中老年体育教师血压状况追踪观察     

曾琳娜  伍碧珍  王明波  彭燕群  黄映波  何莹 《广州体育学院学报》2002,22(4):29-31

从医学角度对青少年时期从事大运动量训练的中老年体育教师进行血压状况追踪观察，并与同龄学科教师进行对照。结果表明：观察组血压明显高于对照组；观察组血压随年龄的增长而增高，高血压总病率在60岁前增长幅度最大；通过比较1989年、1994年、1999年和2001年追踪观察结果，观察组的血压以1989年—1994年的变化幅度最大。结论：中老年体育教师是患高血压痛的高危人群、必须提前进行干预。加强运动员退役后的医务监督，综合防治，减少疾病的发生。  相似文献   

对高水平散手运动员赛前训练部分生化指标的监测分析   总被引：8，自引：2，他引：6  

谭欢  张育明  徐国栋 《武汉体育学院学报》2005,39(5):44-46,56

通过文献资料法、实验法、数理统计法和系统方法,对湖北省参加2004年全国散打锦标赛的高水平运动员在赛前训练的部分生化指标进行了监测。结论表明:通过对赛前血色素、血尿素、血清肌酸激酶变化的观察,其能反映高水平运动员对赛前运动负荷的适应情况以及身体机能的状况。安静时血乳酸值对周训练后运动员机能水平变化的反映不灵敏,运动后血乳酸值可反映赛前训练对抗强度及运动员的无氧能力。  相似文献   

锌对力竭运动时大鼠肝脑组织自由基代谢的影响   总被引：13，自引：0，他引：13  

张平  李明学  李岚 《体育科学》2005,25(5):63-64

以大鼠力竭性运动为模型，观察锌对力竭运动时肝和脑组织中自由基代谢的影响。结果显示：力竭运动后即刻，肝、脑组织的MDA和SOD显著下降。补充锌能使力竭运动时肝、脑组织的MDA明显降低，阻止SOD下降，并使大鼠运动至力竭的时间稍有延长。提示，力竭运动使大鼠肝、脑组织中的自由基代谢加强。锌在大鼠肝、脑组织中具有很强的抗氧化作用，从而消除运动时产生的过量自由基。  相似文献   

基于领域本体对专利情报知识挖掘的浅析   总被引：1，自引：0，他引：1  

陶然  李晓菲 《情报学报》2008,27(2):212-217

专利作为企业间竞争博弈的重要信息源,通过对其进行深挖掘可以把握竞争对手的技术发展战略以及未来的产品布局,同时还可借助既有专利信息进行产品发明及再创新,故对专利情报进行有效组织和管理,实现隐性知识发现是当今热点问题.通过以实际工作中血管支架专利分析为例,结合对专利情报本身结构的分析,并引入本体理论,同时借助TRIZ和推理机制等概念,初步探讨基于领域本体的专利情报知识挖掘,拟研究一种可以面向专利用户实现智能化情报挖掘体系,从而有效支持专利知识的共享与重用.  相似文献   

Wearable skin-like optoelectronic systems with suppression of motion artifacts for cuff-less continuous blood pressure monitor     

Haicheng Li  Yinji Ma  Ziwei Liang  Zhouheng Wang  Yu Cao  Yuan Xu  Hua Zhou  Bingwei Lu  Ying Chen  Zhiyuan Han  Shisheng Cai  Xue Feng 《国家科学评论(英文版)》2020,7(5):849

According to the statistics of the World Health Organization, an estimated 17.9 million people die from cardiovascular diseases each year, representing 31% of all global deaths. Continuous non-invasive arterial pressure (CNAP) is essential for the management of cardiovascular diseases. However, it is difficult to achieve long-term CNAP monitoring with the daily use of current devices due to irritation of the skin as well as the lack of motion artifacts suppression. Here, we report a high-performance skin-like optoelectronic system integrated with ultra-thin flexible circuits to monitor CNAP. We introduce a theoretical model via the virtual work principle for predicting the precise blood pressure and suppressing motion artifacts, and propose optical difference in the frequency domain for stable optical measurements in terms of skin-like devices. We compare the results with the blood pressure acquired by invasive (intra-arterial) blood pressure monitoring for >1500 min in total on 44 subjects in an intensive care unit. The maximum absolute errors of diastolic and systolic blood pressure were ±7/±10 mm Hg, respectively, in immobilized, and ±10/±14 mm Hg, respectively, in walking scenarios. These strategies provide advanced blood pressure monitoring techniques, which would directly address an unmet clinical need or daily use for a highly vulnerable population.  相似文献   

