Kobayashi H, Sato M
Department of Physiological Anthropology, Kyushu University of Design Sciences.
Ann Physiol Anthropol. 1992 Jan;11(1):45-9. doi: 10.2114/ahs1983.11.45.
The present study was designed to examine the effects of illuminance and color temperature of room lighting. Four male students volunteered as subjects. Each of them performed a calculation task for 95 minutes under nine different lighting environments consisting of a combination of three levels of illuminance (320lx, 1000lx and 2000lx) and three levels of color temperature (3000 degrees K, 5000 degrees K and 7500 degrees K). Three types of fluorescent lamps were used as a light source to vary the color temperature. Blood pressure, critical flicker frequency (CFF) and accommodation time of eye movements were measured every 30 minutes during the task. The accommodation time was significantly influenced by the illuminance level and both the relaxation time and contraction time were prolonged under 2000lx. The diastolic blood pressure was significantly affected by the color temperature level and increased under 7500 degrees K. As for the CFF, the interaction between illuminance and color temperature was significant. These results mean that not only the illuminance but also color temperature produces physiological effects. The present study may be the first to recognize the effect of color temperature on the blood pressure.
本研究旨在考察室内照明的照度和色温的影响。四名男学生自愿作为受试者。他们每人在由三种照度水平（320勒克斯、1000勒克斯和2000勒克斯）和三种色温水平（3000开尔文、5000开尔文和7500开尔文）组合而成的九种不同照明环境下进行95分钟的计算任务。使用三种类型的荧光灯作为光源来改变色温。在任务期间，每30分钟测量一次血压、临界闪烁频率（CFF）和眼球运动的调节时间。调节时间受照度水平的显著影响，在2000勒克斯下放松时间和收缩时间均延长。舒张压受色温水平的显著影响，在7500开尔文下升高。至于CFF，照度和色温之间的相互作用显著。这些结果意味着不仅照度而且色温都会产生生理影响。本研究可能是首次认识到色温对血压的影响。
