共查询到19条相似文献，搜索用时 196 毫秒
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对上海体院附属竞技体校竞走、短跑、举重等项目共24名优秀女运动员的检测结果显示,服用 GDM4周后,女运动员的血红蛋白含量平均升高 2克％;相同的大运动量训练后,尿蛋白明显减少或消失。这表明GDM具有提高女运动中运动能力和促进运动后机体恢复的作用。 相似文献
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采用实验对比的方法,探讨了运动训练和服用GDM饮料等对PWC_(170)的影响。结果显示,运动训练可以提高身体工作能力(PWC),但幅度有限;服用GDM饮料4周后,受试者的PWC较服用前有显著提高。 相似文献
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观察浓缩乳清蛋白粉对体育专业篮球运动员血液学指标的影响。受试对象为某高校体育专业男篮运动员16名，随机分为对照组和营养组，分别于试验前和3个月后采用功率自行车完成20min定量负荷运动，运动后即刻静脉抽血，肝素抗疑，测定血红蛋白（HB）、红细胞计数（Rat）、红细胞压积（HCT）和红细胞平均体积（MCV）等血液学指标。结果：服用浓缩乳清蛋白粉后，营养组HB、RBC、HCT明显高于对照组（P〈0．05）。营养组MCV显著低于对照组（P〈0．05）。这表明大强度训练服用浓缩乳清蛋白粉能引起人体HB、RBC、HCT等的改变，MCV基本不变，可提高运动能力，具有抗疲劳作用。 相似文献
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递增负荷和运动训练对红细胞变形性的影响 总被引：11，自引：0，他引：11
魏安奎 《上海体育学院学报》1996,20(3):60-66
采用实验法,探讨了递增负荷和运动训练对红细胞变形性的影响。结果显示,安静时各受试组的红细胞变形能力无明显差异,但在递增负荷后,红细胞变形能力较安静时显著下降;足球运动员的红细胞变形能力较训练前有所提高。 相似文献
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对运动大鼠溶血红细胞主要性能的研究 总被引：2，自引：0，他引：2
通过对大负荷运动后溶血造成的血红蛋白下降组大鼠(血浆触珠蛋白显著下降而游离血红蛋白浓度显著上升,血红蛋白显著下降)和正常对照组大鼠红细胞内ATP含量、红细胞内超氧化物歧化酶活力、红细胞积分指数IDI值等指标的测定,比较研究了两组大鼠红细胞的能量代谢能力、抗氧自由基能力,综合变形能力等主要性能,同时分别比较了其他指标如血糖浓度、血浆超氧化物歧化酶活力、取向指数OI值等。结果表明:运动性溶血组大鼠三大主要性能均有降低;溶血组大鼠血糖浓度没有显著变化,推断其红细胞分解葡萄糖制造ATP的功能下降,红细胞内SOD活力及血液总SOD活力均有下降,前者降低更为明显;取向指数降低,推断红细胞综合变形能力下降可能与红细胞形态的完整性降低有关。 相似文献
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《安徽体育科技》2001,(3)
扬州大学体育学院潘同斌等选取参加全国大学生运动会赛前集训的长跑运动员1 0名 ,于集训前后进行红细胞数量、血红蛋白、血清铁蛋白、转铁蛋白的测试。结果显示 ,30 0 0米测试跑后 ,低铁及血清铁蛋白、转铁蛋白的低水平导致运动后红细胞数量和血红蛋白含量比运动前明显下降 ;50 0 0米测试跑后 ,由于长时间运动致使红细胞破坏 ,血清铁蛋白及转铁蛋白由受损红细胞或死亡红细胞释放至血清 ,红细胞数量和血红蛋白降低。另外 ,阶段性训练 (两个月 )前后 ,安静时 ,血清铁蛋白在训练后期明显降低 ,提示长期大运动量耐力训练可能导致潜在的或早期缺铁症状。而训练后期的转铁蛋白上升 ,提示适应性铁转运加强。耐力运动对血色素及铁代谢状况的影响 相似文献
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迷迭香对大强度耐力训练大鼠血清抗氧化酶活性及某些生化指标的影响 总被引：1，自引：0，他引：1
以SD雄性大鼠为实验对象,通过建立大强度耐力训练运动模型,研究迷迭香及大强度耐力训练对大鼠血清抗氧化酶活及某些生化指标的影响,结果显示,大强度耐力训练可使大鼠血清中SOD、GSH-Px活性升高,CAT活性下降。服用迷迭香后,不论是安静组还是运动组这3种抗氧化酶活性都明显升高。大强度耐力训练后大鼠的1ib含量稍有下降,迷迭香可以改善这种现象,使大鼠Hb含量明显上升,提示迷迭香能提高有氧运动能力．运动状态下各组血清MDA含量分别低于其相应的安静状态下各组,服用迷迭香的运动、安静组血清MDA含量明显低于其相应的对照组服用迷迭香的大鼠血中肌酐含量明显高于其相应的对照组,说明迷迭香能增加肌肉中肌酸和磷酸肌酸含量,提高肌肉机能水平。 相似文献
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采用实验法,对87名受试者服用GDN或鲜橙汁后完成相同逐级递增负荷运动时的代谢能力,进行测定与比较。结果显示,GDM对改善人体代谢能力,尤其是有氧代谢能力,加速运动后乳酸的清除,促进机体的恢复,具有显著作用。 相似文献
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“六段运动”对提高人体心肺功能和有氧能力效果的观察 总被引：3，自引：0，他引：3
对１４名中年女性受试者坚持两个月（每天１５ｍｉｎ）六段运动锻炼前后心肺机能和有氧能力进行了测试。结果显示，经两个月锻炼后，受试者肺活量及其指数较锻炼前增大，ＰＷＣ１３０和氧脉搏提高，表明六段运动锻炼对受试者整体心血管机能能力和呼吸机能有着良好的影响 相似文献
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刘兵 《体育科技文献通报》2007,15(3):82-83,93
本实验随机抽取20名健身房男性新会员为实验对象,对他们进行三个月的健美训练。通过对训练前后肌肉围度和肌肉绝对力量等指标的比较,结果表明:采用全程动作练习方法的实验组,其肌肉围度和肌肉力量改善的效果好于实验前和对照组。 相似文献
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高原训练对男子赛艇运动员有氧能力的影响 总被引：1，自引：0，他引：1
