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   

Oil Spill Impacts: Taxonomic and Ontological Approaches     

Pauline A. Cochrane 《Cataloging & classification quarterly》2016,54(8):617-619

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Multiple components of fitness improved among overweight and obese adolescents following a community-based lifestyle intervention     

Erin K. Howie  Joanne A. McVeigh  Rebecca A. Abbott  Tim S. Olds  Leon M. Straker 《Journal of sports sciences》2016,34(16):1581-1587

Fitness is an important component of health, and obese adolescents regularly have poor fitness. Unfortunately, few have assessed the impact of community-based lifestyle interventions on multiple components of fitness. The purpose of this study was to assess the impact of participation in a community-based intervention involving adolescents and parents on multiple components of fitness of obese adolescents. In a within-subject, waitlist controlled clinical trial with 12 months follow-up in Western Australia, participants (n = 56) completed multiple fitness measures at baseline, immediately prior to beginning an 8-week intervention and at 3, 6 and 12 months during a maintenance period. Performance on the shuttle walk was improved immediately post-intervention (increase of 42.8 m, 95% CI: 7.5, 78.2) and at 12 months post-intervention (increase of 44.6 m, 95% CI: 1.3, 87.8) compared with pre-intervention. Muscle performance of quadriceps and deltoids were improved post-intervention (increase of 1.1 (95% CI: 0.1, 2.1) kg · F and 1.0 (0.02, 2.1) kg · F, respectively) and all muscle performance measures were improved at 12 months following the intervention. There were no changes in waist circumference. A community-based lifestyle programme such as Curtin University’s Activity, Food and Attitudes Program (CAFAP) may be a viable strategy for improving fitness in overweight adolescents.  相似文献   

The fourth dimension: A motoric perspective on the anxiety–performance relationship     

Howie J. Carson  Dave Collins 《International review of sport and exercise psychology》2016,9(1):1-21

This article focuses on raising concern that anxiety–performance relationship theory has insufficiently catered for motoric issues during, primarily, closed and self-paced skill execution (e.g., long jump and javelin throw). Following a review of current theory, we address the under-consideration of motoric issues by extending the three-dimensional model put forward by Cheng, Hardy, and Markland (2009) (‘Toward a three-dimensional conceptualization of performance anxiety: Rationale and initial measurement development, Psychology of Sport and Exercise, 10, 271–278). This fourth dimension, termed skill establishment, comprises the level and consistency of movement automaticity together with a performer's confidence in this specific process, as providing a degree of robustness against negative anxiety effects. To exemplify this motoric influence, we then offer insight regarding current theories’ misrepresentation that a self-focus of attention toward an already well-learned skill always leads to a negative performance effect. In doing so, we draw upon applied literature to distinguish between positive and negative self-foci and suggest that on what and how a performer directs their attention is crucial to the interaction with skill establishment and, therefore, performance. Finally, implications for skill acquisition research are provided. Accordingly, we suggest a positive potential flow from applied/translational to fundamental/theory-generating research in sport which can serve to freshen and usefully redirect investigation into this long-considered but still insufficiently understood concept.  相似文献   

I can do it—We can do it together     

Pauline Davey Zeece 《Early Childhood Education Journal》1994,22(2):34-37

She teaches coures in child development and has a special interest in literature and early childhood education  相似文献   

Forming and fostering friendships in early childhood     

Pauline Davey Zeece 《Early Childhood Education Journal》1995,23(1):45-48

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Issues Arising from the Introduction of Tertiary Education Enterprise Activities — Examples from TAFE     

Pauline Mageean 《高等教育研究与发展》1990,9(2):123-132

This paper has been written for those concerned with tertiary education enterprises whether as developers of saleable intellectual property (such as inventions, ideas, resources, concepts), providers of a course or other service, as negotiators of contracts, marketers of educational services or as policy developers concerned with the overall organisation of tertiary education and the place and purposes of enterprise activities within this. It assumes that enterprise activities are now and will be in the future, an important feature of tertiary education in Australia. It discusses a number of potential and existing conflicts and tensions of relevance to those involved in these activities and provides examples of how certain TAFE institutions have responded to these.  相似文献   

Group time treasures: Implications for learning     

Pauline Davey Zeece  Marcia Corr 《Early Childhood Education Journal》1989,17(1):32-34

Meaningful group times have been a hallmark of quality early childhood programs for many years. Stimulating group experiences present a wealth of opportunities for everyone involved. Adults are better able to monitor children's skills and enjoy their ongoing growth. Group activities also may set the stage for an abundance of adventures as young children grow and learn in all areas of their development (Bredekamp, 1986).Pauline Davey Zeece and Marcia Corr are at the Department of Human Development and the Family, University of Nebraska-Lincoln in Lincoln, Nebraska.  相似文献   

From the Washington to the Post-Washington Consensus: The influence of international agendas on education policy and practice in Malawi     

Pauline Rose 《Globalisation, Societies & Education》2003,1(1):67-86

Education is receiving ever-increasing priority in the post-Washington consensus era, which views education as both a means to and end of development. However, justification for the attention given to education continues to be centrally focused on the notion of human capital. By consequence, marketisation and privatisation of education are becoming increasingly significant. With the World Bank and WTO joining forces to create a vision for a 'global education industry', emphasis is placed on free trade in educational goods and services. The paper examines critically the implications of this international education agenda for developing countries, focusing on the experience of Malawi.  相似文献   

Private and Public Schooling in Ghana: A Census and Comparative Survey     

James Tooley  Pauline Dixon  Isaac Amuah 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2007,53(4):389-415

A census and survey of schools in the district of Ga, Ghana, explored the nature and extent of private education, and compared inputs to public and private schooling. Three quarters of all schools found were private, with almost as many unregistered private as government schools. Several important differences between registered and unregistered private schools were noted, including age, fee levels charged, teacher salaries and class size. A range of inputs, such as teacher activity, availability of desks, chairs, libraries, toilets and drinking water, were used to compare inputs to government, unregistered and registered private schools. Some conclusions are explored about the potential role for the private sector in helping meet “education for all” targets.  相似文献