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

本研究通过光、热、重力胁迫下的生理反应来考察其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暖白色光有利于昼夜节律的调节，抑制夜猫子的发生。2)冬季缺乏体育锻炼和长期使用暖气导致基础代谢率降低和对冷热的耐受力降低。3)夜间型倾向于感到头晕，并且具有较低的立位耐力，心脏对重力应激的反应增加。

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.