Greater fatigability in knee-flexors vs. knee-extensors after a standardized fatiguing protocol     

Giuseppe Coratella  Sidney Grosprêtre  Philippe Gimenez  Laurent Mourot 《European Journal of Sport Science》2018,18(8):1110-1118

The present study aimed to investigate the effects of a standardized fatiguing protocol on central and peripheral fatigue in knee-flexors and knee-extensors. Thirteen healthy men (age: 23?±?3 years; height: 1.78?±?0.09 m; body-mass: 73.6?±?9.2?kg) volunteered for the present study. Maximal voluntary contraction (MVC), Electromyography (EMG) activity, voluntary activation level (VAL) as an index of central fatigue and twitch potentiation as an index of peripheral fatigue were measured before and after the fatiguing protocol. The fatiguing protocol consisted of a 0.6 duty-cycle to exhaustion (6?s isometric contraction, 4?s recovery) at 70% MVC. After the fatiguing protocol, MVC decreased in both (Effect-size (ES)?=?1.14) and knee-extensors (ES?=?1.14), and EMG activity increased in both knee-flexors (ES?=?2.33) and knee-extensors (ES?=?1.54). Decreases in VAL occurred in knee-flexors (ES?=?0.92) but not in knee-extensors (ES?=?0.04). Decreases in potentiation occurred in both knee-flexors (ES?=?0.84) and knee-extensors (ES?=?0.58). The greater central occurrence of fatigue in knee-flexors than in knee-extensors may depend on the different muscle morphology and coupled with a greater tolerance to fatigue in knee-extensors. The present data add further insight to the complicated knee-flexors-to-knee-extensors strength relationship and the mechanisms behind the different occurrence of fatigue.  相似文献   

Linking intellectual capital and knowledge management: an analysis of Kyoto and Detroit     

Denise J?LuethgeEmail author  Philippe?Byosiere 《知识管理研究与实践》2006,4(3):216-226

The successes and failures of Detroit and Kyoto, from intellectual capital and organizational knowledge perspectives, are compared in terms of their similarities and differences as they both strive to maintain an accepted level of social development, global adjustment and urban quality of life. This paper examines the state of development of the four domains of knowledge in Detroit and Kyoto from a historical perspective, applies that analysis to the current state of knowledge and identifies linkages between intellectual capital and knowledge development.  相似文献   

Research on “fortuitous” communication: A review     

Malcolm S. MacLean  Bruce H. Westley 《Educational technology research and development : ETR & D》1955,3(2):119-137

Summary In these two articles we have proposed a schematic theoretical model for the study of communication, one which subsumes both face-to-face and mass communication but is intended as an orientation to a general theory of mass communication. In addition we have used the model as a framework for a review of a part of the literature of mass communication and have attempted a brief assessment of the present state of our knowledge of the field. This paper presents one application of the authors’ conceptual model of the communication process published in the last issue of AVCR. Here they are attempting to order the existing research findings on “fortuitous” communication in relationship to their model. Malcolm S. MacLean, Jr., and Bruce H. Westley are assistant professors of Journalism, The University of Wisconsin.  相似文献   

The exercise of the object: issues in resource reusability and reuse     

Mary Malcolm 《British journal of educational technology : journal of the Council for Educational Technology》2005,36(1):33-41

What is to be captured and how it is to be reused are issues that currently dominate a learning object discourse constructed around the potential for technology to enable learning resource management through the collection and reuse and learning objects. Efficiency and quality gains are promised for institutions that engage with the learning object economy. This account of the issues surrounding current conceptions of the reusability and reuse of learning resources questions whether object‐based resource reuse can simultaneously achieve gains in both areas, and whether a learning object economy will sustain institutional development and diversity for those HEIs that participate in it.  相似文献   

The Role of the Press in the Reform of Higher Education in Tunisia (August 1975‐March 1976)     

Philippe Soulez 《Compare》1987,17(1):61-77

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The Role of Research in Teacher Education     

Malcolm Skilbeck 《欧洲师范教育杂志》1992,15(1-2):23-31

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A conceptual model for communications research     

Bruce H. Westley  Malcolm S. MacLean 《Educational technology research and development : ETR & D》1955,3(1):3-12

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Higher education in a changing environment     

Malcolm Skilbeck 《Tertiary Education and Management》1997,3(2):101-111

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Mapping the Literacy Curriculum: an interactive account of classroom literacies     

Malcolm Reed  Alec Webster  Michael Beveridge 《Changing English: An International Journal of English Teaching》1996,3(2):189-200

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The Location of Higher Education     

Malcolm Tight 《Higher Education Quarterly》1987,41(2):162-183

Location is an important dimension of higher education, even in a small country like England. While part-time courses clearly need to be accessible to their potential students if they are to serve a useful purpose, this is also true, though to a lesser extent, of full-time provision (and many institutions offer both). Widely varying locational strategies have been adopted by institutions of higher education in the past, and the distribution of higher education opportunities remains highly skewed, with university and public sector provision concentrated in particular areas of the country. Greater attention needs to be given to locational considerations in the future planning of higher education if reasonably equal access is to be ensured. Five policy implications of such a strategy are identified - provision should be increased in areas currently under-provided for; institutions should adjust their provision so as to serve a greater regional and local role; part-time provision, particularly at first degree level, should be expanded; mixed forms of distance and face-to-face higher education should be developed; less emphasis should be placed on the residential element in higher education .  相似文献