VARIATIONS IN IRON STATUS WITH FATIGUE MODELED FROM TRAINING IN FEMALE DISTANCE RUNNERS
VARIATIONS IN IRON STATUS WITH FATIGUE MODELED FROM TRAINING IN FEMALE DISTANCE RUNNERS
复制标题
DOI：
10.1007/bf00426292
复制
发表时间：
1985-01-01
影响因子：
3
通讯作者：
HAMILTON, CL
中科院分区：
文献类型：
--
作者：
BANISTER, EW;HAMILTON, CL
血红蛋白水平低，甚至明显贫血在女性耐力跑者中很常见；目前对于补充铁的有效性存在争议。过去，对训练的描述不充分，并且在足够长的时间内对铁指数的测量太少，使得很难在铁状态和训练之间建立任何关系，以此作为合理铁疗法的基础。在这项研究中，对 5 名 18-25 岁的年轻女性长跑运动员进行了为期 300 天的研究。数字指数用于量化个人日常训练努力的程度，训练效果的概念模型可以定义随后的疲劳程度并进行计算。整个过程中定期测量红细胞数量和 Hb 浓度，并在最后 200 天期间测量血清 Fe、铁蛋白、总 Fe 结合能力和转铁蛋白饱和度百分比。在整个时期内，血清铁和转铁蛋白饱和度随训练和疲劳指数明显同相变化，而血清铁蛋白异相变化。在剧烈训练和伴有高度疲劳的情况下，补充铁的摄入量可能作用不大，因为此时转铁蛋白饱和度也非常高，无法有效促进膳食铁的吸收。
A low Hb level or even frank anemia is common among female endurance runners; controversy presently exists on the effectiveness of Fe supplementation. In the past inadequate descriptions of training and too infrequent measurement of Fe indices over a sufficiently long period, have made it difficult to establish any relationship between Fe status and training upon which to base a rational Fe therapy. In this study 5 young women distance runners age 18-25 yr were studied for 300 days. A numerical index was used to quantify the extent of an individual''s daily training effort and a conceptual model of the effect of training allowed definition of the extent of consequent fatigue, to be calculated. Red blood cell number and Hb concentration were measured regularly throughout, and during the last 200 days serum Fe, ferritin, total Fe binding capacity and percent transferrin saturation were also measured. Serum Fe and transferrin saturation evidently varied in phase with training and the fatigue index, throughout the peroid while serum ferritin varied out of phase. Supplementing Fe intake may be of little use during heavy training and concomitant high fatigue because transferrin saturation is also very high at this time and ineffective in promoting absorption of dietary Fe.