15d-6°头低位卧床女性腰椎X线影像变化及防护效果  

Alteration of X-ray Images and Countermeasure Effects in Female Lumbar Spine during 15 d-6° Head-down Bed Rest

作　　者：王林杰[1] 张丽芬 窦跃龙 周湘杰 陈文娟[1] 袁敏[1] 赵琦[1] 刘书娟[1] 唐国华[1] 李莹辉[1] 白延强[1] 

机构地区：[1]中国航天员科研训练中心,航天医学基础与应用国家重点实验室,北京100094 [2]航天城门诊部,北京100094

出　　处：《航天医学与医学工程》2011年第4期265-268,共4页Space Medicine & Medical Engineering

基　　金：中国航天医学工程预先研究项目(2008SY5406001);载人航天领域第一批预先研究项目(010201)资助

摘　　要：目的研究下体负压/自行车功量计锻炼对15 d头低位卧床女性腰椎功能失调的防护作用。方法对22名女性志愿者分为对照组(CON,n=8)、下体负压锻炼组(LBNP,n=7)、下体负压联合自行车功量计锻炼组(LBNP+ERGO,n=7),在卧床前和卧床后第4天,采用X线对脊柱状态进行了检查。分别测量并比较卧床前后腰椎总长度,每节腰椎椎间隙长度及腰椎前凸曲度的变化。结果 LBNP组卧床后L5/S1腰椎椎间隙宽度增加;CON卧床后腰椎前凸曲度降低,ERGO+LBNP组卧床后腰椎前凸曲度增加。结论下体负压/自行车功量计锻炼可改善女性15 d头低位卧床引起的腰椎卸负荷变化。Objective To test the counteraction effects of low body negative pressure（LBNP）/ ergometer exercise on lumbar spine deconditioning of the female volunteers in 15 d head-down bed rest（HDBR）.Methods Twenty-two female volunteers were randomly divided into control group（CON,n=8）,LBNP group（LBNP,n=7） and LBNP＋ergometer group（LBNP＋ERGO,n=7）.They underwent X-rays assays before and 4 d after HDBR.The lumbar spine length,L1to L5 intravertebral space width and lumbar lordosis were measured and analyzed.Results LBNP caused the elongation of L5/S1 intervertebral space.Lumbar lordosis decreased after HDBR in control group,but increased in LBNP /ergometer group.Conclusion LBNP/ergometer exercises can modify the lumbar spine deconditioning associated with 15 d HDBR in women.

关 键 词：模拟失重 头低位卧床 腰椎 下体负压 自行车功量计锻炼 

分 类 号：R852.22[医药卫生—航空、航天与航海医学]