Effect of night and shift work on glucose tolerance-circadian rhythm of glucose tolerance and insulin resistance

本研究的目的是探讨夜间和倒班工作对糖耐量和血脂等代谢综合征标志物的影响。33名工厂男性工人接受了调查。在每个班次之后、白天、晚上和午夜进行采样。糖化血红蛋白、糖白蛋白、1，5-脱水甘油三个班次间平均血糖水平无显著差异。结论：1.夜班和夜班的空腹胰岛素和HOMA-R显著高于日班。与白班相比，夜班和夜班的甘油三酯水平有升高的趋势，但低密度脂蛋白和游离脂肪酸水平白班高于夜班和夜班。夜班和晚班的血压明显高于日班。夜班和夜班的红细胞计数、红细胞压积、血红蛋白和血小板计数均显著高于日班。总能量摄入量在白班、夜班和夜班之间无差异。然而，一些食物的摄入量，如蘑菇、土豆、大豆加工食品和绿色蔬菜，夜间和晚班的摄入量往往低于白班。夜班和晚班的能耗低于白班。

The aims of this study were to investigate the influences of night and shift work on the markers of metabolic syndrome, such as glucose tolerance, and serum lipids. Thirty-three male factory workers were investigated. The sampling were carried out after each shift, daytime, evening and midnight.1. There were not any significant differences in the parameters of mean blood glucose level during several weeks, such as HbAlc, glycoalbumin, 1,5-anhydroglycitol among three shifts. The fasting insulin and HOMA-R of night and evening shifts were significantly higher than those of daytime shift.2. The level of triglyceride tended to be higher at night shift and evening shifts compared with daytime shift, but LDL-cholesterol and free fatty acid were higher at daytime shift compared with night and evening shifts.3. The blood pressure at night and evening shifts were significantly higher than those at daytime shift.4. The red blood cell counts, hematcrit, hemoglobin and platelet count at night and evening shifts were significantly higher than those of daytime shift.5. Total energy intake was not different among daytime shift, evening shift and night shift. However, intake of some foods, such as mushroom, potatoes, processed foods of soybean and green vegetables tend to be lower at night and evening shifts compared with daytime shift.6. The energy consumption at night and evening shifts were lower than that at daytime shift.