Reliability of arterial spin labelling measurements of perfusion within the quadriceps during steady-state exercise     

Jonathan Fulford  Anni Vanhatalo 《European Journal of Sport Science》2016,16(1):80-87

Arterial spin labelling (ASL) provides a potential method to non-invasively determine muscle blood flow and examine the impact of interventions such as supplementation and training. However, it's a method with intrinsically low signal, leading to limitations in accuracy and temporal resolution. To examine these limitations, the current study measured perfusion via ASL on three occasions in the rectus femoris of 10 healthy adults, during light and moderate exercise, over three different exercise durations. For data sampled over 9 min, light intensity exercise gave an average perfusion of 35.0 ± 5.1 ml/min.100g^?1 with a coefficient of variation (COV) of 16% and single intraclass correlation coefficient (ICC) of 0.67. For the moderate bout, perfusion was 51.3 ± 5.6 ml/min.100g^?1 (COV 10%, ICC 0.82). When the same data were analyzed over 5 min 24 s, perfusion was 37.8 ± 11.13 (COV 30%, ICC 0.13) during light and 49.5 ± 8.8 ml/min.100g^?1 (COV 18%, ICC 0.52) during moderate exercise. When sampling was reduced to 1 min 48 s, perfusion was 41.2 ± 13.7 (COV 33%, ICC 0.26) during light and 49.5 ± 13.6 ml/min.100g^?1 (COV 28%, ICC 0.04) during moderate exercise. For 9 min a significant perfusion difference was found between the exercise intensities; however, this was not the case for sampling over 5 min 24 s or 1 min 48 s. Such findings illustrate the potential of ASL to non-invasively monitor muscle perfusion under steady-state conditions, but highlight that extended exercise protocols are necessary in order to generate date of sufficient reliability to be able to discriminate intervention dependent perfusion differences.  相似文献   

吸血蛭与非吸血蛭间的氨基酸比较研究     

王德斌  杨黎江  徐幼虹  仝向荣  路斌 《昆明师范高等专科学校学报》2002,24(4):42-43,46

为探究传统中药水蛭的药用成分，更好地开发利用蛭类资源，本文通过高效氨基酸分析仪，分析了云南四种蛭类的氨基酸组成．结果表明吸血蛭与非吸血蛭在氨基酸组成上有明显差异．结合以往实验，分析了非吸血蛭活血化瘀的可能药用成分，为合理开发利用蛭类资源提供了资料和建议．  相似文献   

便携式多参数监护仪的研制   总被引：3，自引：0，他引：3  

邹波  范静辉 《深圳职业技术学院学报》2004,3(4):6-9

本介绍了一种便携式人体多参数监护仪的研制方法，包括：心电检测、血压检测、血氧饱和度检测、呼吸检测模拟电路的设计，以及存储单元、A／D转换器、USB通讯口等接口模块的设计。  相似文献   

生物化学物质代谢双语教学方法的实践与探索     

丁学知 《教师教育研究》2003,15(5):54-58

通过在生命科学专业的专业基础课程生物化学“物质代谢”章节的双语教学实践的探索 ,提出了“六记忆”、“三结合”这种具有创新性的双语教学模式。六记忆的具体教学步骤 :专业英语词族与词前缀、后缀简化记忆 ;生化专业英语单词意、形的异、同对比记忆 ;生化反应类型与多种英语句型特点综合归一记忆 ;根据生物化学反应底物推测其产物、酶或辅因子及其催化反应类型记忆 ;多种生化物质分解与合成代谢的对比记忆 ;多个复杂结构式简化记忆。“三结合” :即采用参与式教学 ,将课堂讨论与英语提问、答疑相结合 ;采用启发式教学 ,将生物化学重要基础理论知识与科学研究及进展相结合 ;将多媒体教学与常规教学手段相结合 ,取得了良好的教学效果  相似文献   

凉血活血中药治疗重度黄疸型肝炎的疗效观察     

周庆琳 《孝感职业技术学院学报》2004,7(1):81-83

目的:观察大剂量凉血活血中药对重度黄疸型肝炎的疗效;方法:将重度黄疸型肝炎随机分为治疗组和对照组,治疗组除常规使用西药护肝外加用大剂量凉血活血中药(大黄、丹参、赤芍等)治疗,与常规西药护肝治疗对照;结果:治疗组退黄降酶总有效率为88.89％,优于单用西药护肝组(58.46％),P<0.01。结论:大剂量凉血活血中药结合常规西药护肝治疗重度黄疸型肝炎对于退黄、降酶的疗效明显优于单用西药治疗,且无明显副作用。  相似文献