太极拳对老年人心肺机能的影响   总被引：16，自引：0，他引：16  

梁永文 《体育学刊》2001,8(4):64-65

通过系统观察、测试部分长年参加太极拳练习者和无训练者在完成定量负荷运动前后心肺功能指标变化,发现长期进行太板拳练习的老年人心脏泵血功能、心肌收缩机能、肺活量均显著优于普通人,表明长年从事太极拳运动对促进老年人心肺功能的改善具有积极作用,为老年人参加太极拳运动提供了可靠的实验依据.  相似文献   

对不同项群运动员运动负荷前后左心室舒张功能的观察   总被引：2，自引：0，他引：2  

宋信勇  周全  张维珂  杨俊峰 《北京体育大学学报》2003,26(1):43-44

为了评价不同项群运动员左心室舒张功能,对12名耐力项目运动员和12名速度力量项目运动员12min前后二尖瓣血流频谱进行了检测。结果表明:12min跑后耐力组血流速度积分和E/A明显减小,速度力量组血流速度积分、E峰值和E/A减小十分明显,A峰值减小明显,两组运动员血流速度积分、E峰值和E/A存在显著差异。说明,耐力组左心室舒张主动松驰及被动充盈能力均好于速度力量组。  相似文献   

散步对中老年高级知识分子心脏功能影响的追踪分析     

黄红梅  刘永晖 《体育科学研究》2004,8(4):41-44

对采用散步作为锻炼手段的40名中老年高级知识分子的心脏功能指标进行追踪测试，显示散步可使中老年高级知识分子的PR、HOV、HOI降低；SV、SI、VPE、EWK升高；而对于CO、CI、LVWI的影响较小。提示坚持散步对提高中老年高级知识分子的心脏功能有较好的作用。  相似文献   

心衰康煎液对阿霉素心衰模型大鼠心肌的影响     

季增荣  金春亭  王淑强  王陶冶 《河北北方学院学报(医学版)》2001,18(6):10-11

目的观察中药复方制剂"心衰康煎液"对心衰大鼠心脏血流动力学的影响及心肌细胞的病理学改变.方法利用pclab实验记录分析系统观察和分析各实验组大鼠左心室内压、对大鼠心肌切片H.E染色镜下观察.结果心衰康使心衰得到明显改善,心肌细胞无明显变性、坏死.结论中药复方"心衰康煎液"对心衰大鼠的心肌病变有明显改善,从而产生良好的抗心衰作用.结论  相似文献   

Alterations in autonomic cardiac modulation in response to normobaric hypoxia     

David Giles  John Kelly 《European Journal of Sport Science》2016,16(8):1023-1031

Purpose: The present study aimed to determine if autonomic cardiac modulation was influenced by acute exposure to normobaric hypoxia. Method: Ten healthy male lowland dwellers completed five block-randomised single-blinded, crossed-over acute exposures to a normobaric hypoxic environment, each separated by 24 hours’ recovery (20.3%, 17.4%, 14.5%, 12.0% and 9.8% F_IO₂). Supine recordings were made of arterial oxygen saturation and electrocardiogram (ECG). RR intervals from the ECG trace were analysed for time (SDNN, lnrMSSD), frequency (lnVLF, lnLF, lnHF, lnTP, LFnu, and HFnu), and nonlinear (DFA-α1 and SampEn) heart rate variability components. Results: A significant reduction in arterial SaO₂ occurred with reduced F_IO₂, along with a rise in heart rate (Cohen’s d?=?1.16, 95% Confidence Interval [2.64–6.46]), significant at 9.8% F_IO₂. A decrease in autonomic cardiac modulation was also found as shown by a statistically significant (at 9.8% F_IO₂) decrease in lnTP (d?=?1.84 [1.74–1.94]), and SampEn (d?=?0.98 [0.83–1.12]) and an increase in DFA-α₁ (d?=?0.72 [0.60–0.84]) from normoxia at 9.8% F_IO₂. Conclusion: The decrease in variability indicated a reduction in autonomic cardiac modulation. There appears to be a threshold ～9.8% F_IO₂ (～6000?m equiv.), below which significant alterations in autonomic control occur.  相似文献   

