RE营养剂对血清睾酮及运动能力的影响   总被引：3，自引：0，他引：3  

严政  缪爱琴  戴秀霞  朱晓梅  邵慧秋  曹佩江 《体育与科学》2001,22(2):50-53

以游泳小鼠、普通大学生及运动员为研究对象,研究了RE营养剂对睾酮及运动能力的影响.结果表明:RE大、小剂量组小鼠血清睾酮值均比时照组有显著意义提高(P＜0.05).小鼠3%负荷游泳力竭实验:RE小剂量组游泳时间较对照组有显著意义延长(P＜0.05).小鼠6%负荷游泳力竭实验:RE小剂量组游泳时间较对照组有比较显著意义延长.普通大学生服用RE胶囊后血清睾酮水平有显著提高(P＜0.05),男子举重运动员服用RE胶囊后血清睾酮水平有显著提高(P＜0.05).男子自行车运动员服用RE胶囊,冬训和夏训后血清睾酮水平均有升高,但夏训后更显著(P＜0.05).主要结论:服用RE营养剂小鼠和运动员血清睾酮水平显著提高,运动能力也显著增强,小剂量组较大剂量组作用明显,因此应用时应采取适宜剂量.  相似文献   

Salivary hormones and anxiety in winners and losers of an international judo competition     

Elena Papacosta  George P. Nassis  Michael Gleeson 《Journal of sports sciences》2016,34(13):1281-1287

The purpose of this study was to investigate the responses of salivary hormones and salivary secretory immunoglobulin A (SIgA) and anxiety in winners and losers during an international judo competition. Twenty-three trained, male, national-level judo athletes provided three saliva samples during a competition day: morning, in anticipation of competition after an overnight fast, mid-competition, and post-competition within 15 min post-fight for determination of salivary cortisol, salivary testosterone, salivary testosterone/cortisol ratio, SIgA absolute concentrations, SIgA secretion rate and saliva flow rate. The competitive state anxiety inventory questionnaire was completed by the athletes (n = 12) after the first saliva collection for determination of somatic anxiety, cognitive anxiety and self-confidence. Winners were considered 1-3 ranking place (n = 12) and losers (n = 11) below third place in each weight category. Winners presented higher anticipatory salivary cortisol concentrations (p = 0.03) and a lower mid-competition salivary testosterone/cortisol ratio (p = 0.003) compared with losers with no differences for salivary testosterone. Winners tended to have higher SIgA secretion rates (p = 0.07) and higher saliva flow rates (p = 0.009) at mid-competition. Higher levels of cognitive anxiety (p = 0.02) were observed in the winners, without differences according to the outcome in somatic anxiety and self-confidence. The results suggest that winners experienced higher levels of physiological arousal and better psychological preparedness in the morning, and as the competition progressed, the winners were able to control their stress response better.  相似文献   

Low energy availability in exercising men is associated with reduced leptin and insulin but not with changes in other metabolic hormones     

Karsten Koehler  Neele R. Hoerner  Jenna C. Gibbs  Christoph Zinner  Hans Braun  Mary Jane De Souza 《Journal of sports sciences》2016,34(20):1921-1929

Low energy availability, defined as low caloric intake relative to exercise energy expenditure, has been linked to endocrine alterations frequently observed in chronically energy-deficient exercising women. Our goal was to determine the endocrine effects of low energy availability in exercising men. Six exercising men (VO_2peak: 49.3 ± 2.4 ml · kg^?1 · min^?1) underwent two conditions of low energy availability (15 kcal · kg^?1 fat-free mass [FFM] · day^?1) and two energy-balanced conditions (40 kcal · kg^?1 FFM · day^?1) in randomised order. During one low energy availability and one balanced condition, participants exercised to expend 15 kcal · kg^?1 FFM · day^?1; no exercise was conducted during the other two conditions. Metabolic hormones were assessed before and after each 4-day period. Following both low energy availability conditions, leptin (?53% to ?56%) and insulin (?34% to ?38%) were reduced (P < 0.05). Reductions in leptin and insulin were independent of whether low energy availability was attained with or without exercise (P > 0.80). Low energy availability did not significantly impact ghrelin, triiodothyronine, testosterone and IGF-1 (all P > 0.05). The observed reductions in leptin and insulin were in the same magnitude as changes previously reported in sedentary women. Further research is needed to understand why other metabolic hormones are more robust against low energy availability in exercising men than those in sedentary and exercising women.  相似文献   

