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1.
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
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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。 相似文献
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Donald D. Deshler Jean B. Schumaker B. Keith Lenz Janis A. Bulgren Michael F. Hock Jim Knight Barbara J. Ehren 《Learning disabilities research & practice》2001,16(2):96-108
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. 相似文献
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Richards PS 《Minerva》1988,26(2):177-198
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Albert Martin Susanne Bartscher-Finzer Anne Richards 《Publishing Research Quarterly》2018,34(1):69-88
Our study compares the motivations of Australian and German book publishers. The results demonstrate remarkable similarities, but also a significant difference regarding the effects of the publishers’ self-concept. In the German case the publishers with a dominant economic orientation are more proactive than the publishers with a dominant cultural orientation. In the Australian case, this correlation does not exist. The same difference holds for the relationship between the economic orientation and extrinsic motivation. We discuss these results and examine empirical evidence and theoretical suggestions to explain the differing findings. The data stem from surveys conducted in the two countries with responses of 196 (Germany) and 54 publishers (Australia). 相似文献
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Hazel Richards 《Support for Learning》2021,36(2):204-221
In England, Education and Health Care Plans (EHCPs) created changes for SENCOs, including those working in private, voluntary and independent (PVI) early years settings. Such SENCOs hold, as a minimum, a relevant Level-3 qualification, with subsequent training and support being optional, varied and sometimes difficult to access. This situation has implications for EHCP implementation and for the roles and responsibilities of SENCOs because effective realisation of the joint working, early identification and intervention prioritised in EHCPS require power, knowledge and skills. SENCOs from one Local Authority in England participated in this mixed-methods research. Identity theory and Bronfenbrenner's bio-ecological theory were applied to analyse the macro through to micro level influences. This revealed seven key influences: information and resources; ethos and support; quality of evidence; relationships; knowledge and skills; purpose and outcomes. This paper presents the manifestation of these in the experience of eight Early Years SENCOs working PVI settings. 相似文献