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Interaction of wrestling shoe and competition surface: effects on coefficient of friction with implications for injury 总被引:1,自引:0,他引:1
Newton R Doan B Meese M Conroy B Black K Sebstianelli W Kramer W 《Sports biomechanics / International Society of Biomechanics in Sports》2002,1(2):157-166
The purpose of this study was to determine whether there is a significant difference in the co-efficient of friction (Fc) between old versus new wrestling shoes and mats and to investigate the effect of perspiration. Fc was measured by dragging a weighted shoe over a wrestling mat surface and measuring the vertical and horizontal forces produced. Three different shoe conditions were assessed over two mat types for both wet and dry conditions for a total of 12 conditions. To simulate the wet condition, saline solution was smeared over the surface of the mat. There was a significant effect of shoe, mat, and wet/dry conditions. In addition, significant interactions of shoe by mat, shoe by dry/wet, and mat by dry/wet were observed. Overall, Fc was 36% higher for the new wrestling mat compared to the old wrestling mat. Application of the saline solution reduced Fc by 14% compared to the dry condition. Comparison of the mean Fc for all three shoe types revealed the Fc for the older design shoe was 23% to 28% lower than the brand new shoe and the worn newer design, respectively. A high Fc, such as in the new mat/new shoe combination, has the potential to increase the risk of knee and ankle injuries by fixing the foot more securely to the ground. 相似文献
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William F. Shughart 《Journal of Cultural Economics》2000,24(4):347-347
Authors Index
Author Index, Volume 24 相似文献167.
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Tertiary Education and Management - This study explored the construct of longevity for education deans and the perceived impact that endurance in the role exerts on the welfare of schools and... 相似文献
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AbstractThis article examines the ACPA/NASPA Competencies as functional protocol of the neoliberal state. Described as ‘not a checklist’, Competencies structure rubrics, conferences, jobs, and performance as static, indicative of a power/knowledge rooted in protocol. We utilize post qualitative thinking, specifically poetics, to create a series of experimentations (in)tension with Competencies. This micropolitical practice disrupts protocol, opening imaginative space for subversion, movement, and becoming?~?professional. 相似文献
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