心安灵对麻醉犬心肌缺血的保护作用     

阮鸣 《南京晓庄学院学报》2006,22(4):115-117

目的:观察心安灵对冠脉结扎麻醉犬的保护作用.方法:麻醉犬冠脉结扎复制心肌缺血模型.观察给药后ST段偏移总和(Σ-ST)、ST段抬高≥2mv的个数(N-ST)、LDH、CK释放的变化.结果:心安灵可显著减少冠脉结扎所致的Σ-ST抬高和N-ST增加,同时减少血清中LDH和CK的释放.结论:心安灵对麻醉犬冠状动脉结扎所致的心肌缺血具有明显改善作用.  相似文献   

Cardioprotective activity of synthetic guggulsterone (E and Z-isomers) in isoproterenol induced myocardial ischemia in rats: A comparative study     

Ramesh Chander  Farhan Rizvi  A. K Khanna  Ram Pratap 《Indian journal of clinical biochemistry : IJCB》2003,18(2):71-79

Guggulsterone, a mixture of cis (E) and trans (Z) isomers (7∶3 w/w) was synthesized from 16-DPA. The isomers were separated by column chromatography and evaluated for cardioprotective and antioxidant activities. Myocardial necrosis induced by isoproterenol in rats caused marked increase in serum creatine phosphokinase and glutamate pyruvate transaminase. Simultaneously in ischemic heart, phospholipase, xanthine oxidase and lipid peroxides were enhanced following depletion of glycogen, phospholipids and cholesterol. Treatment with guggulsterone and its both isomers at the dose of 50 mg/kg po., significantly protected cardiac damage as assessed by the reversal of blood and heart biochemical parameters in ischemic rats. The cardioprotective activity of guggulsterone and of both the isomers were compared with that of gemfibrozil at the same doses. Guggulsterone and both the isomers at tested concentrations (5–20mM) inhibited oxidative degradation of lipids in human low-density lipoprotein and rat liver microsomes induced by metal ionsin vitro. The drug counteracted against the generation of superoxide anions (O₂) and hydroxyl radicals (OH⁻) in non-enzymic test systems. It is suggested that cardioprotective and antioxidant activities of synthetic guggulsterone and guggulsterone obtained from gum resinCommiphora mukul that contains isomers E & Z in the ratio of 46∶54w/w are the same.  相似文献   

有氧运动对大鼠心血管自主神经调节功能的影响   总被引：2，自引：0，他引：2  

王松涛  曾云贵  王安利 《体育学刊》2007,14(3):41-45

首先对心率变异性（HRV）和动脉压力反射敏感性（BRS）的测试分析方法进行了选取和改进,然后以正常大鼠为实验对象,观察比较尾动脉血压、脉搏、左室内压、心肌收缩力、心率变异性、动脉压力反射敏感性等指标在8周中等强度游泳运动组大鼠和和安静对照组大鼠之间的差异,旨在分析长期参加有氧运动对心血管自主神经调节功能的影响,为心血管自主神经平衡状态发生改变提供实验证据。研究发现,与对照组大鼠相比,运动组大鼠心肌出现肥大、心脏泵血功能增强、心交感神经介导的动脉压力反射敏感性升高、心迷走神经介导的动脉压力反射敏感性未受影响、心交感神经紧张性变异和心迷走神经紧张性变异程度均增加。研究结果提示,长期有氧运动可增强心血管自主神经的调节功能,使交感神经和副交感神经的协调与对抗关系在一个更高的功能层面上建立新的平衡。  相似文献   

速度滑冰运动员心功能测评指标"心缩间期"比较研究     

王静  于净 《冰雪运动》2007,29(3):60-62

为了探讨简易无创方法监控速滑运动员身体机能,研究速滑运动员心功能监测指标的可靠性、实用性。本文采用心功能监测指标STI(心缩间期),测定运动员心功能水平,为训练选材提供数据。研究方法:随机试验性研究。研究结果:总电机械收缩时间(QS2)男384.87±18,女414.14±14,男女之间有显著性差异P<0.01。射血时间(LVET)男286.00±9.95,女318.00±11.00,男女之间有一定差异P<0.01。结论:速滑运动员STI各项参数,男女有一定差异,P<0.01,这一研究结果提示,应用测定STI监测运动员身体机能,评定有氧耐力训练有参考价值。  相似文献   

高原训练对人体呼吸和循环系统的影响   总被引：1，自引：0，他引：1  

刘学志  彭兰玲 《天水师范学院学报》2007,27(2):100-102

高原训练的生理机制通常被认为是机体对氧不足引起的血氧过少的适应结果。机体对高原的低氧环境很快会建立起一系列复杂的代偿性生理机制,使各系统达到新的平衡,即所谓习服。而这种习服首先对人体呼吸、循环系统产生影响。  相似文献