雄激素与运动关系的探索与研究     

贾清秀 《赣南师范学院学报》2007,28(3):97-99

从雄激素的生理机能、雄激素与兴奋剂的关系及雄激素与运动能力的关系等方面对雄激素与运动的关系作了综述.  相似文献   

Can changes in resistance exercise workload influence internal load,countermovement jump performance and the endocrine response?     

Daniel J Hiscock  Brian Dawson  Michael Clarke  Peter Peeling 《Journal of sports sciences》2018,36(2):191-197

This study examined the influence of differing volume load and intensity (%1 repetition maximum[%1RM]) resistance exercise workouts on session rating of perceived exertion (sRPE) countermovement jump (CMJ) performance and endocrine responses. Twelve participants performed a workout comprising four exercises (bench press, back squat, deadlift and prone bench pull) in randomised order as either power (POW); 3 sets × 6 repetitions at 45%1RM × 3 min inter-set rest, strength (ST); 3 sets × 3 repetitions at 90%1RM × 3 min inter-set rest, or hypertrophy (HYP); 3 sets × 10 repetitions at 70%1RM × 1 min inter-set rest in a randomised-crossover design. CMJ performance and endocrine responses were measured immediately pre-, post-, 12, 24, 48 and 72 h post-exercise. POW sRPE (3.0 ± 1.0) was lower than ST (4.5 ± 1.0) (P = 0.01), and both were lower than HYP (8.5 ± 1.0) (P = 0.01). Duration of CMJ decrement was longer (P ≤ 0.05) for HYP (72 h) compared to POW (12 h) and ST (24 h). Testosterone concentration was greater (P ≤ 0.05) immediately post-exercise in HYP compared to POW and ST. In conclusion, less inter-set rest, greater volume load and intensity (%1RM) may increase sRPE, duration of CMJ performance decrement and testosterone responses in resistance exercise.  相似文献   

运动能力及伏隔核一氧化氮合酶表达的影响     

于芳  崔建梅  刘鸿宇 《山西师大体育学院学报》2010,25(2):116-119

目的：观察中药雪芙蓉胶囊对雄性大鼠力竭游泳时间、血清雄激素水平及伏隔核神经元型一氧化氮合酶（nNOS）表达的影响。方法：将30只雄性成年大鼠随机分为3组,即安静对照组、游泳组、中药游泳组。中药游泳组每天灌服雪芙蓉胶囊（5mg/kg）,28天后测试大鼠力竭游泳时间,检测血清睾酮含量,用免疫组织化学结合图像半定量方法对nNOS神经元的数量、面积及灰度进行测量和分析。结果：与游泳组比较,中药游泳组大鼠的力竭游泳时间延长、血清睾酮增高（P〈0.01,P〈0.05）;nNOS免疫阳性细胞数量和阳性产物面积均减少（P〈0.01）,灰度没有显著差异（P〉0.05）。结论：中药雪芙蓉胶囊可提高大鼠的运动能力,延缓中枢疲劳,机理可能与雪芙蓉胶囊提高游泳大鼠血清睾酮水平,同时减少伏隔核nNOS的过度表达有关。  相似文献   

Effect of tapering period on plasma hormone concentrations,mood state,and performance of elite male cyclists     

《European Journal of Sport Science》2013,13(3):183-190

Abstract

In this study, we investigated the effect of 1- and 3-week tapering periods on concentrations of plasma testosterone (T), cortisol (C), T/C ratio, mood state, and performance in elite male cyclists. After 8 weeks of progressive training, cyclists were randomly assigned to a control group (n=12) who continued performing intense training for a further 3 weeks, or a taper group (n=12) who continued with a 50% reduction in training volume. Blood testosterone and cortisol concentrations were assayed and the T/C ratio calculated from analysis obtained via standard ELISA. Mood state was determined using the Profile of Mood States (POMS) questionnaire. All data were collected immediately after a 40-km time-trial performed before, during, and after the 8-week training protocol and after the 1- and 3-week tapering/training periods. In the taper group, 40-km time-trial time decreased significantly (P<0.01) and equally for both the 1- and 3-week taper periods relative to the control group. There were significant elevations in T/C ratio (P<0.001) and reductions in cortisol concentrations and POMS scores in the taper group relative to the control groups at the end of both the 1- and 3-week tapering periods. Hence, taper periods are effective in improving performance and mood state and elevating the blood T/C ratio.  相似文献   

Prenatal programming of sporting success: Associations of digit ratio (2D:4D), a putative marker for prenatal androgen action,with world rankings in female fencers     

Raúl Bescós  Marc Esteve  Jordi Porta  Mercè Mateu  Alfredo Irurtia  Martin Voracek 《Journal of sports sciences》2013,31(6):625-632

