Benefits of achieving vigorous as well as moderate physical activity recommendations: evidence from heart rate complexity and cardiac vagal modulation     

Soares-Miranda L  Sandercock G  Vale S  Silva P  Moreira C  Santos R  Mota J 《Journal of sports sciences》2011,29(10):1011-1018

The aim of this study was to examine differences in traditional heart rate variability measurements and heart rate complexity (sample entropy) in young adults grouped by objectively measured achievement of either moderate or both moderate and vigorous physical activity recommendations. Of 168 young adults tested (86 females, 82 males; age 20.5 ± 1.2 years), 119 achieved only recommendations for moderate physical activity (moderate group) and 49 achieved recommendations for both moderate and vigorous physical activity (vigorous group). Analysis of covariance controlling for sex, weekly minutes of moderate physical activity, and percentage of body fat was used to assess between-group differences in heart rate variability and heart rate complexity. Logistic regression analysis was used to determine the group characteristics that best predicted high heart rate complexity and vagal indices of heart rate variability. The majority of the autonomic measures were higher (P < 0.05) in the vigorous group, and regression analysis showed that vigorous physical activity was the only multivariate predictor of higher heart rate complexity and higher heart rate variability. Young adults engaged in regular vigorous physical activity were more than twice as likely to have high heart rate complexity than those involved in predominantly moderate exercise. These findings suggest that vigorous physical activity is more closely associated with high heart rate complexity than moderate physical activity in young adults.  相似文献   

Climate change, flooding and the media in Britain     

Gavin NT  Leonard-Milsom L  Montgomery J 《Public understanding of science (Bristol, England)》2011,20(3):422-438

The weather is a preoccupation of the British public, and flooding has become a salient feature of their experience. Climate science also has important things to say about the prevalence, distribution and dangers of rainfall and flooding, and what we should expect from global warming. This paper looks at British press coverage of flooding, and at the connections made between this theme and climate change. It aims to expose longitudinal patterning, and assess how common the connection is. From here the analysis moves to specific cases of high profile flooding events for a detailed exploration of the tone and tenor, and discursive contours of reports. The results suggest the media's contribution to genuine debate is mixed, that the connection between common forms of reportage and our scientific understanding of the phenomena is often tenuous. The paper explores the implications for the way the politics of climate change plays out.  相似文献   

A cyclical self-assessment process: towards a model of how students engage in self-assessment     

Zi Yan  Gavin T.L. Brown 《Assessment & Evaluation in Higher Education》2017,42(8):1247-1262

While significant progress has been made on understanding the effects of student self-assessment, the processes by which these effects occur are much less studied. The present research identified the actions involved in a cyclical self-assessment process. In this qualitative study, 17 undergraduate students from a teacher education institute took part in in-depth interviews focusing on the common actions students normally undertake to self-assess. The findings identified the following three actions that are commonly undertaken in the self-assessment process: (1) determining the performance criteria, (2) self-directed feedback seeking and (3) self-reflection. The paper discusses the implications of the findings and concludes with suggestions for promoting student self-assessment.  相似文献   

Gutenberg’s effects on universities     

Gavin Moodie 《History of education》2013,42(4):450-467

This article considers the effects on universities of Gutenberg’s invention of printing. It considers four major effects: the gradual displacement of Latin as the language of scholarship with vernacular languages, the expansion and eventual opening of libraries, major changes to curriculum, and major changes to pedagogy including lectures. The paper does not find that the ubiquity of books changed the role of university teachers as was proposed in the late fifteenth century. The paper also considers a fifth change: the eventual replacement of oral disputations with written examinations as the main form of assessment for admission to a degree. While this was radical, it owed little to the direct effects of printing. The paper concludes with brief observations on the implications of the earlier information revolution for understanding the effects on universities of the current information revolution.  相似文献   

Academic difficulties encountered by East Asian international university students in New Zealand     

Boram Lee  Susan P. Farruggia  Gavin T.L. Brown 《高等教育研究与发展》2013,32(6):915-931

The study focused on learning difficulties experienced by East Asian International (EAI) students. Participants were 117 EAI students undertaking tertiary study at a major university, all were surveyed and 21 students were interviewed. The findings suggest that language limitations, academic content and learning styles were associated with difficulties in their learning. Difficulties with academic content appeared to act as the major barrier to their academic performance rather than English language. This is contrary to earlier findings, where Asian students often experienced difficulties in tasks that are particularly related to language proficiency. The study also contradicted the popular belief that Asian students are only surface learners.  相似文献   

Academics' perceptions of their professional development needs related to leadership and management: What can we learn?     

