Energy system contribution to 1500- and 3000-metre track running

The aim of the present study was to quantify the contributions of the aerobic and anaerobic energy systems to 1500- and 3000-m track running events during all-out time-trials performed individually on a synthetic athletic track. Ten 3000-m (8 males, 2 females) and fourteen 1500-m (10 males, 4 females) trained track athletes volunteered to participate in the study. The athletes performed a graded exercise test in the laboratory and two time-trials over 1500 or 3000?m. The contributions of the energy systems were calculated by measures of race oxygen uptake, accumulated oxygen deficit (AOD), race blood lactate concentration, estimated phosphocreatine degradation and some individual muscle metabolite data. The relative aerobic energy system contribution (based on AOD measures) for the 3000?m was 86% (male) and 94% (female), while for the 1500?m it was 77% (male) and 86% (female). Estimates of anaerobic energy expenditure based on blood lactate concentrations, while not significantly different (P?>?0.05), were generally lower compared with the AOD measures. In conclusion, the results of the present study conform with some recent laboratory-based measures of energy system contributions to these events.     

Prediction of habitual physical activity level and weight status from fundamental movement skill level

Abstract

Fundamental movement skills (FMS) have been assessed in children in order to investigate the issues of the low proportion of children who meet physical activity (PA) guidelines and rising levels of obesity. The aim of this research was to identify whether previous or current FMS level is a better predictor of PA levels and weight status in children. In January 2012 (year 1), 281 children were recruited from one primary school in the West Midlands, UK. Children performed eight FMS three times, which were videoed and assessed using a subjective checklist. Sprint speed and jump height were measured objectively. Height and mass were measured to calculate the body mass index to determine the weight status. Skinfold calliper readings were used to calculate body fat percentage. One year later, in January 2013, all these tests were repeated on the same children, with the additional collection of PA data via the use of pedometers. Following multiple linear regression, it was identified that prior mastery in FMS was a better predictor of current PA, whereas current FMS was a better predictor of current weight status. Overall, FMS mastery is needed in childhood to be able to participate in PA and maintain a healthy weight status.     

Effects of exercise intensity and duration on the excess post-exercise oxygen consumption

Abstract

Recovery from a bout of exercise is associated with an elevation in metabolism referred to as the excess post-exercise oxygen consumption (EPOC). A number of investigators in the first half of the last century reported prolonged EPOC durations and that the EPOC was a major component of the thermic effect of activity. It was therefore thought that the EPOC was a major contributor to total daily energy expenditure and hence the maintenance of body mass. Investigations conducted over the last two or three decades have improved the experimental protocols used in the pioneering studies and therefore have more accurately characterized the EPOC. Evidence has accumulated to suggest an exponential relationship between exercise intensity and the magnitude of the EPOC for specific exercise durations. Furthermore, work at exercise intensities ≥50 – 60% [Vdot]O_2max stimulate a linear increase in EPOC as exercise duration increases. The existence of these relationships with resistance exercise at this stage remains unclear because of the limited number of studies and problems with quantification of work intensity for this type of exercise. Although the more recent studies do not support the extended EPOC durations reported by some of the pioneering investigators, it is now apparent that a prolonged EPOC (3 – 24 h) may result from an appropriate exercise stimulus (submaximal: ≥50 min at ≥70% [Vdot]O_2max; supramaximal: ≥6 min at ≥105% [Vdot]O_2max). However, even those studies incorporating exercise stimuli resulting in prolonged EPOC durations have identified that the EPOC comprises only 6 – 15% of the net total oxygen cost of the exercise. But this figure may need to be increased when studies utilizing intermittent work bouts are designed to allow the determination of rest interval EPOCs, which should logically contribute to the EPOC determined following the cessation of the last work bout. Notwithstanding the aforementioned, the earlier research optimism regarding an important role for the EPOC in weight loss is generally unfounded. This is further reinforced by acknowledging that the exercise stimuli required to promote a prolonged EPOC are unlikely to be tolerated by non-athletic individuals. The role of exercise in the maintenance of body mass is therefore predominantly mediated via the cumulative effect of the energy expenditure during the actual exercise.     

Student attitudes towards and use of ICT in course study,work and social activity: A technology acceptance model approach

The increasing use of information and communication technology (ICT) in higher education has been explored largely in relation to student experience of coursework and university life. Students' lives and experience beyond the university have been largely unexplored. Research into student experience of ICT used a validated model—the technology acceptance model—to explore the influence of work and social/leisure contexts as well as course study, on attitudes towards and take up of technology. The results suggest that usefulness and ease of use are key dimensions of students' attitudes towards technology in all three contexts but that ICT is perceived most positively in the context of work and technology use at work is an important driver for technology use in other areas.     

Contextual factors and effective school improvement

This research provides policy-makers, researchers, and educators at all levels with a glimpse of the contextual influence on effective school improvement (ESI) in 8 European countries. What are the factors at the contextual level, particularly at the national level, which influence ESI? Are there any similarities or differences between the influences they exert on ESI in different countries? Can common traits be identified? These are the core questions this paper tries to explore. It has drawn on insights from 5 areas of research: school effectiveness; school improvement; curriculum; public choice (marketization); organization, organizational learning, and learning organization. This yields a “goal – pressure – support” conceptual framework accompanied by 10 contextual factors and 48 indicators. Given the original conceptual framework and the empirical support of 31 case studies contributed by 8 European countries, the findings of this study may have significant implications for policy, practice, school effectiveness, and school improvement.     

