Comparison of Female Athlete Triad Coalition and RED-S risk assessment tools     

Kristen J. Koltun  Nicole C. A. Strock  Emily A. Southmayd  Andrew P. Oneglia  Nancy I. Williams  Mary Jane De Souza 《Journal of sports sciences》2013,31(21):2433-2442

ABSTRACT

The Female Athlete Triad Coalition (Triad Coalition) and Relative Energy Deficiency in Sport (RED-S) consensus statements each include risk assessment tools to guide athlete eligibility decisions. This study examined how these tools categorized the same set of individuals to an overall risk factor score and qualitatively compared athlete eligibility decisions resulting from each tool. Exercising women (n = 166) with complete screening/baseline datasets from multiple previously conducted studies were assessed. Data used for risk assessment included: anthropometric measurements, dual-energy x-ray absorptiometry scans, exercise and health status surveys, and two disordered eating questionnaires (Three Factor Eating Questionnaire and Eating Disorder Inventory). Individuals were scored on each tool and subsequently categorized as either fully cleared, provisionally cleared, or restricted from play. Based on the Triad Coalition tool, 25.3% of subjects were classified as fully cleared, 62.0% as provisionally cleared, and 12.7% as restricted from play. Based on the RED-S tool, 71.7% of subjects were classified as fully cleared, 18.7% as provisionally cleared, and 9.6% as restricted from play. The Triad Coalition and RED-S tools resulted in different clearance decisions (p < 0.001), with the Triad Coalition tool recommending increased surveillance of a greater number of athletes.  相似文献   

An experimental,video-based investigation into the motivating impact of choice and positive feedback among students with different motor competence levels     

An De Meester  Femke Van Duyse  Nathalie Aelterman  Gert-Jan De Muynck  Leen Haerens 《Physical Education & Sport Pedagogy》2020,25(4):361-378

ABSTRACT

Background: Research stemming from Self-Determination Theory (SDT) shows that physical education (PE) teachers who endorse an autonomy-supportive and structuring motivating style positively affect students’ motivation, engagement and learning. Choice provision and positive feedback are two concrete strategies that are part of an autonomy-supportive and structuring style, respectively. While the benefits of choice provision and positive feedback have been shown in contexts other than PE, evidence in the specific context of PE is much scarcer. Grounded in SDT and relying on experimental design, the present study sought to examine the effects of choice provision and positive feedback on students’ motivational experiences in PE, and whether these effects were moderated by students’ actual motor competence (AMC).

Method: A sample of 277 students (41% boys, Mage?=?12.78 years) was randomly assigned to one of four experimental conditions (2?×?2 design). Prior to the experimental manipulation, participants’ AMC was measured with the Test of Gross Motor Development second edition. Participants then watched a videotaped PE lesson, in which the provision of choice (choice – no choice) and type of feedback (corrective feedback – positive and corrective feedback) were manipulated. Participants were asked to imagine how they would feel being a student in the displayed lessons. After watching the video, they completed validated questionnaires on their (1) anticipated need satisfaction and frustration and (2) autonomous and controlled motivation. MANOVAs were conducted to investigate the differences between the experimental groups in terms of anticipated need satisfaction, need frustration and motivation. Multiple linear regression analyses were used to examine the potential moderating role of AMC.

Findings and conclusions: The benefits of choice provision were clearly shown with students in the choice condition anticipating significantly more autonomy, competence and relatedness satisfaction and autonomous motivation, while they anticipated significantly less autonomy and relatedness frustration when compared to students in the no choice condition. Similarly, the addition of positive feedback to corrective feedback yielded clear benefits, with lower averages in anticipated need frustration found among students who watched the videos in which positive feedback was added to corrective feedback. No support was provided for a synergetic motivational effect between choice and positive feedback. Overall, the present findings show the importance of offering choice and providing positive feedback to motivate students in PE, with positive effects being present for all students independent of their initial AMC levels. Although few interaction effects were found, lowly motor competent students benefited even more from receiving positive feedback than highly motor competent students. The findings of this study are important to take into account in PE teacher education programs and professional training programs for PE teachers about how to teach in a (more) motivating way.  相似文献   

Sisters in crime revisited: bringing gender into criminology     

Stacy De Coster 《Journal of Criminal Justice Education》2018,29(2):313-316

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The myplace4u Platform Project: A Tool for Place Branding and the Promotion of Literature     

Christine Evain  Chris De Marco 《Publishing Research Quarterly》2016,32(2):103-112

An expansion of the eZoomBook (eZB) platform, the ‘myplace4u’ project was designed for place branding and the promotion of literature by linking texts to places—geographical, historical, and touristic places visited physically or imaginatively. The platform allows contributors to collaboratively create and share multi-level books called “eZoomBooks” or digital enriched versions of the original version, organized according to tabs linked to place names in the original. A zooming function enables readers of the eZoomBooks on the platform to navigate freely between the original and enriched versions. Teacher-directed collaboration activities expand the applications of the eZB platform and myplace4u extension.  相似文献   

Impact of online journals on citation patterns of dentistry,nursing, and pharmacy faculty     

Sandra L De Groote  Felicia A Barrett 《Journal of the Medical Library Association》2010,98(4):305-308

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Looking for Ethical Needles in a 62‐year‐old Haystack,or Unearthing Gems in the Mud?     

