海军障碍训练损伤因素分析及对策   总被引：1，自引：1，他引：0  

丁飞  曹斌 《军事体育进修学院学报》2003,22(2):66-67

通过对海军学员在海军障碍训练中出现的运动损伤调查分析，找出导致海军障碍训练运动损伤的因素，从海军障碍训练方法、手段、设施等几个方面提出了预防对策。  相似文献   

4人制软式排球比赛教学对大学生身心健康的影响研究     

陈静青  陈淑英 《吉林体育学院学报》2006,22(1):93-94

采用问卷调查法、实验法等，对四人制软式排球比赛式教学在大学生身心健康教育中的影响作用进行探讨，结果认为：（1）它符合大学生的身心发展特点，并能有效激发大学生对科技含量高、简单易行而又不失安全性、健康性、娱乐性和竞技性特点的软式排球运动产生兴趣；（2）它对大学生身体素质有良好的改善和增强效果；（3）它对大学生的个性品质和心理素质以及身体健康发展有明显的促进效果；（4）将四人制软式排球赛与比赛式教学法的优点融为一体并应用于高校软式排球的教学实践中，是一种有意义的新尝试，其结果有望产生对高校推广软式排球运动和增进大学生身心健康有利的体育教学新模式。  相似文献   

Hip and upper extremity kinematics in youth baseball pitchers     

Taylor Holt 《Journal of sports sciences》2016,34(9):856-861

The purpose of this study was to examine the relationship between dynamic hip rotational range of motion and upper extremity kinematics during baseball pitching. Thirty-one youth baseball pitchers (10.87 ± 0.92 years; 150.03 ± 5.48 cm; 44.83 ± 8.04 kg) participated. A strong correlation was found between stance hip rotation and scapular upward rotation at maximum shoulder external rotation (r = 0.531, P = 0.002) and at ball release (r = 0.536, P = 0.002). No statistically significant correlations were found between dynamic hip rotational range of motion and passive hip range of motion. Hip range of motion deficits can constrain pelvis rotation and limit energy generation in the lower extremities. Shoulder pathomechanics can then develop as greater responsibility is placed on the shoulder to generate the energy lost from the proximal segments, increasing risk of upper extremity injury. Additionally, it appears that passive seated measurements of hip range of motion may not accurately reflect the dynamic range of motion of the hips through the progression of the pitch cycle.  相似文献   

Lower limb alignment characteristics are not associated with running injuries in runners: Prospective cohort study     

Luiz Carlos Hespanhol Junior  Aline Carla Araújo de Carvalho  Leonardo Oliveira Pena Costa 《European Journal of Sport Science》2016,16(8):1137-1144

There is conflicting evidence on the association between lower limb alignment characteristics and the incidence of running-related injury (RRI). Therefore, the primary aim of this study was to investigate the association between lower limb alignment characteristics and the incidence proportion of RRI in a convenience sample of recreational runners. A total of 89 recreational runners were included in this prospective cohort study. These participants had been running for at least six months and were injury-free at baseline. Lower limb alignment measurements were conducted in order to calculate lower limb discrepancy, Q-angle, subtalar angle and plantar index. All participants also answered a baseline and biweekly online surveys about their running routine, history of RRI and newly developed RRI over a period of 12 weeks. The prevalence of previous RRI and the 12-week incidence proportion of new RRI were calculated. Logistic regression analysis was performed to estimate the association between lower limb length discrepancy, Q-angle, subtalar angle and plantar ach index with the incidence proportion of RRI. The prevalence of previous RRI was 55.1% (n?=?49). The 12-week incidence proportion of new RRI was 27.0% (n?=?24). Muscle injuries and tendinopathies were the main types of RRI identified. The lower leg and the knee were the main anatomical regions affected. We did not find significant associations between lower limb length discrepancy, Q-angle, subtalar angle and plantar arch index and injury occurrence.  相似文献   

农民工工伤保险制度供给研究     

桑子青  顾凡 《咸阳师范学院学报》2007,22(6):75-77

通过分析农民工工伤保险制度供给的公共政策议程背景、经济失衡背景以及现实问题背景三大背景,从农民工、政府及企业三方契约参与者理性选择角度,展现农民工社会保险制度供给中应有的基本战略认识。  相似文献   

