硒,硒缺乏和运动

硒是人体必须的微量元素,近年来,硒的生化作用的研究已成为国内外研究的兴奋点.而硒缺乏与运动对人体的影响在运动医学界取得的成就也日益引起人们的关注,这也为运动界,营养学界提供了新参考.     

我国优秀女子举重运动员主要专项辅助动作成绩与竞赛动作成绩相关分析

采用文献资料、专家访谈、问卷调查、数理统计等研究方法,对我国优秀女子举重运动员主要专项辅助动作成绩与竞赛动作成绩进行相关研究。结果显示:主要专项辅助动作成绩与竞赛动作成绩具高度显著性相关;高抓、高翻借力推、宽硬拉成绩与抓举成绩,下蹲翻半挺成绩与挺举成绩直接相关;高抓、高翻借力推、下蹲翻半挺成绩共同作用影响抓举成绩;下蹲翻半挺、前深蹲成绩共同作用影响挺举成绩;主要专项辅助动作成绩受爆发力和绝对力量的影响。     

我国竞技健美操规则的改变及其对运动技术发展的影响

为进一步促进我国竞技健美操运动技术水平的提高，对我国1986～1994年期间5次颁布的竞技健美操规则进行了研究；结合多年参加该项目训练、比赛的体会，分析了我国竞技健美操运动技术发展的状况，并提出相应的训练手段。     

中国两次新图书馆运动比较研究

中国20世纪的新图书馆运动与21世纪的新图书馆运动是对我国图书馆事业的发展方向、服务方式、服务理念产生深远影响的两次图书馆运动。这两次新图书馆运动在其发生的背景、推动我国图书馆人文精神和研究方面所做的贡献及其对中国图书馆理论与实践所产生的意义等方面都各自有其独特之处。     

篮球技战术的理论思维与突破

我国篮球技战术的理论思维始终是一个薄弱环节,落后于运动实践的发展。我们的理论视点偏重于孤立静止地认识技术,欧美强队却以“时空对抗技术”走在技术发展的前列。我们的战术思维仍沿袭着“固定化、模式化”的老路。世界强队的“机动进攻”的战术打法更趋向于机动灵活。差距是明显的。我们应学会科学的理论思维,来探索篮球技战术发展的规律,形成正确的认识,完成对运动实践的指导作用。     

新中国初期的高校师生阅读

建国初期，教育的阶级性和功利性成为高等教育的铁律，政治运动和政治性学术批判，对高校师生阅读产生了重大影响，红色苏联文化作品成为当时主要课外阅读时尚。     

The “Free Press” of Unionized Journalists and Students

This paper outlines a history of the union organizing of the American Newspaper Guild at Thomson Newspapers’ Peterborough Examiner in Canada from 1968 to 1969. It examines the communication tools that union members used to facilitate this labor organizing and “bite back” at the profitable Thomson chain. Peterborough newsworkers went on strike from November 1968 to April 1969 over union recognition. During the strike, the union members built an unprecedented alliance with Ontario university students, collaboratively launching a strike newspaper called the Peterborough Free Press. Expanding on the concept of temporary labor convergence, this paper considers how strike newspapers can be seen as a form of alternative journalism that newsworkers use as a campaigning tool to communicate their struggles to the public and put pressure on news corporations to bargain with them. This case study is situated in the local institutional contexts of labor relations at the Peterborough Examiner and the news industry in Peterborough, where Thomson Newspapers had a media monopoly. It is based on labor standpoint and signal juncture analyses of union archival documents and newspaper content. The research ultimately suggests that newsworkers should not only focus on communication tools but also build bridges with community members.     

栽培式教育的理论基础

当下的教育惟分数论依然十分严重,对人的培养反而成了对学生的压制。为了改变这种现状,我们提出了栽培式教育的理念。栽培式教育的理论基础有人本主义、建构主义、多元智能理论和素质教育等。     

运动诱导神经发生的相关研究

成年哺乳动物神经发生仅发生在侧脑室的室管膜下层和海马齿状回的颗粒细胞下层两个区域。综述了检测神经发生的主要方法,从神经递质、生长因子、营养因子等方面探讨了运动诱发神经发生的相关机制,并分析了运动诱发的神经发生对学习记忆能力的意义。     

Fatigue increases ankle sprain risk in badminton players: A biomechanical study

ABSTRACT

Ankle sprains are the most common injury in regular badminton players and usually occur at the end of a match or training. The purpose of the present study was to examine the influence of fatigue produced by badminton practice on the lower limb biomechanics of badminton players. It was hypothesized that fatigue induces ankle kinematic and lower leg muscle activity changes which may increase the risk of ankle sprain. Ankle kinematics, ankle kinetics and muscles activities of 17 regular badminton players were recorded during lateral jumps before and after an intense badminton practice session. Post-fatigue, ankle inversion at foot strike and peak ankle inversion increased (+2.6°, p = 0.003 and +2.5°, p = 0.005, respectively). EMG pre-activation within 100 ms before foot landing significantly decreased after fatigue for soleus (?23.4%, p = 0.031), gastrocnemius lateralis (?12.2%, p = 0.035), gastrocnemius medialis (?23.3%, p = 0.047) and peroneus brevis (?17.4%, p = 0.036). These results demonstrate impaired biomechanics of badminton players when fatigue increases, which may cause a greater risk of experiencing an ankle sprain injury.