空勤与地勤人员硒代谢平衡的研究

• 作 者: 郭天程 王效民 吕社民 王治伦
• 机 构: 解放军第四五一医院,西安医科大学
• 出 处: 解放军预防医学杂志
• 发表日期: 1999年01期
• 关键词: 地勤人员 硒摄入量 代谢平衡 硒平衡 全血硒 空勤组 营养素摄入量 空勤人员 排泄量 飞行部队 存留量

目的：为了解空勤与地勤人员的硒摄入、吸收和排泄量，以及硒代谢的差异，进一步做好空勤与地勤人员的营养保障。方法：用双盘法在３ｄ自由进食条件下对３６名空勤人员进行了硒代谢平衡的研究，并以３６名地勤人员作为对照。结果：空勤组的硒摄入量（５９．８５μｇ·ｄ１）、尿硒排泄量（３０．８４μｇ·ｄ１）、表观吸收量（３９．２７μｇ·ｄ１）和全血硒（９８．９１ｎｇ·ｍｌ１）均高于地勤组（４５．９６μｇ·ｄ１，１８．４７μｇ·ｄ１，２７．５０μｇ·ｄ１，６６．４７ｎｇ·ｍｌ１）；与地勤组一样，空勤组尿硒排泄量、表观吸收量和硒存留量与硒摄入量呈显著正相关；两组均呈现硒正平衡；每日理论需硒量空勤人员为４９μｇ，地勤人员３２μｇ。结论：硒摄入量空勤组稍高于推荐值５０～２００μｇ·ｄ１的下限水平，地勤组稍低于此值，空、地勤人员硒状态有明显的不同。

OBJECTIVE: To understand the differences in selenium intake, absorption and excretion, and selenium metabolism among aircrews and ground crew, to further improve the nutrition support for aircrew and ground crew. METHODS: Thirty-six aircrews were studied for their balance of selenium metabolism using a double-disc method in a three-day free-to-eat trial. 36 ground crew members were used as controls. Results: The aircrew selenium intake (59.85μg · d-1), urinary selenium excretion (30.84μg · d-1), the apparent absorption (39.27μg · d-1) and whole blood selenium (98.91ng · ml1) were higher than that of the ground floor group (45.96μg · d1,18.47μg · d1,27.50μg · d1,66.47ng · ml1) In the same way, the urinary selenium excretion, apparent absorption and selenium retention in aircrew group were positively correlated with selenium intake; the selenium positive balance was found in both groups; the daily theoretical amount of selenium aerosurgery was 49μg, the ground crew 32μg . CONCLUSIONS: Selenium intake was slightly higher than the lower limit of the recommended value of 50-200 μg · d-1 in the ground crew, and the ground handling group slightly below this value. The selenium status of air and ground crew were significantly different.