篮球运动对医学生血清睾酮、皮质醇的影响报告   总被引：1，自引：0，他引：1  

郑瑜  连志明 《河北体育学院学报》2000,(4)

以本校 2 8名医学生为实验对象进行观察 ,探索篮球运动对血清激素的影响。结果证实 :坚持进行篮球运动可以提高医学生的睾酮及T/C之比值 ,减少皮质醇水平 ,有利能量物质合成。  相似文献   

牛蒡甙对训练大鼠运动能力、睾酮和皮质醇影响的实验研究   总被引：2，自引：0，他引：2  

宋丽  胡炜 《吉林体育学院学报》2008,24(5)

探讨牛蒡子的提取物牛蒡甙对训练大鼠运动能力的影响,以SD雄性大鼠为实验对象,将实验对象分为安静对照组、训练对照组、运动服药组进行对照比较,测试3个组在力竭运动时运动能力、血睾酮含量和血液皮质醇含量的变化。实验结果显示：牛蒡甙可以显著延长大鼠跑台运动力竭时间;大强度训练可以引起血睾酮含量下降和血液皮质醇含量升高,牛蒡甙可以使训练大鼠血睾酮含量显著性增加和血液皮质醇含量显著下降。结论认为,牛蒡甙可以延长大鼠跑台至力竭时间,具有抗疲劳作用;其抗疲劳作用可能与其升高血睾酮和降低血液皮质醇的水平有关。  相似文献   

运动性血睾酮降低过程中大鼠组织形态变化的观察   总被引：2，自引：0，他引：2  

严翊  谢敏豪 《北京体育大学学报》2008,31(2):187-189

在大鼠以5%体重的负重的进行间歇游泳训练五周(TA组)(游泳5 min-休息1分钟,6组/日,6次/周)后,停训一周(TC组),继续训练一周:负荷不变(TD组)、负荷量加倍(5%体重的负重,2组/日,TE组)或强度增加(6%体重的负重,1组/日,TF组),观察各组大鼠心、肝、肾等脏器组织形态学的变化,并与同龄血睾酮正常的不训练大鼠(Sc组)或以5%体重的负重的进行间歇游泳训练一周大鼠(TG组)进行比较.结果显示随着训练时间、训练负荷和训练强度的增加,大鼠血睾酮降低的程度加剧,伴随有重要脏器的病理性变化的运动性血睾酮降低,应属病理性的变化.  相似文献   

Right–left digit ratio (2D:4D) predicts free testosterone levels associated with a physical challenge     

Liam Kilduff  Christian J. Cook  Mark Bennett  Blair Crewther  Richard Michael Bracken  John Manning 《Journal of sports sciences》2013,31(6):677-683

Abstract

There is evidence that the digit ratio (2D:4D) is a negative correlate of prenatal levels of testosterone, but there is no association between 2D:4D and the circulating levels of both total and free testosterone. Sports provide a physical challenge and participants often show increased levels of free testosterone immediately preceding and during competition. We tested this hypothesis of a link between 2D:4D and testosterone under challenge in 79 professional rugby players using the following procedures; (i) 25 players were physically challenged using a repeated sprint agility test, and saliva samples were assayed for testosterone immediately preceding the repeated sprint agility test (time 1) and 5 minutes (time 2) and 20 minutes after completion of the repeated sprint ability (time 3); (ii) 54 players were also tested for salivary testosterone in an unchallenged condition. We found that right-left 2D:4D was significantly and negatively related to testosterone concentrations at times 1, 2 and 3 following the repeated sprint agility test (P < 0.05) and there was no association between the 2D:4D and basal testosterone levels in the unchallenged group. We suggest that low right–left 2D:4D is a predictive marker of free testosterone responsiveness when trained men are physically challenged, and that this association is programmed by the action of prenatal testosterone.  相似文献   

Salivary cortisol and testosterone responses to high-intensity cycling before and after an 11-day intensified training period     

John Hough  Robert Corney  Antonios Kouris  Michael Gleeson 《Journal of sports sciences》2013,31(14):1614-1623

Abstract

This study examined salivary cortisol and testosterone responses to two, different high-intensity, ～30-min cycles separated by 2 h rest before and after an 11-day intensified training period. Twelve recreationally active, healthy males completed the study. Saliva samples were collected before, immediately after and 30 min after both bouts with salivary cortisol and testosterone concentrations assessed. Compared with pre-training blunted exercise-induced salivary cortisol, testosterone and cortisol/testosterone responses to both bouts post-training were observed (P < 0.05 for all). Comparing pre- with post-training the absolute exercise-induced salivary cortisol, testosterone and cortisol/testosterone decreased from 11.1 to 3.1 and 7.0 to 4.4 nmol · L^?1 (cortisol), from 407 to 258 and from 473 to 274 pmol · L^?1 (testosterone) and from 12 to 4 and 7 to 5 (cortisol/testosterone) for the first and second bouts, respectively (P < 0.05). No differences in the pre- and post-training rating of perceived exertion (RPE) and heart rate (HR) responses during the cycles or times to fatigue were found (P > 0.05). Fatigue and Burnout scores were higher post- compared with pre-training (P < 0.05).

