not induce the same effects in these parameters. The effect of blue light as environmental stimulation on human health is not clarified in detail and needs further investigations.
不同颜色的光强变化可以改变许多生理参数和状态，如褪黑素、警觉性、体温、心率（HR）和心率变异性（HRV）。本初步研究的目的是调查红色（631nm）和蓝色（456nm）光照射（照度均为 140 勒克斯）后急性温度、HR、HRV 和心理状态反应。在格拉茨医科大学，使用新型彩色灯光面板对 7 名健康志愿者（5 名女性，2 名男性；平均年龄±标准差 34.1±11.9 岁）进行了调查。仅在 10 分钟的蓝光刺激后发现鼻温（P = 0.046）、HR（P < 0.05）和总 HRV（P = 0.029）显著降低，同时情绪状态明显改变（压力水平评分，P = 0.006）。然而，相同人员的红光刺激并未在这些参数中引起相同的效果。蓝光作为环境刺激对人类健康的影响尚未详细阐明，需要进一步研究。
