摘要
目的探讨模拟失重对机体膳食摄入营养状况和血脂含量的影响。方法 1 8名被试者头低位 - 6°卧床 2 1d ,用膳食称量法观察其营养素摄入量变化 ,记录卧床第 1、1 1和 2 1天的血脂含量。结果三大热能基本满足生理需要 ,热量摄入在第 2周降低 ,第 3周后基本恢复正常 ;血脂无明显统计学变化。结论模拟失重对机体膳食摄入营养状况有短期影响 ,经过适应期后可恢复到正常范围 ,血脂不受影响。
Objective To observe the effects of simulated weightlessness on the nutritional state and contents of serum lipids in human. Method Eighteen healthy men were exposed to 21 d bed rest with -6° head down tilt (HDT -6°).Nutrients intake was calculated and the lipids levels were determined on the first,eleventh and twenty first day. Result Intake of the three main nutrients,carbohydrates,protein and fat met the physiological requirment essentially, but carbohydrates intake was significantly reduced in the second week.There were no significant differences among the lipid levels during different periods. Conclusion Simulated weightlessness may exert a short term and reversible influence on human nutritional intake except for lipids.
出处
《航天医学与医学工程》
CAS
CSCD
2000年第3期218-220,共3页
Space Medicine & Medical Engineering
关键词
失重模拟
血脂
营养素
热量摄入
weightlessness simulation
serum lipids
nutrients