通过对29届奥运会中国男子轻量级赛艇队员,在高原训练前后HB水平变化,多级负荷测试中血乳酸和心率变化,以及6km成绩的变化进行分析。结果发现：队员血液携氧能力、骨骼肌代谢能力和心血管系统的有氧能力均有明显增强。 相似文献
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To examine the influence of pre-warming on the physiological responses to prolonged intermittent exercise in ambient temperatures of 21.5?±?0.6°C and relative humidities of 35.7?±?5.4% (mean?±?s), six healthy men performed intermittent treadmill running (30-s bouts at 90% of maximal oxygen uptake separated by 30-s static recovery periods) to exhaustion after active pre-warming, passive pre-warming and pre-exercise rest (control). Exercise time to exhaustion was significantly different between all conditions (active, 51.8?±?7.2?min; passive, 38.5?±?11.1?min; control, 72.0?±?17.2?min; P <?0.05). These changes in performance time were closely associated with a significant decline in both the rate of heat storage and heat storage capacity (P <?0.05). Rectal temperature, heart rate and ratings of perceived exertion were significantly higher during exercise in the two pre-warming conditions than in the control condition (P <?0.05). Ratings of perceived exertion were also significantly higher during exercise following passive pre-warming compared with active pre-warming (P <?0.05). During exercise there were no significant differences in serum prolactin, plasma norepinephrine and plasma free fatty acid concentrations between conditions. We conclude that both active and passive pre-warming promote a reduction in prolonged intermittent exercise capacity in environmental temperatures of 21°C compared with pre-exercise rest. These performance decrements were dependent upon the mode of pre-warming and closely reflected alterations in body heat content. 相似文献
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Sidney Grosprêtre Thomas Jacquet Florent Lebon Charalambos Papaxanthis Alain Martin 《European Journal of Sport Science》2018,18(2):209-218
The neural mechanisms explaining strength increase following mental training by motor imagery (MI) are not clearly understood. While gains are mostly attributed to cortical reorganization, the sub-cortical adaptations have never been investigated. The present study investigated the effects of MI training on muscle force capacity and the related spinal and supraspinal mechanisms. Eighteen young healthy participants (mean age: 22.5?±?2.6) took part in the experiment. They were distributed into two groups: a control group (n?=?9) and an MI training group (n?