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

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.     

影响田径运动员心理变化的因素及其心理训练的方法

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会计培训工作面临的机遇和挑战

随着社会主义市场经济的发展,会计工作出现了许多新情况、新问题。会计作为经济管理的重要组成部分,必须抓住机遇,适应新形势要求,提高会计工作质量,必须认清会计工作面临的机遇,从培训入手,更好地为社会主义市场经济服务,加速我国会计现代化的进程。     

体育舞蹈在高校素质教育中的作用

21世纪是高科技飞跃发展的知识经济社会，人才的竞争日趋激烈。因此推行素质教育是高等学校面向21世纪的重要任务。体育舞蹈是融体育、音乐、舞蹈为一体的新型体育课程，对全面培养大学生综合素质、增强大学生生理、心理健康、发展个性、审美能力的提高具有重要作用。     

素质教育思想观念与高校体育

采用文献综述和分析法，针对高等教育培养人才，实施素质教育的思想观念，分析了素质及素质教育的基本内涵，探析了体育与素质，高等学校体育与素质教育接轨，素质教育与创新教育以及高等学校体育实施素质教育应突出创新素质的培养等问题，以此作为面向21世纪我国普通高等学校体育课程教材改革与构建研究的理论依据之一。     

Ensuring Content‐Area Learning by Secondary Students with Learning Disabilities

Three factors tied with secondary student success in content‐area reading are demonstrated: (a) validated teacher‐focused and student‐focused interventions, (b) integrated and comprehensive service delivery systems, and (c) well‐designed, data‐based professional developmental programs. Difficult challenges face secondary students with LD and their teachers with regard to these students’ participation and success in required general education classes. Recently, instructional methods and materials have been developed and validated for promoting these students’ success. Some of them focus on how general education teachers plan and teach their content‐area courses; others focus on giving students the strategies they need to respond independently to the demands of their courses. This article describes these instructional methods, a service‐delivery model for implementing these interventions in secondary schools, and professional‐development mechanisms and administrative support that must be in place for the model to be maintained effectively.     

高校新生的挫折教育

大学生的心理卫生和心理健康问题 ,一直是高等学校工作的一个难点。本文将对高校新生心理挫折产生的原因进行分析 ,提出对高校新生进行挫折教育的具体措施     

加强双拥共建 提高军训质量

军事课程是普通高校大学生的必修课。新时期,部队战备任务和日常训练任务十分繁重,如何依靠部队支持,提高学生军训质量,保证安全,几年来,我院作了积极的实践和探索,取得了一定的成效。     

知信行融合统一的发展性体育教育模式的理论建构与实施评价

依据儿童发展理论、健康教育理论、体育教育理论,结合我国基础教育《体育与健康课程标准》,构建出“知信行融合统一的发展性体育教育模式”,并就该模式的涵义特点、理论基础、教育目标、实施办法、评价方式等问题进行了较为详细的探讨。