女子200m跑速度模式对运动成绩的影响     

张先锋  常静 《西安体育学院学报》2005,22(5):67-69

对不同训练水平女子200m跑运动员,两种速度模式200m跑的每25m分段时间、运动成绩、心率等指标进行测试和评定分析,探索女子200m跑最佳的速度分配模式,200m跑的速度变化规律,揭示不同速度结构200m时,运动成绩、心率变化的内部机理。  相似文献   

徽商称雄三百年探密     

叶显恩 《安徽师范大学学报(人文社会科学版)》2008,36(6)

徽商称雄明清商界三百年,主要原因在于:具有深厚的文化底蕴,注重总结经商经验,撰写商业专书,以求从商职业技能的专业化;贾儒结合,程朱理学与王学并尊,因而演化出"官商互济";创建以诚信为本、义利均衡的贾道和独特的营运型式;以及利用其区位优势,抢先占据长三角地利,致力于长途贸易等.  相似文献   

论托管型社区图书馆的办馆模式   总被引：7，自引：0，他引：7  

陈峰 《图书馆杂志》2006,25(2):34-35,40

托管型社区图书馆是新型的社区图书馆办馆模式，具有“委托管理、分馆运作”的体制特点。其建设的现实意义在于建立良好的管理机制，解决社区自行办馆中难以解决的问题；改变“小而全”的办馆模式，为建立地区性公共文献资源共建共享体系奠定基础。  相似文献   

Cultures of running: characteristics and determinants     

Geoffrey Lassalle  Robin Recours  Jean Griffet 《Sport in Society》2019,22(3):342-360

Based on the studies of Mauss (1935 Mauss, M. 1935. “Les techniques du corps.” Journal de Psychologie 32: 271–293. [Google Scholar]) and Bourdieu (1980 Bourdieu, P. 1980. Le Sens pratique. Paris: Editions de Minuit. [Google Scholar]) on the determination of body techniques by culture and social background, this study seeks to describe the rules, dispositions and habits specific to different forms of athletic running. It is based on a sample of 732 athletes, all of them are the members of French athletics clubs, comprising 220 sprinters, 213 half-distance runners and 299 long-distance runners. Sports practices are different depending on sub-culture affiliation, sociological characteristics and forms of commitment. This being said, simple links between variables should not be transformed into causal connections. Before drawing such conclusions, it is important to identify the nature of the sport studied. This shows that middle-distance and long-distance enthusiasts, traditionally classified in the same family, have less, in common, than those practising sprint and middle distance. These results potentially question the methodological groups and sociological interpretations made by researchers and sports science.  相似文献   

康德历史哲学中的先验主义因素     

王平 《合肥联合大学学报》2002,12(4):8-14

康德历史哲学与其先验哲学具有内在的关联性，它既想继续解决康德哲学中自由与必然的冲突，又想打通政治哲学和道德哲学的分立，在这些尝试中，康德哲学流露出新的走向并对后世哲学有着重大影响。然而，康德历史哲学又难以摆脱其哲学固有的矛盾特征，它不可避免地会陷入二律背反的困境。  相似文献   

黑龙江省越野滑雪后备人才现状分析与发展对策研究     

王海  谷化铮  胡文 《冰雪运动》2016,(1):13-17

黑龙江省作为我国越野滑雪项目的优势大省,加强对黑龙江省越野滑雪后备人才培养的研究,已成为保证越野滑雪项目可持续发展的重要举措。借助2022年北京市和张家口市联合举办第24届冬季奥运会的良好契机,改善黑龙江省越野滑雪运动后备人才培养现状,是一个值得深入研究和探讨的课题。通过对黑龙江省2011年～2014年经注册的越野滑雪运动员进行定量与定性分析,深入地研究黑龙江省越野滑雪后备人才的培养现状。结果表明,黑龙江省越野滑雪项目存在运动员人数小幅度萎缩,人才匮乏;青少年基础薄弱,选材困难;场地缺乏、器材昂贵等问题。提出改革越野滑雪后备人才培养体制,借鉴先进的训练模式;优化青少年选材标准,选择科学的评价指标;加快场地建设和器材国产化、量产化;加强教练员运动员队伍建设等对策。以期缩小差距,为促进黑龙江省越野滑雪运动项目的可持续发展提供参考。  相似文献   

Predictive value of ventilatory inflection points determined under field conditions     

Christian Heyde  Hubert Mahler  Kai Roecker  Albert Gollhofer 《Journal of sports sciences》2016,34(9):787-793

The aim of this study was to evaluate the predictive potential provided by two ventilatory inflection points (VIP₁ and VIP₂) examined in field without using gas analysis systems and uncomfortable facemasks. A calibrated respiratory inductance plethysmograph (RIP) and a computerised routine were utilised, respectively, to derive ventilation and to detect VIP₁ and VIP₂ during a standardised field ramp test on a 400 m running track on 81 participants. In addition, average running speed of a competitive 1000 m run (S_1k) was observed as criterion. The predictive value of running speed at VIP₁ (S_VIP1) and the speed range between VIP₁ and VIP₂ in relation to VIP₂ (VIP_SPAN) was analysed via regression analysis. VIP_SPAN rather than running speed at VIP₂ (S_VIP2) was operationalised as a predictor to consider the covariance between S_VIP1 and S_VIP2. S_VIP1 and VIP_SPAN, respectively, provided 58.9% and 22.9% of explained variance in regard to S_1k. Considering covariance, the timing of two ventilatory inflection points provides predictive value in regard to a competitive 1000 m run. This is the first study to apply computerised detection of ventilatory inflection points in a field setting independent on measurements of the respiratory gas exchange and without using any facemasks.  相似文献   

福州市中年人参加健身跑现状的调查研究     

吴深  李海丹 《辽宁体育科技》2016,(1):33-36

采用文献资料法、问卷调查法、数理统计法等,对福州市中年人参加健身跑的情况进行调查分析,明确健身跑运动对中年人身体健康的意义和作用,旨在为中年人更好地进行健身跑运动,提供参考。  相似文献   

How much does lower body strength impact Paralympic running performance?     

E. M. Beckman  M. J. Connick  S. M. Tweedy 《European Journal of Sport Science》2016,16(6):669-676

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.  相似文献   

One hundred and fifty years of sprint and distance running – Past trends and future prospects     

Martin Weiss  Alexandra Newman  Ceri Whitmore  Stephan Weiss 《European Journal of Sport Science》2016,16(4):393-401

Sprint and distance running have experienced remarkable performance improvements over the past century. Attempts to forecast running performances share an almost similarly long history but have relied so far on relatively short data series. Here, we compile a comprehensive set of season-best performances for eight Olympically contested running events. With this data set, we conduct (1) an exponential time series analysis and (2) a power-law experience curve analysis to quantify the rate of past performance improvements and to forecast future performances until the year 2100. We find that the sprint and distance running performances of women and men improve exponentially with time and converge at yearly rates of 4% ± 3% and 2% ± 2%, respectively, towards their asymptotic limits. Running performances can also be modelled with the experience curve approach, yielding learning rates of 3% ± 1% and 6% ± 2% for the women's and men's events, respectively. Long-term trends suggest that: (1) women will continue to run 10–20% slower than men, (2) 9.50 s over 100 m dash may only be broken at the end of this century and (3) several middle- and long-distance records may be broken within the next two to three decades. The prospects of witnessing a sub-2 hour marathon before 2100 remain inconclusive. Our results should be interpreted cautiously as forecasting human behaviour is intrinsically uncertain. The future season-best sprint and distance running performances will continue to scatter around the trends identified here and may yield unexpected improvements of standing world records.  相似文献