运动训练对优秀女子中长跑运动员铁代谢的影响   总被引：1，自引：0，他引：1  

宋刚  包呼格吉乐图 《中国体育科技》2009,45(4)

目的:探究女子中长跑运动员铁代谢的变化规律;方法:动态测定2个月训练内蒙古女子中长跑运动员的血红蛋白、血清铁、铁蛋白、转铁蛋白、转铁蛋白受体含量、红细胞分布宽度和促红细胞生成素水平;结果:优秀女子中长跑运动员训练期血红蛋白含量先下降后上升;血清铁含量具有先下降后上升趋势,但不显著;铁蛋白含量未见明显改变;转铁蛋白含量先升后降;转铁蛋白受体含量在训练中变化不明显;血红细胞分布宽度先升高后下降,EPO水平先升后降;结论:在训练初期,由于运动训练,机体铁代谢出现紊乱,而后通过调整恢复正常.  相似文献   

艾灸对武术运动员血睾酮的影响     

李兆伟  龚惠萍 《湖北体育科技》2009,28(4):413-414

目的：探讨艾灸疗法对武术运动员血睾酮的影响。方法：选取广东省高校武术高水平运动队30名运动员进行试验研究,通过检测研究对象血睾酮和RPE评分值的变化进行男女试验组和对照组比较。结果：男、女艾灸组实验后的血睾酮浓度较实验前均有明显上升（P〈0.05）,与对照组相比有统计学意义（P〈0.05）;男、女艾灸组实验后的RPE评分值与实验前相比均有明显下降（P〈0.05）,与对照组相比有统计学意义（P〈0.05,P〈0.01）。结论：艾灸疗法对男、女运动员的血睾酮均有显著影响。  相似文献   

冶金物料中铁的测定     

王家蓉 《承德职业学院学报》2005,10(4):78-79

本文系统地研究了Fe3 与I-定量反应的条件,共存离子的干扰及消除方法.结果表明,利用本法可不经分离直接测定大部分冶金物料中的高含量铁.  相似文献   

手工电弧焊立焊在BZ-Q混合型煤气发生炉碎渣圈中的应用     

王世春 《安徽职业技术学院学报》2005,4(4):15-17

BZ-Q混合型煤气发生炉碎渣圈是煤气发生炉碎渣重要设备,由灰口铸铁铸成.由于铸造工艺、力学性能及工作环境等原因,容易产生裂纹.一旦发生裂纹,漏气漏水,必须停炉维修.采用手工电弧焊热焊法立焊技术,不需拆卸、装吊,现场一次性焊好,方便、经济、快捷.  相似文献   

A comparison of haemolytic responses in fore-foot and rear-foot distance runners     

Stuart Caulfield  Kirsty A. McDonald  Brian Dawson  Sarah M. Stearne  Ben A. Green  Jonas Rubenson 《Journal of sports sciences》2016,34(15):1485-1490

This study examined the haemolytic effects of an interval-based running task in fore-foot and rear-foot striking runners. Nineteen male distance runners (10 fore-foot, 9 rear-foot) completed 8 × 3 min repeats at 90% vVO_2peak on a motorised treadmill. Pre- and post-exercise venous blood samples were analysed for serum haptoglobin to quantify the haemolytic response to running. Vertical ground reaction forces were also captured via a force plate beneath the treadmill belt. Haptoglobin levels were significantly decreased following exercise (P = 0.001) in both groups (but not between groups), suggesting that the running task created a haemolytic stress. The ground reaction force data showed strong effect sizes for a greater peak force (d = 1.20) and impulse (d = 1.37) in fore-foot runners, and a greater rate of force development (d = 2.74) in rear-foot runners. The lack of difference in haptoglobin response between groups may be explained by the trend for fore-foot runners to experience greater peak force and impulse during the stance phase of their running gait, potentially negating any impact of the greater rate of force development occurring from the rear-foot runners’ heel strike. Neither type of runner (fore-foot or rear-foot) appears more susceptible to technique-related foot-strike haemolysis.  相似文献   

