摘要
为了研究大强度阶段训练期间优秀运动员体内必需微量元素铁、锌、铜、锰的动态变化规律 ,并探讨用无创性头发取样代替血样采集对运动员实施微量元素运动营养监控的可行性 ,以1 2名广东省优秀女子手球运动员为研究对象 ,受试者分别于夏训第 1天 ,第 7天和第 40天采取血浆 ,并同时于第 1天和第 40天采集头发 ,用原子吸收分光光度法测定头发和血浆中铁、锌、铜、锰含量。结果显示 :( 1 )夏训结束时 ,血浆Fe、Cu含量和Cu/Zn比值显著性降低 (P <0 0 5～0 0 0 1 ) ,血浆Mn显著性升高 (P <0 0 0 1 ) ,血浆Zn无差异。 ( 2 )血浆中各元素含量在整个夏训期间的变化速率不同。其中血浆Fe在夏训第 1周末即呈显著性下降 (P <0 0 0 1 ) ,显示出快速变化过程 ;而血浆Cu、血浆Cu/Zn比值的降低以及血浆Mn的升高表现为逐渐累积的缓慢变化过程 ,夏训结束才出现显著性差异 (P <0 0 5～ 0 0 0 1 )。 ( 3 )夏训结束时 ,发Fe、发Cu含量呈显著性降低 (P <0 0 5～ 0 0 0 1 ) ,但发Cu/Zn比值及发Zn含量无差异。提示 :( 1 )在大强度训练期间 ,可以考虑用发样取代血样进行微量元素铁、锌和铜的营养监控。 ( 2 )在大强度训练开始后 ,要及时对运动员进行微量元素铁和铜的补充。
Dynamic study on the content of 4 essential trace elements in both blood plasma and hair during different period of summer training was carried out.The aim was to provide an available and practical means by using haircut specimen instead of blood-drawn for monitoring athletes'element level and then to give scientific guidance for them to supplement trace elements in time.The content of Fe,Zn,Cu and Mn in plasma of 12 elite female handball athletes was determined respectively by AAS on the first,seventh and the fortieth day of their tough summer training.Meanwhile hair Fe,Zn and Cu content was also detected respectively at the beginning and the end of summer training.The results showed that:(1)At the end of summer training,plasma Fe,Cu content and Cu/Zn ratio decreased significantly( P <0 05～0 001)and plasma Mn content increased distinctly( P <0 001),but plasma Zn content made no significant difference.(2)There were different change rates for these four trace elements in plasma during the summer training.The significant change of plasma Fe( P <0 001)was a rapid process dramatically accomplished in the first week,while that of plasma Cu( P <0 001),Cu/Zn ratio ( P <0 05)and Mn( P <0 001)was a slow process graduallychanged through the whole training.(3)The content of both hair Fe and Cu made special significant decrease( P <0 05～0 001),but hair Cu/Zn ratio and hair Zn content had no significant difference.The results indicated that(1)It is considerable to use convenient haircut specimen instead of vein blood in monitoring Fe,Cu and Zn nutrition during tigh intensity training.(2)It is very necessary for athletes to supplement trace element Fe and Cu during tough training.
出处
《广东微量元素科学》
CAS
2003年第4期32-36,共5页
Trace Elements Science
关键词
大强度训练
微量元素
头发
血浆
high intensity training
trace element
hair
blood plasma
