4名潜水员在高压舱内进行了氦-氧饱和潜水实验。潜水深度为350m,巡回潜水深度为374m。潜水员随意摄食及饮水并食用强化维生素食品。加压后蛋白质、脂肪摄入量减少,减压开始食物摄入量逐渐下降,但能量与蛋白质等摄入量能满足消耗需要。加压前及减至常压后,潜水员的体重、体脂、上臂肌围、血清中总蛋白、白蛋白、游离氨基酸、总胆固醇、甘油三酯、高密度脂蛋白、低密度脂蛋白、极低密度脂蛋白、钙、镁、铁、铜、锌等含量皆无显著性差异,在高压条件下尿氮排出量逐渐下降,而占摄入氮的比例有增加的趋势。高压暴露后血清钠含量增加,血清钾含量减少,但皆在正常范围内。24小时尿中矿物质排出量除钾排出量逐渐减少外,未见有明显的变化。维生素负荷实验4小时尿中各维生素平均排出量均为正常水平。但在高压环境中,有受试者曾出现4-吡哆酸,核黄素排出量为不足水平,硫胺素排出量为不足水平边缘。在增加了维生素供给量后,4人维生素排出量皆为正常或充裕水平。4名潜水员在加压前、后皆无营养缺乏体征。以上结果表明,在350米氦-氧模拟饱和潜水期间,潜水员营养状况良好,营养保障是成功的。 Four divers conducted helium-oxygen saturation diving experiments in the hyperbaric chamber. Diving depth of 350m, diving tour depth of 374m. Divers are free to eat and drink water and eat fortified vitamin foods. Pressurized protein, reduced fat intake, reduced pressure began to gradually reduce the amount of food intake, but energy and protein intake to meet consumption needs. Body weight, body fat, upper arm muscle circumference, total serum protein, albumin, free amino acids, total cholesterol, triglycerides, HDL, LDL, Low density lipoprotein, calcium, magnesium, iron, copper, zinc and other content were not significantly different, under high pressure urine nitrogen emissions decreased gradually, while the proportion of nitrogen intake increased. After high-pressure exposure serum sodium increased serum potassium decreased, but all within the normal range. 24-hour urinary mineral output in addition to the gradual reduction of potassium emissions, no significant changes have been seen. Vitamin load experiment 4 hours urine in the average vitamins excretion were normal levels. However, in the high-pressure environment, 4-pyridoxine appeared in the subjects, the deficient levels of riboflavin were released, and the thiamine output was less than the marginal level. After increasing the supply of vitamins, 4 vitamins are all normal or adequate levels of discharge. Four divers in the pressure before and after no signs of lack of nutrition. The above results show that the divers are in good nutritional status and nutrition support is successful during the 350-meter Helium-Oxygen Simulated Saturation Diving.