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Mhairi Keil Julia O. Totosy de Zepetnek Katherine Brooke-Wavell 《European Journal of Sport Science》2016,16(1):65-71
The purpose of this study was to assess the reproducibility of body composition measurements by dual-energy X-ray absorptiometry (DXA) in 12 elite male wheelchair basketball players (age 31 ± 7 years, BMI 21 ± 2 kg/m2 and onset of disability 25 ± 9 years). Two whole body scans were performed on each participant in the supine position on the same day, using Lunar Prodigy Advance DXA (GE Lunar, Madison, WI, USA). Participants dismounted from the scanning table and were repositioned in-between the first and second scan. Whole body coefficient of variation (CV) values for bone mineral content (BMC), fat mass (FM) and soft tissue lean mass (LTM) were all <2.0%. With the exclusion of arm FM (CV = 7.8%), CV values ranged from 0.1 to 3.7% for all total body and segmental measurements of BMC, FM and LTM. The least significant change that can be attributed to the effect of treatment intervention in an individual is 1.0 kg, 1.1 kg, 0.12 kg for FM, LTM, and BMC, respectively. This information can be used to determine meaningful changes in body composition when assessed using the same methods longitudinally. Whilst there may be challenges in the correct positioning of an individual with disability that can introduce greater measurement error, DXA is a highly reproducible technique in the estimation of total and regional body composition of elite wheelchair basketball athletes. 相似文献
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Kristine Toohey Clare MacMahon Juanita Weissensteiner Alana Thomson Chris Auld Anthony Beaton 《Sport in Society》2018,21(2):356-375
AbstractEffective sport talent identification and development (TID) programmes are integral to a nation’s success in international sport. Using a transdisciplinary approach that involved sport practitioners and researchers with diverse theoretical perspectives, we investigated TID factors in four Australian sports (Australian rules football, cricket, kayaking and tennis). A transdisciplinary approach allowed us to isolate and explore a range of factors critical to successful sport TID. This methodological article explores how this project moved TID research beyond its paradigmatic, quantitative, sport science lens and advanced knowledge and practice in TID from both theoretical and applied perspectives. The use of a transdisciplinary approach in future TID research is recommended. 相似文献
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This study examined outcomes of a supervision practicum in which graduate students supervised under-graduates in teacher education during microteaching activities and studied their supervisory behavior using videotape replays of conferences with teacher-trainees. Pre- and post-measures were used to assess changes in conference style as reflected by verbal behavior, and changes in the relationship between conference dialogues and subsequent teaching behavior. Supervisors shifted toward more indirect-supportive conference styles. Conclusions were that videotaped microteaching can be adapted to improve supervisor education by 1.) providing realistic supervisory experience, 2.) serving as a vehicle to modify the conference behavior of potential supervisors, and 3.) serving as a research vehicle for accumulating new knowledge and testing current theories concerning the process of supervision. 相似文献
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Ann Beaton Francine Tougas Natalie Rinfret Nathalie Huard Marie-No?lle Delisle 《European Journal of Psychology of Education - EJPE》2007,22(3):291-306
Two studies were conducted to test the link between numerical distinctiveness, stereotype threat and mathematical performance
among women. In the first study, stereotype threat was measured with a stereotype activation task. Women in a solo, non-solo
or control condition completed word fragments and a mathematical activity. Solo women, rather than their non-solo counterparts
showed mathematical performance deficits. Evidence did not support the mediating role of stereotype activation. In the second
study, stereotype anxiety was assessed. According to analyses, solo women reported greater stereotype-related anxiety than
non-solo women. A link between stereotype anxiety and mathematical performance deficits was also uncovered. Finally, mathematical
underperformance was associated with greater interest in feminine activities. Strategies to buffer the effects of stereotype
threat are discussed. 相似文献
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We discuss the ability to perform fluorescent immunocytochemistry, following cell fixation, using a microfluidic array of primary, nonadherent, single CD34+ stem cells. The technique requires small cell samples and proceeds with no cell loss, making it well-suited to monitoring these rare patient-derived cells. The chip allows us to correlate live cell dynamics across arrays of individual cells with post-translational modifications of intracellular proteins, following their exposure to drug treatments. Results also show that due to the microfluidic environment, the time scale of cell fixation was significantly reduced compared to conventional methods, leading to greater confidence in the status of the protein modifications studied. 相似文献
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Fran Beaton 《International Journal for Academic Development》2017,22(1):19-30
AbstractPart-time teachers form a growing proportion of the global Higher Education (HE) workforce. Their backgrounds can vary from Graduate Teaching Assistants (GTAs) teaching for the first time, to practitioners bringing workplace experience into HE and sessional teachers, all with differing professional development needs. This paper builds on previous research to consider structures and practices promoting sustainable, effective professional development for part-timers, to propose proactive holistic professional development, and raise institutional awareness of the challenges of reaching part-timers. A case study exploring the lived experiences of part-time staff illustrates key features of part-timers’ preparation for their current work and future aspirations. 相似文献
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A key assumption underpinning formative assessment strategies is that individual pupils must be fully involved in the process. While such engagement and attention on the individual is important, studies suggest that teachers do not always readily engage with formative assessment as a reciprocal process which involves pupils. Additionally, a focus on individual differences between pupils can be problematic if the work that is set for some is differentiated to such an extent that they are not able to participate in classroom activities with others. Inclusive pedagogy is an approach to teaching and learning that attends to individual differences between pupils but avoids the marginalisation that can occur when pedagogical responses are designed only with individual needs in mind. Using participant observation and video footage from three classrooms that captured ‘learning moments’ identified by teachers and pupils, this study documents how the professional craft knowledge of teachers develops as they learn to use what their pupils have to say about learning in the context of whole class teaching. By concentrating on the findings from one site, this paper shows how teachers can use what they learn from listening to pupils’ self-assessments of their learning in ways that meet the standard of inclusive pedagogy. 相似文献
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Robert J. Mislevy Albert E. Beaton Bruce Kaplan Kathleen M. Sheehan 《Journal of Educational Measurement》1992,29(2):133-161
The multiple-matrix item sampling designs that provide information about population characteristics most efficiently administer too few responses to students to estimate their proficiencies individually. Marginal estimation procedures, which estimate population characteristics directly from item responses, must be employed to realize the benefits of such a sampling design. Numerical approximations of the appropriate marginal estimation procedures for a broad variety of analyses can be obtained by constructing, from the results of a comprehensive extensive marginal solution, files of plausible values of student proficiencies. This article develops the concepts behind plausible values in a simplified setting, sketches their use in the National Assessment of Educational Progress (NAEP), and illustrates the approach with data from the Scholastic Aptitude Test (SA T). 相似文献