Examining the influence of grip type on wrist and club head kinematics during the golf swing: Benefits of a local co-ordinate system     

Howie J. Carson  Jim Richards  Bruno Mazuquin 《European Journal of Sport Science》2019,19(3):327-335

Wrist movements have been identified as an important factor in producing a successful golf swing, with their complex motion influencing both club head velocity and orientation. However, a detailed analysis of wrist angles is lacking in the literature. The purpose of this study was to determine kinematics across wrists and club head characteristics during the golf swing under weak, neutral and strong grip conditions. Twelve professional male golfers executed 24 shots using a driver under three grip conditions. A six degrees of freedom analysis of the hand with respect to the distal forearm was performed using a 10-camera three-dimensional motion capture system. Differences in joint angles were explored using repeated measures ANOVAs at key swing events (onset, top of backswing and impact), in addition club head velocity and clubface angle at impact were also explored. Main findings revealed significant differences in flexion/extension and internal/external rotation for both wrists at all swing events, whereas fewer significant interactions were found in ulnar/radial deviation across grips for both wrists at all events. Clubface angle only differed significantly between the weak and the strong and neural grips, presenting a more ‘open’ clubface to the intended hitting direction. This study is the first to explore tri-planar wrist movement and the effect of different grips, such analysis has implications for coaching knowledge and practice and should inform future research into different aspects of skill, technique analysis and may inform injury mechanisms/prevention.  相似文献   

Changing the conception of mathematical knowledge in intellectually able,math avoidant women     

Dorothy D. Buerk Ed.D. 《Roeper Review》2013,35(4)

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Letters to the editor     

Alex L. Savitz  Kyle R. Carter Ph.D.  Susan Kontos Ph.D.  Dorothy Dodd Ed.D. 《Roeper Review》2013,35(3)

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The public library and its readers: a comparison of the aims and objectives of the public library in developed and developing countries     

Dorothy Anderson 《International Information and Library Review》2013,45(4):433-442

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Open space     

Dorothy Knopper 《Roeper Review》2013,35(2)

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Legislatiue news     

Dorothy Sisk 《Roeper Review》2013,35(2)

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As Long As There Is Beauty     

Dorothy Tyrrel 《The Educational forum》2013,77(4)

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Sunset by the South Shore     

Dorothy Lee Richardson 《The Educational forum》2013,77(1)

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For My Mother     

Dorothy Lee Richardson 《The Educational forum》2013,77(2)

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Towards an adolescent friendly methodology: accessing the authentic through collective reflection     

Mary Keeffe  Dorothy Andrews 《International Journal of Research & Method in Education》2015,38(4):357-370

The re-emergence of student voice presents a challenge to schools and researchers to become more responsive to the voice of adolescents in education and in research. However, the poor articulation of the nature of student voice to date is confirmation of the complex and important nature of the personal advocacy and human agency that is involved in all student voice activities. This lack of clarity leads to interpretations of student voice that range in authenticity from token to active and meaningful (Hart, R. 1997. Children's Participation: The Theory and Practice of Involving Young Citizens in Community Development and Environmental Care. Earthscan Publications. London: UNICEF). Researchers who are guided by more traditional methodologies may implement methods that are appropriate for adults yet are not sensitive to the needs and interests of the young person whose perspectives are usually the focus of the research. This research found that while an advocacy and empowerment worldview supports student voice research, adolescents also prefer a methodology that is agentic, socially based, reflective and embodied (Dempster, N., A. Lizzio, M. Keeffe, J. Skinner, and D. Andrews. 2010. “The Contributions of Research Design and Process Facilitation in Accessing Adolescent views of Leadership.” Leading and Managing 16 [2]: 77–89). Adolescent perspectives on research processes and methods are valuable in helping researchers to choose more responsive approaches to sharing understandings with adolescents, so that research designs may be challenging, meaningful and rewarding for all participants.  相似文献