Linda De George‐Walker  P. A. Danaher 《International Journal of Disability, Development & Education》2009,56(4):421-427

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The role of working memory in spatial text processing: What benefit of imagery strategy and visuospatial abilities?     

Valérie Gyselinck  Chiara Meneghetti  Rossana De Beni  Francesca Pazzaglia 《Learning and individual differences》2009,19(1):12-20

This study investigated the construction of a spatial model in relation to working memory (WM) and visuospatial abilities. Participants were trained to use either imagery or verbal strategies to process route spatial texts. Results obtained on a free recall task, a verification test and a graphic representation task showed the beneficial effect of using a strategy based on mental images. When imagery strategies were used, a concurrent articulatory task produced interference effects on recall performance, and a spatial tapping task also impaired performance as compared to the control condition. These interference effects suggest that both visuospatial and verbal WM were involved in construction of the spatial model. When repetition strategies were used, however, only the articulatory task produced interference effects, highlighting the role of the verbal WM. To elucidate how the involvement of the visuospatial component may differ in relation to visuospatial abilities, participants with good or poor ability in generation of visual images and spatial manipulation of objects were compared. The benefit of the imagery strategy was found in both groups, but whereas low-visuospatial imagery participants were sensitive to spatial interference, their high ability counterparts were not. These results question the role of imagery processes in the construction of spatial models and their relation to the visuospatial WM.  相似文献   

Dynamic testing in indigenous and ethnic minority children     

Wilma C.M. Resing  Erika Tunteler  Froukje M. de Jong  Tirza Bosma 《Learning and individual differences》2009,19(4):445-450

Our study aim was to examine whether ethnic-minority children would show different change patterns to indigenous children when presented with a seriation task within a dynamic testing context based on graduated prompt-techniques. We hypothesized that both Dutch-indigenous and ethnic-minority children would employ more sophisticated strategies after graduated prompt-training compared with untrained control-group children, and that trained ethnicity groups would show different progression paths from pre- to posttest. We also hypothesized that ethnic-minority and Dutch-indigenous children would progress differently in types of strategies over the course of their training, and that they would differ in number and type of instructions needed; i.e., whether various learning patterns could be detected. We further examined which variables predicted strategy-level best. Dynamically tested children changed their strategy behavior into the direction of a more advanced strategy; this change was the largest for the initial weaker scoring ethnic-minority children. These children also initially needed more but progressively needed less cognitive hints than Dutch-indigenous children during training. The graduated prompts approach we made use of clearly unfolds possibilities to detect and describe strong and weaker points in each child's solving processes before, during and after training. With a short intervention it appeared possible to describe how many prompts when and what type of prompts a child needed during training, i.e. to describe “the learning while tested” process.  相似文献   

How Digital Content Resellers are Impacting Trade Book Publishing     

Neil De Young 《Publishing Research Quarterly》2009,25(3):139-146

Some key questions for publishers in today’s market are: Could Amazon’s recent merger and acquisitions strategy create a disruptive or paradigm shifting business model in the publishing industry? Do their recent actions post mergers and acquisitions illustrate a predicable pattern of behaviour that publishers can strategize around? This paper will explore these questions and look at some of the possible reasons behind Amazon’s business practices and the possible consequences to publishers.  相似文献   

Dielectrophoresis based discrimination of human embryonic stem cells from differentiating derivatives     

Srinivas Velugotla  Steve Pells  Heidi K. Mjoseng  Cairnan R. E. Duffy  Stewart Smith  Paul De Sousa  Ronald Pethig 《Biomicrofluidics》2012,6(4)

Assessment of the dielectrophoresis (DEP) cross-over frequency (f_xo), cell diameter, and derivative membrane capacitance (C_m) values for a group of undifferentiated human embryonic stem cell (hESC) lines (H1, H9, RCM1, RH1), and for a transgenic subclone of H1 (T8) revealed that hESC lines could not be discriminated on their mean f_xo and C_m values, the latter of which ranged from 14 to 20 mF/m². Differentiation of H1 and H9 to a mesenchymal stem cell-like phenotype resulted in similar significant increases in mean C_m values to 41–49 mF/m² in both lines (p < 0.0001). BMP4-induced differentiation of RCM1 to a trophoblast cell-like phenotype also resulted in a distinct and significant increase in mean C_m value to 28 mF/m² (p < 0.0001). The progressive transition to a higher membrane capacitance was also evident after each passage of cell culture as H9 cells transitioned to a mesenchymal stem cell-like state induced by growth on a substrate of hyaluronan. These findings confirm the existence of distinctive parameters between undifferentiated and differentiating cells on which future application of dielectrophoresis in the context of hESC manufacturing can be based.  相似文献