Stephen J Marshall  Moya J Adams  Alison Cameron  Gavin Sullivan 《International Journal for Academic Development》2013,18(1):42-53

Enquiries into the governance, structure and management of higher education institutions across the globe have stimulated changes to the legislative and policy frameworks within which universities operate and to their organizational structures and processes. These changes have subsequently brought into question the proper role of academics in relation to the leadership and management of their departments/institutions. While mainstream academic staff conceive of academic leadership as being strictly associated with teaching, research and community outreach, university administrators and policy makers conceptualize it more broadly. Their definitions often include the management of change, quality, information, finance, and physical and human resources - functions that many mainstream academics perceive as being the responsibility of departmental/institutional administrative or support staff. Such differences create major challenges for academic development units. What type of training should they provide? Should they embrace activities that support these new conceptions of leadership and management? These are among the central issues explored in this paper.  相似文献   

Measuring Model-Based High School Science Instruction: Development and Application of a Student Survey     

Gavin W. Fulmer  Ling L. Liang 《Journal of Science Education and Technology》2013,22(1):37-46

This study tested a student survey to detect differences in instruction between teachers in a modeling-based science program and comparison group teachers. The Instructional Activities Survey measured teachers’ frequency of modeling, inquiry, and lecture instruction. Factor analysis and Rasch modeling identified three subscales, Modeling and Reflecting, Communicating and Relating, and Investigative Inquiry. As predicted, treatment group teachers engaged in modeling and inquiry instruction more than comparison teachers, with effect sizes between 0.55 and 1.25. This study demonstrates the utility of student report data in measuring teachers’ classroom practices and in evaluating outcomes of a professional development program.  相似文献   

Transactions in primary physical education in the UK: a smorgasbord of looks-like-sport     

Gavin Ward  Mikael Quennerstedt 《Physical Education & Sport Pedagogy》2016,21(2):137-152

Background: Crum proposes the term ‘movement culture’ as a means to best understand the relationships between PE and wider movement practices. Learning within movement culture is practical and embodied, and integral to the cultural and institutional contexts within which PE is situated. Purpose: Using visual data gathered from PE lessons within a UK primary school this paper aims to identify movement cultures across the observed PE lessons, and understand how these movement cultures are shaped and maintained by analysing how teachers and pupils' actions-in-on-going-events make the movement cultures something ‘in-common’. Participants, research design and data collection: A mixture of Year 5 and 6 PE lessons were video recorded within a primary school in the West Midlands. Careful attention was paid to the ethical considerations involved in the collection and storage of the data. Data analysis: By dissolving the dualism between an individual and their environment, Dewey and Bentley's (1949/1991) transactional theory of learning supports an analysis of action in context. Application of this theory enables the researcher to explore actions-in-on-going activities and understand how this action shapes the movement culture within which it occurs. In this process we did not use theory to deduce the participants' intensions or potential changes in their cognitive structures; rather it was the functions' actions constituted in the observed situation, which lead the analysis. Findings: The existence of a multi-activity idea of sampling different sports within this study of primary PE amounted to eating from a smorgasbord where the flavours of the dishes initially looked different, but actually tasted the same. Each dish was differentiated by the use of contrasting equipment, physical locations and named activities. In reality what was realised was a diluted, repetitive and overriding flavour of looks-like-sport. Pupils were tasked with actions which functioned to produce a stage managed show of controlled activity. This was supplemented by their compliance to strict behaviour codes and by attempting to make highly cooperative tasks and games work. This was aided by the adoption and acceptance of different roles. Succeeding within this movement culture demanded an implicit understanding of the need to coordinate actions with others cooperatively. Conclusions: The standout flavour within this smorgasbord involved gymnastics, where the removal of competition and provision of space for pupils to re-actualise their knowledge, created an interesting blend of pupil engagement, sustained physical activity, creativity, inclusion and cooperation. These interesting flavours may have been curtailed by a need to replicate movements acceptable to doing gymnastics-for-real and suggests that other forms of looks-like-sport may have the potential to elicit similar action. Continued investigation of the directions of actions-in-context-in-PE-settings would aid our understanding of the creation, nature and reproduction of learning experiences within this looks-like-sport movement culture. More specifically, analysis of the educational content and pedagogy of the recorded PE lessons within this school would support our understanding of how teachers and pupils negotiate the complex mix of educational, sport and health discourses that constitute the looks-like-sport movement culture.  相似文献   

‘Learning the basics’: young people’s engagement with sexuality education at secondary schools     

Leigh Adams Tucker  Gavin George  Candice Reardon  Saadhna Panday 《Sex education》2016,16(4):337-352

School-based sexuality education remains a key response to the HIV epidemic. Drawing on findings from an ethnographic study, this study explores how young people engage with sexuality and HIV- and AIDS-related education as it is delivered through the Life Orientation (LO) learning area in South Africa, in order to understand the dynamics that support or hinder engagement. Focus group discussions were held with Grade 9 and 11 learners (aged 14–18 years) from 16 randomly selected public secondary schools across three provincial districts. Results show that enjoyment of LO education was related to perceived relevance and distinctiveness, informal lesson delivery, subjective assessment standards and seemingly minimal effort. However, the perception of reduced effort tarnished the status of LO and young people’s motivation to participate. Learner engagement is influenced by a variety of cognitive, affective and behavioural pathways including internalised discourse around HIV and AIDS, gender and sexuality; the quality of youth–educator relations and teaching competencies; peer pressures; and broader cultural dynamics. The cultivation of a learning environment in which young people share and debate their views promotes engagement and critical thinking. In-service and pre-service educator training, structured activity plans and monitoring are recommended to advance the content knowledge and pedagogy of educators.  相似文献