These high-intensity exercise bouts can detect altered hormonal responses following intensified training. This test could assess an athlete's current hormonal status, reductions in salivary cortisol and testosterone responses suggestive of increased fatigue.  相似文献   

Stress hormonal analysis in elite soccer players during a season     

《运动与健康科学(英文)》2014,3(4):279-283

PurposeThe purpose of this study was to evaluate the changes in some hormonal parameters (cortisol, testosterone, ratio of testosterone/cortisol (T/C)) in professional soccer players during a season.MethodsFifteen professional players from a soccer club of the first division of the Greek soccer league participated. All sport medical examinations were conducted four times: before the re-building period, post re-building period, mid-season, and after finishing the competition phase.ResultsFor testosterone, significant differences were observed between the end season and post re-building period (11.6%; p < 0.05) and mid-season (12.1%; p < 0.05). The cortisol concentration increased at mid-season by approximately 23%, and this change differed significantly from all other measurements for this hormone. The T/C ratio increased at the post re-building period and decreased at the middle of the season.ConclusionThese hormones and their ratios could be used as stress and recovery state indicators. Coaches can use these parameters in combination with other indicators to optimize workloads, and to avoid overreaching and overtraining.  相似文献   

刺蒺藜的药理及在运动中的应用研究     

武桂新 《吉林体育学院学报》2011,27(3):1-3

分析评价基于刺蒺藜提取物的运动营养品的合理使用。方法：检索体育科学杂志主要的数据库中国知网、Springer、Ovid、LWW、Elsever,研究分析刺蒺藜提取物的药理研究和在运动员人体应用效果、应用方法及对运动能力的影响研究进展。结果：刺蒺藜皂苷的生殖药理和生殖内分泌药理的研究,使刺蒺藜提取物成为运动营养品市场上调节运动内分泌功能的主流营养补充品,具有促进运动员人体睾酮分泌的潜在作用。由于人体自身的内分泌调节作用和运动对运动员机体内分泌调节的影响,蒺藜提取物对动物或人体生殖内分泌的影响研究并不十分充分,其作用程度也较易受到机体整体状态的影响。结论：刺蒺藜提取物对调节运动员内分泌的效果目前还不确定,进一步规范市场上产品的质量标准有助于更好地研究观察刺蒺藜提取物对运动员身体机能和运动能力的作用效果。  相似文献   

绝经后高知妇女肌肉力量练习指标的筛选     

马新东  赖柳明 《北京体育大学学报》2007,30(4):498-500,506

对于面临着肌肉萎缩和骨质疏松的老年人而言,更缺乏科学有效的力量评定标准和运动处方.解决这方面的问题,首先应从与运动器官衰老相关指标的测试分析入手.上述指标主要包括肌力、骨密度、激素及体成分等四大类指标.对这些指标的相关分析处理结果,不但能初步提示我们运动器官衰老的某些机制,也能为老年人选择运动方式提供指导,并为建立老年人肌力评定指标体系奠定基础.  相似文献   

锌与睾酮对力竭性游泳大鼠骨骼肌的影响   总被引：3，自引：0，他引：3  

艾华  陈吉棣  吴玉珍  陈志民  刘晓鹏 《体育科学》1997,(2)

动态观察了缺锌和缺锌后补锌以及补充睾酮对大鼠力竭性游泳前后骨骼肌的影响。结果显示,缺锌引起大鼠体重、体长、尾长、趾长伸肌重量、肌四头肌深层肌总RNA含量的明显降低。缺锌影响骨骼肌的代谢速率,阻碍力竭性游泳后骨骼肌总蛋白和总RNA含量的升高,并引起骨骼肌F肌动蛋白的下降,G-肌动蛋白的异常升高。补充睾酮,对缺锌造成的影响无改善作用。缺锌大鼠经过补锌,上述各项指标能恢复或基本恢复。实验还表明,缺锌可影响运动后骨骼肌的恢复。锌缺乏时骨骼肌合成代谢受阻,与睾酮的减少没有关系。  相似文献   

补充谷氨酰胺对激流回旋运动员血清T／C值、血尿素的影响   总被引：2，自引：0，他引：2  

陈建明 《体育科学研究》2009,13(2):67-69

观察补充谷氨酰胺（Glutamine，Gin）对10名优秀激流回旋运动员血清T／C值、血尿素变化的影响，采用对比实验的方法探讨谷氨酰胺调节机体蛋白质代谢的作用机制。实验表明：谷氨酰胺能明显抑制运动性低血睾发生，使T／C值维持在相对高的水平，谷氨酰胺对血尿素变化没有显著影响。研究认为：适量补充谷氨酰胺能够通过影响T／C值，有利于机体蛋白质的合成代谢，对于保持人体在长时间、大运动量训练时良好的机能状态，延缓疲劳发生有积极的生物学作用。  相似文献