Could knee joint mechanics during the golf swing be contributing to chronic knee injuries in professional golfers?     

Howie Carson  Jim Richards  Simon G. S. Coleman 《Journal of sports sciences》2020,38(13):1575-1584

ABSTRACT

Full three-dimensional movements and external moments in golfers’ knees and the possible involvement in injuries have not been evaluated using motion capture at high sample frequencies. This study measured joint angles and external moments around the three anatomical axes in both knees of 10 professional golfers performing golf drives whilst standing on two force plates in a motion capture laboratory. Significant differences were found in the knee joint moments between the lead and trail limbs for the peak values and throughout all stages during the swing phase. A significantly higher net abduction moment impulse was seen in the trail limb compared with the lead limb (?0.518 vs. ?0.135 Nms.kg^?1), indicating greater loading over the whole swing, which could contribute to knee lateral compartment or anterior cruciate ligament injuries. A significant correlation (r = ?0.85) between clubhead speed at ball contact and maximum joint moment was found, with the largest correlations being found for joint moments at the top of the backswing event and at the end of the follow-through. Therefore, although knee moments can contribute to high clubhead speeds, the large moments and impulses suggest that they may also contribute to chronic knee injuries or exacerbate existing conditions.  相似文献   

Investigation of Poor Academic Achievement in Children with Duchenne Muscular Dystrophy     

V. J. Hinton  D. C. De Vivo  R. Fee  E. Goldstein  Y. Stern 《Learning disabilities research & practice》2004,19(3):146-154

Duchenne Muscular Dystrophy (DMD) is a neurogenetic developmental disorder that presents with progressive muscular weakness. It is caused by a mutation in a gene that results in the absence of specific products that normally localize to muscle cells and the central nervous system (CNS). The majority of affected individuals have IQs within the normal range, generally with lower verbal than performance IQ scores. Prior work has demonstrated selective deficits on tests of verbal span and immediate memory. For the current study, 26 boys with DMD (and normal intellectual function) and their unaffected siblings were evaluated. Paired comparisons demonstrated that the children with DMD had significantly poorer academic achievement scores than their siblings, even though their vocabulary levels and home and educational environments were comparable. Children with DMD also had more behavioral concerns, physical disabilities, and poorer verbal memory spans. Linear regression indicated that behavioral concerns, executive function, and physical disability did not contribute substantially to academic performance, whereas performance on verbal span did. DMD presents with a selective developmental aberration in verbal span that has wide‐ranging consequences on learning skills.  相似文献   

我国体育用品业未来发展走向初探   总被引：16，自引：0，他引：16  

叶德初  王蓉 《武汉体育学院学报》2001,35(5):39-41

通过对我国体育用品市场需求量,以及体育用品业存在的问题和面临的挑战的分析,认为产业升级是我国体育用品业未来发展的主要走向.  相似文献   

全民健身与普通高校体育教育管理   总被引：8，自引：0，他引：8  

商勇  孙占光  娄德玉 《中国体育科技》2001,37(1):39-41

本研究运用A.E.SAATY教授提出的AHP层次分析法，对高校体育教育管理目标体系进行系统分析，明确了普通高校体育教育管理体系，建立了判断矩阵，并提出了该管理系统第3层目标的19个构成因素。  相似文献   

What Really Happens During a Paired Reading Project?     

Sam Winter 《British Journal of Special Education》1991,18(1):20-24

Sam Winter, formerly an educational psychologist working in Hartlepool, is now lecturer in the Department of Education, Hong Kong University. He is currently conducting an inquire into paired reading as a method of helping children who experience difficulties in learning to read.  相似文献   

体育明星作形象代言人推行品牌产品的战略效应分析   总被引：2，自引：0，他引：2  

乐仁油  王丹虹  庄德  徐志雄 《哈尔滨体育学院学报》2005,23(6)

运动鞋企业是晋江经济的支柱,其发展对晋江经济和体育产业的发展有着重要的意义。值此第七届晋江(国际)鞋业博览会之际,运用文献资料、调查访问、观察及网上查询等研究方法,并运用经济学、广告学等相关学科的一些原理,分析了福建晋江运动鞋企业聘请体育明星作形象代言人推行品牌建设的现状及存在的一些主要问题,并提出了进一步推动晋江运动鞋企业品牌建设的一些对策和建议,以便给当地政府及相关的决策者提供一些理论参考。  相似文献   

每球得分制条件下影响一攻、防反关系的主要因素的研究——兼谈中国女排与世界女排的比较   总被引：3，自引：0，他引：3  

张桂青  张德广  钟霖 《中国体育科技》2002,38(5):27-31

通过对 1998年世界女子排球锦标赛、1999年世界杯女子排球赛与 1999年、2 0 0 0年全国女子排球甲级联赛的研究 ,对每球得分制条件下影响一攻和防反的主要因素进行论证。结果表明 :发球、一传效果、防守效果、不同风格打法和运动员心理素质是影响每球得分制条件下一攻、防反效果的主要因素 ;与世界强队相比 ,中国女子排球队在后排进攻方面存在着显著性差异  相似文献   

体育教学与学生创新能力的培养   总被引：13，自引：0，他引：13  

许德顺 《体育学刊》2002,9(6):100-101

从创新能力形成与发展的理论，阐述体育教学中创新能力的培养基本方法与途径。  相似文献   

Are copy editors an endangered species?     

Simon Dunton  Audrey D. Melkin 《Learned Publishing》2003,16(4):309-315

  相似文献   

Comment & Response     

Matthew James Simon  Mary K. Bolin 《The Journal of Academic Librarianship》2008,34(6):551-552

  相似文献