The effects of short-term jump training on bone metabolism in females using oral contraceptives     

Jamie Reiger 《Journal of sports sciences》2016,34(3):259-266

The purpose of this study was to determine the effect of oral contraceptive use on bone serum markers following a 3-week jumping protocol. Twenty-three females (18–25 years) were grouped as oral contraceptive users (OC+) or non-users (OC?). Following a 3-week observation period, participants completed a 3-week (15-day) jump protocol. Jump sessions consisting of ten 42 cm drop jumps with a 30 s rest interval between jumps were completed each day, 5 days per week. Peak vertical ground reaction force and loading rate were measured and the osteogenic index was calculated. Serum markers for bone formation, bone alkaline phosphatase (BAP) and bone resorption, C-terminal telopeptides of type I collagen (CTX) were measured at three time points (pre-, mid-, post-jump). BAP and CTX increased significantly (P = 0.0017, 0.0488) in both groups post-jump; however, bone metabolic markers were not different between the OC+ and OC? groups. Osteogenic index, ground reaction force and vertical jump height were similar between groups. Correlations between markers of bone metabolism and participants’ age at menarche, weight, loading rate and years on OC were not significant. A 3-week jumping protocol was found to be effective in stimulating bone metabolism in both OC+ and OC? groups.  相似文献   

Fe-C体系相图之研究     

孙有社  赵长伟  孙素环  陈振峰 《洛阳师范学院学报》2002,21(2):55-57

准确清晰的金属相图在教学、理论研究和生产中具有重要的意义 .然而 ,现行的某些教科书中的Fe C相图以及对它的描述却存在着诸多问题 .作者经过实验研究 ,结合多年的实践经验 ,提出了一个新的比较符合实际的Fe C相图 .  相似文献   

美国在法德和解中的作用     

解红丽 《株洲师范高等专科学校学报》2005,10(3):62-64

法德两国一直被人们视为推动欧洲一体化的轴心。法德轴心的形成同美国的调节和促进分不开。美国从全球战略及自身利益出发，一开始就支持欧洲一体化的过程。调节法德矛盾，促进法德和解，重新武装德国，支持德国经济复兴等是美国支持欧洲早期一体化的主要内容。  相似文献   

电机铁芯卷绕制造技术中的成型模设计     

杨六顺 《泰州职业技术学院学报》2005,5(6):16-17

在电机铁芯卷绕制造技术中,成型模技术是关键,带状冲料经弯曲机构弯曲后的卷绕、压紧成型、焊接固定和成品的尺寸精度保证都在成型模上完成.根据电机铁芯卷绕制造技术的工艺要求,介绍了一种操作方便、耐用的成型模的设计,并介绍其工作原理和设计要点.  相似文献   

Serum markers for early diagnosis of non-‘Q’ wave and ‘Q’ wave myocardial infarction     

Alka Singh  Sheila Uthappa  V. Govindaraju  T. Venkatesh 《Indian journal of clinical biochemistry : IJCB》2002,17(1):25-28

The present study conducted on twenty-five uncomplicated cases of acute myocardial infarction diagnosed by clinical and electrocardiographic findings indicated significantly increased level of cardiac Troponin-T and increased activities of the enzymes total creatine kinase, creatine kinase-MB, aspartate transaminase and lactate dehydrogenase as compared to the twenty-five healthy control subjects. The level of cardiac Troponin-T and the activities of the enzymes total creatine kinase, creatine kinase-MB, aspartate transaminase and lactate dehydrogenase was found to be higher in “Q” wave myocardial infarction patients as compared to the non-“Q” wave and the controls. Since cardiac Troponin-T has been shown to increase in unstable angina and renal failure without cardiac disease and creatine kinase-MB activity has been found to be normal in patients with unstable angina and increase very slightly in patients with renal failure, it was concluded that a combination of cardiac Troponin-T and creatine kinase-MB activity was sufficient for the early diagnosis of acute myocardial infarction.  相似文献