低强度抗阻运动中不同程度的血流限制对血清生长激素和睾酮分泌量的影响     

李卓倩  魏文哲  赵之光  孙科  高伟  肖卓威 《中国体育科技》2020,(4):38-43

目的近些年来,加压训练因其显著的增肌效果而受到关注。但是,不同程度的血流限制对生长激素、睾酮等与增肌效果密切相关的合成类激素的影响目前还没有明确的研究结果。为此,观察了普通人在4种不同血流限制压力条件下,训练前后血清生长激素、睾酮等激素的变化,为今后进行加压训练时选择适宜压力提供实验依据。方法以10名健康成年男性为实验对象,在不同日期的同一时间点,分别在上肢0 mmHg、下肢0 mmHg(对照组),上肢100 mmHg、下肢140 mmHg(低压组),上肢140 mmHg、下肢180 mmHg(中压组),上肢180 mmHg、下肢220 mmHg(高压组)4种压力条件下,进行4组30%1RM的深蹲、屈臂、伸臂运动。每组均要求尽力完成30次(如完不成则做到力竭为止)。在运动前后测量上肢围度,并取肘静脉血测量生长激素和睾酮。而在运动后第2 min测指血血乳酸浓度,并记录主观疲劳度。结果1)3个加压组完成的总负荷均显著低于对照组(P<0.05),高压组显著低于低压组和中压组(P<0.05),而后二者之间无显著差异。2)各组间运动后血乳酸无显著差异,但3个加压组上肢放松围变化幅度和主观疲劳度均显著高于对照组(P<0.001)。其中,高压组的放松围变化显著低于低压组和中压组,高压组的主观疲劳度显著高于低压组和中压组P<0.05),而后二者之间无显著差异。3)运动后,4组的生长激素均显著增加(P<0.001)。其中,3个加压组的变化幅度显著大于对照组(P<0.05),低压组和中压组显著高于高压组(P<0.05),而低压组和中压组之间无显著性差异。4)对照组(的血睾酮)在运动前后无显著变化,而3个加压组均显著上升(P<0.05),但相互间均无显著差异。结论在以普通健康成年人为研究对象的低强度抗阻加压运动中,上肢压力为100~140 mmHg,下肢压力为140~180 mmHg的血流限制条件下,肌肉肿胀效应更加显著,生长激素、血睾酮等与增肌效果密切相关的合成类激素指标显著增加,同时疲劳感相对较小。  相似文献   

男子大学生长跑运动员日常训练期的营养状况调查     

林剑峰 《湖北体育科技》2008,27(2):163-165

运用问卷调查法、以及实验室检测法，了解了男子大学生长跑运动员的营养知识水平，其日常训练期的营养素摄入水平，以及与营养摄入有关的血液的生化指标。结果显示，多数运动员的营养知识较为传统。在日常训练期，运动员体内的碳水化合物的摄入不足，维生素A摄入量低，且血清钙水平很低，血清铁与TIBC的含量正常，建议：通过营养强化，注意合理补充蛋白质、碳水化合物、维生素、钙，并且要定时地对其进行营养生化检测以帮助提高男子大学生运动员的营养水平。  相似文献   

长时间运动导致低血睾酮的可能机制及其干预手段   总被引：10，自引：0，他引：10  

王启荣  杨则宜 《西安体育学院学报》2005,22(1):78-82

许多研究证明,长时间高负荷的运动训练可导致机体产生多种病理或生理学变化,其中内分泌系统的紊乱,常常表现为运动性低血睾酮,是机体运动能力下降和疲劳消除延长的主要因素之一。如何迅速恢复体能和防治运动性低血睾酮的发生,越来越受到运动医学界的重视。  相似文献   

运动对男性生殖系统功能的影响及其变化机制   总被引：2，自引：0，他引：2  

罗兴华  廖八根 《广州体育学院学报》1999,(1)

