How much does lower body strength impact Paralympic running performance?

Objectives: Development of evidence-based methods of Paralympic classification requires research quantifying the relative strength of association between ratio-scaled measures of impairment and athletic performance. The purpose of this study was to quantify the extent to which muscle strength affects running performance in runners with and without brain impairment. Design: Cross-sectional study. Methods: Participants were 41 male runners: 13 with brain impairments (RBI) and 28 non-disabled (NDR). All participants completed a maximal 60-m sprint and a novel battery of three lower limb isometric strength tests. Results: RBI showed significantly lower strength scores compared with NDR on the more affected side in leg flexion (176 vs. 243?N), leg extension (993 vs. 1661?N) and plantarflexion (824 vs. 1457?N). Significant differences were also seen on the less affected side in plantarflexion (1072 vs. 1508?N). RBI were significantly slower in the acceleration phase (0–15?m) (3.2?s?±?0.3?vs. 2.8?s?±?0.2) and top speed phase (30?60?m) (4.3?s?±?0.6?vs. 3.8?s?±?0.3). Correlation analysis showed stronger relationships between strength and running performance in RBI than NDR; however, the correlations were not significant. Conclusions: This study evaluated measures to assess strength for the purposes of classification and found that the measures were significantly different in RBI compared with NDR indicating the tests were able to capture strength impairment in this population. This study indicates that strength may be an important impairment type to assess in this population, as impairments of muscle strength may influence the outcome of running performance in athletes with more severe impairments.     

对成人心血管机能健康评价的探讨

对德州市成人的心血管机能指标：心率、收缩压、舒张压、台阶指数进行分析与评价，结果为下等和差等、研究认为健康意识差、膳食结构不合理、运动习惯差、缺少体育文化氛围是造成现状的重要原因，针对群体状况提出“自我感觉练习法”和几项对策与建议，以指导健身练习。     

肇庆学院教工羽毛球爱好者运动损伤情况调查

对肇庆学院38名教工羽毛球爱好者进行了运动损伤情况的调查，共查出损伤66人（次），不同类型的损伤17种，损伤次数总计132次．多数伤者未采取有效的方法治疗，而仅依靠自然恢复，对此，应加强对运动者的指导，健全运动康复的手段，以达到科学健身的目的。     

休闲体育主体性研究

休闲体育是个体摆脱现实生活中的种种限制,感受心灵愉悦,体验自我存在,获得生命自由的主体性活动。当前社会"麦当劳化"和消费主义盛行,人们的休闲体育丧失了主体性、创造性和自由,不能使人们获得全面发展。为此,人们只有增强自己的主体性,才能在休闲体育中获得充分发展。     

体育教学中如何让学生进入活动状态

体育教学过程是集教学，锻炼、教育为一体的综合过程，怎样才能上好一堂体育课．其影响的因素是诸多的，本文试图从学生练习中的运动兴趣、准备活动、语言刺激及场地器材等方面进行阐述．     

关于奥运会背景下体育营销发展思路和经验的探讨

体育营销是提升企业品牌知名度与品牌形象,扩大产品销售和提高企业市场竞争力的有效方法。在奥运会体育营销战略中,企业应将商业营销与人文精神、创造力、持续性、整合等概念相结合,使得受众更深刻地理解体育精神,满足产品带来的高层次的精神需求,提升和延伸品牌价值。     

体育装备高科技化的利与弊

科技的进步如何促进体育的发展,又如何威胁体育竞赛的公平性,笔者从体育装备科技化对体育运动的影响作辩证思考。     

昆明市商业健身场所女性体育消费调查研究

本文主要采用问卷调查法、文献资料法和数据统计法等方法。对昆明市商业健身场所的女性消费者进行基本情况调查、消费动机以及获取健身消费信息途径等调查分析。目的在于为女性消费者提供参考和指导、为商业健身场所提供数据支持。     

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采用文献资料、问卷调查和数理统计等方法,对豫东地区城镇和乡村体育人口的发展现状进行调查研究.结果表明：豫东地区城镇、乡村体育人口年龄结构不均衡,男性呈＂马鞍状＂分布,随着年龄增加城镇女性体育人口呈总体增加趋势,而农村呈总体减少趋势;城镇中青年和农村老年人加入体育人口行列成为新农村体育发展的难点;城镇、乡村体育人口文化程度较高;城镇体育人口锻炼主要集中在对场地要求不高的项目,内容较为丰富,且对场地的主观需求较为强烈,乡村体育人口的锻炼项目主要集中在生活态型的运动,内容单一;城镇和乡村居民参加体育锻炼的动机不完全相同,但均主要停留在生理方面,而对心理和社会适应方面需求较少.