学生伤害事故法律责任述论     

秦松梅  代丽 《毕节学院学报》2005,23(2):71-73

学生伤害事故是指学生在校期间或在与学校有关的教育活动中发生的人身伤害事故.近些年来,此类事故时有发生,成为教育界、法学界甚至社会各界关注的热点之一,如何认定学校的法律责任,学校承担法律责任的类型和方式等问题成为人们关注的焦点.但是,到目前为止,有关这方面的研究仍处于起步阶段.理论研究的滞后导致实践操作的困难.现实中主要表现为学生伤害事故不能得到正确、及时、有效和公正的处理与解决.基于此,根据我国现行法律的规定,结合学校实际情况,对此进行简要论述.  相似文献   

On-line estimation of concentration parameters in fermentation processes     

Xiong ZH  Huang GH  Shao HH 《Journal of Zhejiang University. Science. B》2005,6(6):530-534

INTRODUCTION Saccharomycete, closely linked with human life, is the only microbe that has been utilized to the extent of over a million tons in the world, and is one of the modelled biological bacteria mostly used in modern genetic engineering. Since there are no effective online instruments for measuring the production or resultant concentration, which is a very important quality index in fermentation process, soft sensors (Martin, 1997; Tham et al., 1991; Assis and Filho, 2000; Salgad…  相似文献   

Novel distribution pattern of fibrinolytic components in rabbit tissues extract： a preliminary study     

Lu XG  Wu XG  Xu XH  Gong XB  Zhou X  Xu GB  Zhu L  Zhao XY 《Journal of Zhejiang University. Science. B》2007,8(8):570-574

Objective: The purpose of this work was to investigate the distribution pattern of fibrinolytic factors and their inhibitors in rabbit tissues. Methods: The components of the fibrinolytic system in extracts from a variety of rabbit tissues, including tissue plasminogen activator (tPA), plasminogen activator inhibitor-1 (PAI-1), plasminogen (Plg), plasmin (Pl) and α2 plasmin inhibitor (α2PI), were determined by colorimetric assay. Results: The tissue extracts in renal, small intestine, lung, brain and spleen demonstrated strong fibrinolytic function, in which high activity of tPA, Plg and Pl was manifested; whereas in skeletal muscle, tongue and stomach, higher activity of PAI-1 and α2PI showed obviously. Also excellent linear correlations were found between levels of tPA and PAI-1, Pl and α2PI, Plg and Pl. In related tissues, renal cortex and renal marrow showed distinctly higher activity of tPA and lower activity of PAI-1, with the levels of Plg and Pl in renal cortex being higher than those in renal marrow, where the α2PI level was higher than that in renal cortex. Similarly, the levels of tPA, Plg and Pl in small intestine were higher than those in large intestine, but with respect to PAI-1 and α2PI, the matter was reverse. In addition, the fibrinolytic activity in muscle tissue was lower, however, the levels of tPA, Plg, and Pl in cardiac muscle were obviously higher than those in skeletal muscles, and the levels of PAI-1 and α2PI were significantly lower than those in skeletal muscle. Conclusion: Our data demonstrate that a remarkable difference of the fibrinolytic patterns exists in rabbit tissues, which has probable profound significance in understanding the relationship between the function of haemostasis or thrombosis and the physiologic function in tissues.  相似文献   

温州软土地区基坑支护方案的优选研究   总被引：1，自引：0，他引：1  

陶莉  戴庆斌 《温州职业技术学院学报》2011,11(2):51-55

在分析温州地区的环境和地质特点的基础上,总结温州软土地区基坑支护常用的方案,指出基坑支护设计、施工和监理过程中存在的问题。对基于灰理论的基坑支护方案优选方法中的指标重新调整,引入指标权重计算关联度,通过具体的工程实例验证多目标决策方法在基坑支护方案优选的合理性和实用性。  相似文献   

新时期我国软科学研究前沿热点研究——基于软科学文献的知识图谱分析(2008-2018)     

李文强  李海波  迟永峰  陈娜  汝绪伟 《科技管理研究》2020,40(5):252-261

运用科学计量方法对软科学领域的六大核心期刊(2008—2018年)现状和研究热点进行分析。研究发现,目前我国软科学以国家创新驱动发展战略为主要研究方向,围绕区域创新体系及创新链的热点焦点问题和关键环节开展研究,同时,发现各个参与研究者之间合作紧密。研究运用描述性分析的方法,管窥我国软科学领域研究现状,并对未来发展做出展望,为我国软科学繁荣发展提供参考。  相似文献