Effects of behavioral history on physiological polytypisms in a current living environment and its evaluation of adaptability

在这项研究中，通过对光照、温度和重力压力的生理反应来检验它们对当前生活环境的适应性。结果表明：1)早晨充足的光照和夜间选择温暖的白光有利于昼夜节律的调节，并抑制昼夜节律。2)冬季缺乏体育锻炼和长期取暖导致基础代谢率降低，耐寒性和耐热性降低。3)夜行型患者往往感觉头晕，立位耐力降低，心脏对重力应激的反应增强。

The adaptabilities to a current living environment were examined by physiological responses to lighting, thermal and gravitational stresses in this study. The results were as follows ; 1) enough light exposure in the morning and selecting warm white light at night were good for accommodation of circadian rhythms and inhibited to be nocturnal type. 2) lack of physical exercise and chronic use of heating in winter led to lower basal metabolic rate and lower cold and heat tolerances. 3) a nocturnal type tended to feel faint and also to have a lower orthostatic tolerance with increased cardiac response to gravitational stress.