近年来有关运动对男性生殖系统的影响引起较多关注。现有证据表明短时间急性运动可引起睾酮水平升高 ,但长时间急性运动可致睾酮下降 ;中小强度慢性运动通常对男性生殖系统无明显影响 ,而大强度慢性运动则可引起生殖系统轻度异常 ,包括静息睾酮下降、精液质量改变。此外本文对生殖系统变化的机制也进行了简要综述  相似文献   

Effects of strength and endurance exercise order on endocrine responses to concurrent training     

Thomas W. Jones  Glyn Howatson  Mark Russell 《European Journal of Sport Science》2017,17(3):326-334

The present study examined the effect of strength and endurance training order on the endocrine milieu associated with strength development and performance during concurrent training. A randomised, between-groups design was employed with 30 recreationally resistance-trained males completing one of four acute experimental training protocols; strength training (ST), strength followed by endurance training (ST-END), endurance followed by strength training (END-ST) or no training (CON). Blood samples were taken before each respective exercise protocol, immediately upon cessation of exercise, and 1?h post cessation of exercise. Blood samples were subsequently analysed for total testosterone, cortisol and lactate concentrations. Ability to maintain 80% 1RM during strength training was better in ST and ST-END than END-ST (both p?<?.05). Immediately following the respective exercise protocols all training interventions elicited significant increases in testosterone (p?<?.05). ST and END-ST resulted in greater increases in cortisol than ST-END (both p?<?.05). The testosterone:cortisol ratio was similar following the respective exercise protocols. Blood lactate concentrations post-training were greater following END-ST and ST than ST-END (both p?<?.05). Conducting endurance exercise prior to strength training resulted in impaired strength training performance. Blood cortisol and lactate concentrations were greater when endurance training was conducted prior to strength training than vice versa. As such, it may be suggested that conducting endurance prior to strength training may result in acute unfavourable responses to strength training when strength training is conducted with high loads.  相似文献   

Correlations of Insulin Resistance and Serum Testosterone Levels with LH:FSH Ratio and Oxidative Stress in Women with Functional Ovarian Hyperandrogenism     

S. Suresh  T. Vijayakumar 《Indian journal of clinical biochemistry : IJCB》2015,30(3):345-350

Functional ovarian hyperandrogenism (FOH) is a form of polycystic ovary syndrome (PCOS) characterized by elevated circulating levels of androgens derived from the ovary. Insulin resistance (IR) is the most common etiological factor in women with FOH. IR causes the generation of increased oxidative stress (OS) and diminished antioxidant status. OS is directly correlated with both IR and testosterone levels, which consequently contribute to endocrine and biochemical alterations in FOH women. In the current study, elevations in total testosterone, free testosterone and luteinizing hormone (LH) levels accompanied by a decrease in follicle stimulating hormone (FSH) level leading to higher LH:FSH ratio were the prominent endocrine changes observed in women with FOH. A significant increase in fasting blood levels of glucose and insulin, as well as an elevated IR were also seen in FOH women, as compared to their age matched controls. Women with FOH have higher pro-oxidant and lower anti-oxidant levels in blood than their age matched controls. In FOH women, elevations in LH:FSH ratio and OS are correlated more with hyperandrogenemia than with IR. Of the androgens, free rather than total testosterone has better positive correlations with elevated LH:FSH ratio and OS, and hence, the former is a better predictive marker for the development of biochemical PCOS in women with FOH.  相似文献   

复方中药对大鼠红细胞参数及促生成因子影响的研究     

张敏  刘洪珍 《吉林体育学院学报》2012,(5):77-80

通过动物实验对运动大鼠红细胞参数及影响因子EPO、T含量变化的研究,表明复方中药能够减缓运动训练造成的红细胞参数下降现象,血清中促红细胞生成素的含量运动服药组与其他各组存在显著性差异（P〈0.01）。可见,复方中药能在运动训练期间刺激血清中促红细胞生成素含量的增加,协调相对稳定的血睾酮量共同作用红细胞各参数的变化,进而改善机体血液载氧能力,为复方中药在消除疲劳、提高运动能力方面的应用提供科学依据。  相似文献