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首页> 外文期刊>Industrial health >Effects of electromagnetic radiation (bright light, extremely low-frequency magnetic fields, infrared radiation) on the circadian rhythm of melatonin synthesis, rectal temperature, and heart rate.
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Effects of electromagnetic radiation (bright light, extremely low-frequency magnetic fields, infrared radiation) on the circadian rhythm of melatonin synthesis, rectal temperature, and heart rate.

机译：电磁辐射（明亮的光，极低频磁场，红外线辐射）对褪黑激素合成的昼夜节律，直肠温度和心率的影响。

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Electromagnetic spectra reduce melatonin production and delay the nadirs of rectal temperature and heart rate. Seven healthy men (16-22 yrs) completed 4 permuted sessions. The control session consisted of a 24-hours bedrest at < 30 lux, 18 degrees C, and < 50 dBA. In the experimental sessions, either light (1500 lux), magnetic field (16.7 Hz, 0.2 mT), or infrared radiation (65 degrees C) was applied from 5 pm to 1 am. Salivary melatonin level was determined hourly, rectal temperature and heart rate were continuously recorded. Melatonin synthesis was completely suppressed by light but resumed thereafter. The nadirs of rectal temperature and heart rate were delayed. The magnetic field had no effect. Infrared radiation elevated rectal temperature and heart rate. Only bright light affected the circadian rhythms of melatonin synthesis, rectal temperature, and heart rate, however, differently thus causing a dissociation, which might enhance the adverse effects of shiftwork in the long run.
机译：电磁频谱会减少褪黑激素的产生，并延迟直肠温度和心率的最低点。七名健康的男性（16-22岁）完成了4个排列整齐的练习。控制阶段包括24小时的<30 lux，18摄氏度和<50 dBA的卧床休息。在实验过程中，从下午5点到凌晨1点使用光（1500 lux），磁场（16.7 Hz，0.2 mT）或红外辐射（65摄氏度）。每小时测定一次唾液褪黑激素水平，连续记录直肠温度和心率。褪黑激素合成被光完全抑制，但此后恢复。直肠温度和心率的最低点被延迟。磁场没有影响。红外线辐射会升高直肠温度和心率。但是，只有明亮的光线会影响褪黑激素合成，昼夜节律和心律的昼夜节律，从而引起解离，从长远来看，这可能会增加轮班工作的不利影响。

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