=?9). The MI group performed seven consecutive sessions (one per day) of imagined maximal isometric plantar flexion (4 blocks of 25 trials per session). The control group did not engage in any physical or mental training. Both groups were tested for the isometric maximal plantar flexion torque (MVC) and the rate of torque development (RTD) before and after the training session. In addition, soleus and medial gastrocnemius spinal and supraspinal adaptations were assessed through the recording of H-reflexes and V-waves, with electrical stimulations of the posterior tibial nerve evoked at rest and during MVC, respectively. After one week, only the MI training group increased both plantar flexion MVC and RTD. The enhancement of muscle torque capacity was accompanied by significant increase of electromyographic activity and V-wave during MVC and of H-reflex at rest. The increased cortical descending neural drive and the excitability of spinal networks at rest could explain the greater RTD and MVC after one week of MI training. 相似文献
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Verheyden B Eijnde BO Beckers F Vanhees L Aubert AE 《Journal of sports sciences》2006,24(11):1137-1147
The purpose of this study was to evaluate the effects of a realistic, feasible, and commonly used fitness training programme on cardiac autonomic control in 14 sedentary men aged 62.0 +/- 6.1 years (mean +/- s). All participants performed a one-year fitness training programme in which training intensity and frequency were specifically chosen to be compliant for the majority of the participants (2-3 sessions per week at moderate intensity). At the same time, a reference group consisting of 15 sedentary age-matched men (age 64.2 +/- 6.5 years) did not change their habitual physical activity. Measurements were performed before and after the training intervention. Cardiac autonomic control was inferred from resting values (supine and standing) of heart rate variability (HRV) computed in the frequency domain over 10-min intervals. Endurance capacity was evaluated during a maximal incremental bicycle ergometer test. In spite of an increase in peak oxygen consumption (VO2peak) by 6.4% after training, heart rate in the training group remained unchanged at rest and at the same metabolic demand. No changes in resting parameters of HRV were shown for either groups or positions. Results from this study provide no evidence of a clinically meaningful increase in the vagal modulation to the sinus node at rest after one year of low-volume and moderate-intensity fitness training in men aged 55-75 years. 相似文献
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用最大心率的60%-80%来控制小学生有氧耐力训练的强度,经过2个月的递增负荷训练后,安静心率、肺活量和50m×8耐力跑成绩都有明显改进。而通过游戏和自由活动的练习形式促进有氧耐力提高的效果不明显。 相似文献
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复方白蚁制剂对提高训练大鼠抗疲劳能力的研究 总被引：4，自引：0，他引：4
通过慢性动物实验 ,观察与分析复方白蚁制剂对提高训练大鼠抗疲劳能力的作用。实验材料为成年雄性 SD大鼠 2 5只 ,随机分成实验组、运动对照组和安静对照组。实验组灌喂复方白蚁制剂 ,对照组灌喂相同剂量的 5 %葡萄糖溶液。除安静对照组外 ,实验组和运动对照组均在国产鼠类电动跑台上进行 6周亚极量强度的耐力训练。实验结果 :实验组 Hb含量、安静时 T值和T/ C比值均明显高于对照组 ;实验组睾丸间质细胞层厚度和脾巨噬细胞数量增加 ,体内锌、铜、铁等微量元素含量增加 ,红细胞 ATP酶的活性也明显提高。提示系统服用“复方白蚁制剂”有助于延缓训练大鼠疲劳的发生和加速运动能力的恢复 相似文献