Abstract

Associations of the second-to-fourth digit ratio (2D:4D), a putative marker for prenatal androgen action, and of absolute finger length, a putative marker for pubertal–adolescent androgen action, with sport performance were examined in a multinational sample of 87 world-class women épée fencers. Lower (masculinized) digit ratios correlated, although not significantly so, with better current and highest past world rankings. These correlations were significant for right-hand 2D:4D with controls for the most salient factors for 2D:4D (ethnicity) and world rankings (years of international experience, height, and weight). Longer (masculinized) fingers correlated strongly with better current and highest past world rankings; these correlations became insignificant with the same controls. Replicating previous evidence for fencers, left-handedness was much more prevalent in this sample (21%) than in the female general population, and left-handers had somewhat, but not significantly so, lower 2D:4D as well as better world rankings than right-handers. These findings extend related evidence suggestive of prenatal programming of aptitude across a variety of sports, especially running and soccer. Some known extragenital effects of prenatal testosterone that contribute to the development of efficient cardiovascular systems, good visuospatial abilities, physical endurance and speed, and to the propensity for rough-and-tumble play, apparently promote sporting success in adult life.  相似文献   

Digit ratio (2D:4D) and performance in elite rugby players     

M. Bennett  J. T. Manning  C. J. Cook 《Journal of sports sciences》2013,31(13):1415-1421

Abstract

The relative length of the second and fourth digits (2D:4D) is a putative marker for prenatal testosterone. Low 2D:4D has been reported to correlate with high performance in sport in general. Here, for the first time, we examine the relationship between 2D:4D and performance in elite rugby players. The 44 players (28 forwards, 16 backs) were drawn from the Ospreys Rugby Union Club and 44 age-matched controls. The measures of performance comprised age-adjusted number of international performances (caps) for Wales, a comparison of coaches' first-choice League team with others, and the number of tries scored by backs in club matches. Compared with controls, players were larger and had lower 2D:4D for the right and left hand. With regard to number of caps, players with low 2D:4D in their right hand and low right 2D:4D compared with their left (right ? left 2D:4D difference) had high numbers of caps. First-choice players did not differ significantly from second-choice players in their 2D:4D but they did have a lower right ? left 2D:4D difference than second-choice players. Low right 2D:4D and low right ? left 2D:4D difference were significantly linked with large numbers of tries. We conclude that low right 2D:4D and low right ? left 2D:4D difference are predictors of high rugby performance.  相似文献   

Salivary and plasma cortisol and testosterone responses to interval and tempo runs and a bodyweight-only circuit session in endurance-trained men     

Amy Vivien Tanner  Birthe Vejby Nielsen  Judith Allgrove 《Journal of sports sciences》2013,31(7):680-689

Abstract

The aim of this study was to examine the acute response to plasma and salivary cortisol and testosterone to three training protocols. Ten trained endurance athletes participated in three experimental trials, such as interval training (INT), tempo run (TEMP) and bodyweight-only circuit training (CIR), on separate days. Blood and saliva samples were collected pre- and 0, 15, 30 and 60 min post-exercise. Peak post-exercise salivary cortisol was higher than pre-exercise in all trials (P < 0.01). After INT, salivary cortisol remained elevated above pre-exercise than 60 min post-exercise. Salivary testosterone also increased post-exercise in all trials (P < 0.05). Plasma and salivary cortisol were correlated between individuals (r = 0.81, 0.73–0.88) and within individuals (r = 0.81, 0.73–0.87) (P < 0.01). Plasma and salivary testosterone was also correlated between (r = 0.57, 0.43–0.69) and within individuals (r = 0.60, 0.45–0.72), (P < 0.01). Peak cortisol and testosterone levels occurred simultaneously in plasma and saliva, but timing of post-exercise hormone peaks differed between trials and individuals. Further investigation is required to identify the mechanisms eliciting an increase in hormones in response to CIR. Furthermore, saliva is a valid alternative sampling technique for measurement of cortisol, although the complex, individual and situation dependent nature of the hormone response to acute exercise should be considered.  相似文献   

Musth in elephants     

A. Rajaram 《Resonance》2006,11(10):18-27

Animal behaviour is intimately connected with chemical signaling, often through glandular secretions. This is very significant and obvious in Asian male elephants during their musth period when their temporal glands secrete a fluid with a characteristic odor. Musth gland activity greatly influences the elephant society as well as manelephant interaction.  相似文献   

有关运动与性激素结合球蛋白的研究进展   总被引：1，自引：0，他引：1  

魏宏文  韩兵  王安利 《山东体育科技》2000,(4)

运动训练对性激素结合球蛋白 (SHBG)产生一定的影响 ,间接影响机体雄激素水平 ,从而导致运动能力的变化。目前 ,国内外学者对SHBG进行了广泛的研究 ,并且讨论了血清睾酮 (T)与SHBG的比值 (T/SHBG)在运动员机能评定中的意义  相似文献   

台阶运动负荷前后唾液睾酮和皮质醇的测定与分析   总被引：3，自引：0，他引：3  

孔兆伟  田时佳  蒙自奋 《北京体育大学学报》1996,(3)

通过对10名普通健康男大学生安静状态下及两种运动负荷后唾液睾酮、唾液皮质醇和RPE（主观体力感觉）表等生理指标的测定，发现：运动后，唾液睾酮水平升高，唾液皮质醇无显著变化但有升高趋势。RPE等级升高。结果表明：两次台阶运动负荷后，唾液睾酮、唾液皮质酸及RPE表可作为评定运动疲劳的生理指标。  相似文献