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1.
目的:通过研究外源性抗氧化剂的补充对运动性疲劳的影响,得出外源性抗氧化剂补充量与运动型疲劳抑制的关系模型,指导训练康复治疗。方法:构建外源性抗氧化剂对运动性疲劳影响的数学关系模型,通过外源性抗氧化剂的补充,分析对过度训练导致运动性疲劳病理观察情况。运动员进行运动性疲劳训练中的外源性抗氧化剂补充统计值,通过分析运动性疲劳承受肌免疫细胞的刊过氧化酶SOD和CAT活性以及生理盐水等指标,进行差异性统计,构建统计模型,观测其差异性特征。结果:通过外源性抗氧化剂补充,计算运动性疲劳抑制指数,能有效对过度运动训练损伤导致的运动性疲劳等并发症实现诊疗。采用该关系模型,肺动脉收缩压有82.6 mm Hg改善为92.0 mm Hg,肺动脉舒张压有44.9 mm Hg改善为50.3 mm Hg,展示了较好的性能。结论:外源性抗氧化剂的补充对运动性疲劳的影响关系模型定量分析准确,通过外源性抗氧化剂补充能有效对运动性疲劳进行抑制治疗,效果较好。 相似文献
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目的:鱼跃垫球过程中容易导致肘关节损伤,关节是人体的重要连接部分,在排球运动中,鱼跃垫球导致的肘关节损伤,需要肘关节损伤预防分析。方法:基于Langevin模拟方法构建排球运动鱼跃垫球肘关节损伤预防治疗方案,经局部直接介入的肘关节损伤治疗法,对肘关节损伤患者,采用X线、CT、核磁共振片等方法对肘关节损伤部位实现精确定位分析,然后采取相应的救助措施,从禁做竞技动作训练,肘关节损伤运动员要加强对伤处的体疗训练,肘关节损伤运动员要改变训练器械,减少训练次数和组数和积极的心理治疗等方法进行预防和康复训练分析。结果:受伤运动员进行了器械心理混合再生疗法治疗,治疗后受伤运动员肌力增强,日常生活活动能力增加,运动功能好转,受伤运动员有一定的近期疗效。结论:通过该预防和治疗方案,能有效预防排球运动中鱼跃垫球肘关节损伤,采取相应的救助措施进行紧急急救,保证了运动员的健康和安全。 相似文献
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王少华 《内蒙古科技与经济》2000,(Z1)
过度训练是运动员由于训练不当而造成的运动性疾病之一 ,如出现过度训练 ,则有可能影响运动员的运动能力 ,丧失比赛机会 ,或因体力、心理状态不佳不能取得应有的成绩。因此教练员和医务工作者应做好对运动员的监督 ,避免过度训练的发生 ,同时要做到早期发现 ,早期治疗 ,以避免不必要的损伤。1 过度训练的症状早期无特异性表现 ,主要为精神神经症状 ,如不及时调整 ,则可引起机体各器官系统功能紊乱的症状。1 .1 神经精神症状 :为早期表现 ,运动员可出现睡眠障碍 ,(如失眠、多梦、易惊 )头痛头晕 ,无训练欲望 ,心情烦燥 ,记忆力下降 ,易激怒… 相似文献
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采用科学的方法调整竞技状态、合理安排运动训练负荷、预防过度训练和运动损伤。采用文献资料法、实验法,针对羽毛球运动员的运动及供能特点,通过对多项相关生理生化指标的测试和分析,客观地诊断羽毛球运动员竞技状态、运动疲劳的程度和身体恢复的情况。反应时、肌力、心率、最大做功能力、血尿素、血睾酮、血乳酸等几项指标能够较好反应羽毛球运动员训练效果,指导科学训练。 相似文献
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目的:为了给教练员和运动员提供参考依据。方法:文章运用问卷调查法、专家访谈法、文献资料法、逻辑分析法就跳跃运动中膝关节损伤致因进行分析。结果:膝关节特殊的解剖结构、不科学的运动训练是跳跃运动中损伤的主要致因。结论:科学的运动、训练,及时总结经验、教训,掌握运动损伤发生的规律、做好预防和治疗工作,就能最大限度地减少或避免膝部损伤,从而保证训练和比赛的正常进行。 相似文献
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《科技通报》2015,(12)
目的:在人体的各项运动中,运动骨骼肌的受力不均衡或者受力不当,都会导致肌肉和韧带损伤,研究运动骨骼肌受力特征并对分析其对韧带损伤的影响,指导运动肌肉和韧带损伤治疗。方法:采用计算机仿真模拟和医学临床跟踪方法分析运动骨骼肌的受力特征,并分析对韧带损伤的治疗效果。利用佩戴在胯部的加速度传感器对人体在跑步、静止、走路和跳跃几种动作下进行运动特征的原始数据采集,选用两个加速度传感器,定量分析人体运动行为的动作类型、行为模式,并提取相关的信息,指导韧带损伤治疗。结果:分析得到不同患者的运动骨骼肌受力特征张力模型,在运动骨骼肌肉的强直收缩曲线中,肌肉尚未恢复,就会产生新的记录,循环往复,成为连续的肌肉响应。结论:该方案指导韧带损伤治疗,提高韧带损伤康复率,提高对运动韧带损伤的预防和治疗效果。 相似文献
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通过对14名我国女子优秀拳击运动员进行运动创伤调查分析,旨在寻找预防或减少创伤的措施,采用问卷调查及访谈形式获取资料并进行常规数理统计和分析,结果表明:总伤病率为100%,损伤多发生于眼、鼻、手等部,自我保护意识欠缺是首位损伤原因。此外,与过度疲劳与带伤训练、准备活动不够充分亦有明显关系。 相似文献
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在各种运动项目的运动损伤中,膝关节损伤是一种较为常见的运动损伤。根据调查资料显示,各种体育运动均有不同程度的膝关节运动损伤现象。这些运动损伤给全民健身运动中的健身活动、竞技运动员的运动训练、及体育院校学生的教学训练均带来了诸多不利影响,因此,有必要开展有关膝关节运动损伤的预防与治疗方面的研究,以避免在体育运动中各类膝关节损伤给参加者带来的诸多不利影响。 相似文献
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A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
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Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 相似文献
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Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
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Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献