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Panagiotis Pappas Charilaos Tsolakis Athanasia Smirniotou Jean-Benoit Morin 《Sports biomechanics / International Society of Biomechanics in Sports》2014,13(4):391-399
The aim of this study was to determine the intra-participant variabilities (i.e. intra-day and inter-day reliabilities) in leg and vertical stiffness, as well as related kinematic parameters, during treadmill running using the sine-wave method. Twenty-two healthy men ran on a treadmill at 4.44 m/s, and the flight and contact times were measured with a high-speed video camera. Three 30-s running bouts with 2-min inter-bout rests were performed to examine the intra-day reliability, and single 30-s running bouts on three separate days with 24- to 48-h inter-bout intervals were performed to examine the inter-day reliability. The reliability statistics included repeated-measure analyses of variance, average inter-trial correlations, intra-class correlation coefficients (ICCs), Cronbach's α reliability coefficient, and the coefficient of variation. Both leg and vertical stiffness produced high ICCs within 0.972 and 0.982, respectively, and between 0.922 and 0.873 days, respectively. High values were also observed for all of the reliability coefficients. Similar results were found regarding contact time, flight time, step length, and step rate. It was concluded that the measurements of leg and vertical stiffness, as well as related kinematic parameters, obtained using the sine-wave method during treadmill running at 4.44 m/s, were highly reliable, both within and across days. 相似文献
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Athanasia Chatzifotiou 《Curriculum Journal》2013,24(3):289-301
The National Curriculum of primary schools in England and Wales sets out the statutory and non-statutory requirements for teachers. It describes the aims and goals it aspires to achieve and the content of its subjects. In this article I suggest that the statutory and non-statutory guidelines of the National Curriculum present conceptually different goals in relation to the holistic development of a student. The first section discusses the two basic aims of the curriculum, their recommended implementation and the implications they have upon the curriculum. I specifically emphasize that ‘statutory’ guidelines represent information-based knowledge and that the ‘nonstatutory’ guidelines treat value-based issues. This division of roles creates difficulties in implementing the non-statutory part of the curriculum. In the second section I demonstrate this division by using education for sustainable development as a focal point. I conclude by highlighting important issues for education and, more particularly, for education for sustainable development. 相似文献
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Athanasia Dakopoulou 《Globalisation, Societies & Education》2009,7(1):83-93
Educational research over the last decades has been preoccupied with the way the global discourse has been employed in national educational policy making. Examining a case of teachers’ continuing education in Greece, the paper focuses on the way this global discourse has been selectively appropriated by national agents.
Using data of focused interviews with key agents and the content analysis of policy documents, the paper examines the institutionalisation process arguing that (Greek) education policy is not always subject to rational planning, or global imperatives, but involves informal networks which interact parasitically inside formal policy networks to further sectoral interests. 相似文献
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Apostolos S. Theodorou Vassilios Panoutsakopoulos Timothy A. Exell Polyxeni Argeitaki Giorgos P. Paradisis Athanasia Smirniotou 《Journal of sports sciences》2017,35(4):346-354
The aim of this study was to investigate the relative influence of step length (SL) and step frequency (SF) on step velocity (SV) during the approach run of high-level long jumpers and to quantify the asymmetry of these step characteristics. Spatiotemporal data of the approach run were collected during national competition from 10 long jumpers (age 26.2 ± 4.1 years, height 1.84 ± 0.06 m, mass 72.77 ± 3.23 kg, personal best performance 7.96 ± 0.30 m). Analyses were conducted for total approach, early approach and late approach. For the total approach 4/10 athletes were SF reliant and 6/10 athletes favoured neither characteristic. At the early approach, 3/10 athletes were SF reliant and 7/10 athletes favoured neither. During late approach 2/10 athletes demonstrated SL reliance, 7/10 athletes were SF reliant and 1/10 athletes favoured neither. Four athletes displayed significant asymmetry for SL and three for SF. However, no athletes demonstrated significant asymmetry for SV indicating that the asymmetrical demands of take-off do not have a marked influence on step characteristic asymmetry, probably due to the constraints of the event. Consideration should be given to the potentially conflicting demands between limbs for individual athletes. 相似文献
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Athanasia Chatzifotiou 《Curriculum Journal》2013,24(4):367-381
This article reports the results of a research study on the impact of environmental education (EE) upon English primary school teachers, and it then discusses the findings of the study in relation to education for sustainable development, as EE is considered one of the two precursors of education for sustainable development. The article begins by considering the development of EE in the English national curriculum of primary schools and then briefly outlines and reports two major findings of the study, comparing them against the new context of education for sustainable development. Overall, the article demonstrates how EE, the national curriculum and teachers have interacted with each other, while arguing that there seems to be a parallel course among education for sustainable development and EE in the national curriculum, with no apparent crossroad to link the two and explain how education for sustainable development is partly based on EE as well. 相似文献
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Flora Panteli Athanasia Smirniotou Apostolos Theodorou 《Journal of sports sciences》2016,34(12):1116-1123
The purpose of the study was to investigate possible changes at step pattern and technical performance of the long jump approach run in seven young long jumpers by modifying the performance environment (long jump runway versus track lane) and the nested actions (run-through with take-off versus complete long jump). Our findings suggest that the step pattern and technical aspects of the approach run are affected by environmental context and nested task constraints. In terms of environmental context, it appears that practising the training routine of run-through followed by take-off on the long jump runway allows athletes to simulate competition conditions in terms of step regulation and technical efficacy. The task of run-through followed by take-off on the track lane failed to initiate visual perception, step regulation and technical efficiency at the steps preceding the instant of take-off. In terms of nested task constraints, when run-ups were followed by jump for distance instead of only a take-off, a higher level of consistency was achieved and step regulation was based on perception–action coupling. Practising long jump run-up accuracy at a setting not containing the informational elements of the performance environment fails to develop the key elements of the skill. 相似文献
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Athanasia Chatzifotiou 《Environmental Education Research》2005,11(5):503-523
In this essay the author uses a sample of Greek primary school teachers to investigate environmental education awareness in three counties of northern Greece. The author begins by outlining the status of environmental education in Greek primary schools. The author then states the study’s rationale by defining the term ‘awareness’ and moves on to discuss the methodological considerations that guided the project. This is followed by a presentation of the study’s findings. Here the author shows that environmental education awareness is influenced by several philosophical notions about nature and that its implementation is mediated by both local and state factors. This then allows the author to offer recommendations for enhancing the current practices of environmental education and discuss future perspectives for it in Greece. 相似文献
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