Mediating gendered performances: young people negotiating embodiment in research discussions

Gender inequalities in schools have implications for life chances, emotional well-being and educational policies and practices, but are apparently resistant to change. This paper employs Judith Butler’s conceptualisation of performativity in a study of young people and consumption to provide insights into gendered inequities. It argues that how the young people ‘do’ gender in focus groups frequently involves the discussion of young women’s bodies and clothes in ways that are ‘culturally intelligible’. The focus on young women’s bodies produced joking relationships and a taken-for-granted understanding of gender in some same-sex interactions, but sometimes created tension and divisions in mixed-gender groups. Discussions of sexualisation in single-sex and mixed-sex groups were similarly emotionally loaded. The paper argues that attention to gender inequalities requires detailed attention to the differential power relations in which boys express desires to control feminine bodies and girls police their own and other girls’ bodies. Methodologically, the paper suggests that focus group discussions constitute an ethnographic site for analysis and that researchers co-construct young people’s narratives of embodied gender practices in ways that mediate young people’s gendered performances.     

Surveying Adolescent Worries: Development of the ‘Things I Worry About’ Scale

Steve Decker, Anglia Polytechnic University, Death and Loss: Compassionate Approaches in the Classroom, Oliver Leaman. London: Cassell, 1995. 160pp. hb ISBN 0 304 33087 6, pb ISBN 0 304 33089 2, price not available

Alan Dodds, The Ferrers School, Rushden, Northamptonshire, Bullying at School: What We Know and What We Can Do, Dan Olweus. Oxford: Blackwell, 1993. 140pp. pb ISBN 0 631 19241 7

Richard Smith, Elliott School, London, Combating Truancy in Schools, Edith Le Riche. London: David Fulton/ The Roehampton Institute, 1995. 112pp. ISBN 1 85346 337, £11.95

Ron Best, Roehampton Institute, London, Psychology in the Classroom: Reconstructing Teachers and Learners, Phillida Salmon. London: Cassell, 1995. 98pp. hb ISBN 0 304 33254 2, £40.00, pb ISBN 0 204 33256 9, £12.99

David Lambourn, NAPCE Base, Warwick, Primary Teachers at Work, R. J. Campbell and S. R. St.J. Neill. London: Routledge, 1994. 252pp. pb ISBN 0 415 08863 1, £14.99     

Learning to manage and managing to learn

In this paper Fiona Reeve, Jim Gallacher and Terry Mayes of Glasgow Caledonian University, bring together two current themes in higher education, work‐based learning and the use of new technology in teaching and learning. The paper begins to explore their interaction by examining the ways in which new technology can help to overcome some of the barriers which exist to work‐based learning. To begin this analysis a general model of a WWW‐based learning resource is described which has relevance for a range of open learning contexts. A central aspect of this model is the use of communication technologies to promote the creation of learning dialogues. The way in which this general model might be applied to work‐based learning is then examined. Having suggested that such a model has much to offer work‐based learning, some of the constraints which might be encountered on implementation are then identified. Finally, the authors conclude that it is in promoting more and better forms of communication that new technology can contribute towards work‐based learning practice.     

Sport,Technique and Violence: The Technical Modes for Generating Sport Violence

Norbert Elias makes technical progress one of the markers of the state of civilisation. It is from this viewpoint that we would like to return to the question of sport, a fundamental part in Elias' civilising process, which also constitutes, a contrario, one of the most ambiguous aspects of ‘technical progress’ and its relation to violence, to the articulation of a double abuse of instrumental rationality. On the one hand the infinite improvement of human possibilities (records, performance) which leads to the recognised risks of exploitation and the ultra-sophisticated controlling of athletes (extreme pressure, over-training) as a corollary of the temptation to over-stimulate athletic potential as a result of the uncontrolled use of victory techniques (cheating, doping, violence). On the other hand, the stakes involved in the production of a vast spectacle with ideological, sociopolitical and socio-economic overtones which lead to technological manipulations. Both these tendencies overlap, and furthermore cannot be isolated from, a more general context of the technification of the social, at the heart of which instrumental rationality constitutes the first example of violence. This three-fold observation constitutes the basis of the argument set out in this paper.     

Sport,Prison, Violence: On Imprisonment and Confinement Conditions – ‘French Prison Sport’ and the Instruments of the World's Good Conscience

In France today, sport is considered to be a fundamental element of the educational offer in the prison environment, especially because it represents in the eyes of the majority an activity that is capable of channelling violence and violent behaviours, although this exemplary effect of education cannot be taken for granted. It is based, in fact, on a commonly accepted opinion and on evidence that is rarely questioned and is even contradicted in recent studies. But can sport, as a more or less formalised pedagogical, institutional and/or sociopolitical project, continue to be ‘educational’ in particular social spaces, like prison, which in essence distorts the conditions of unconstrained free practice and cultural dissemination? Starting from a case study, focused on France, the aim of this paper is to question the relation of sport with the calming qualities and/or, on the contrary, those that produce force fields, not by isolating it and constructing an improvised model but rather by re-inserting it into the issue of pacifying social fields, that is by re-integrating sports practice in the very place which gives it a sense and literally one which incarnates a motor praxeology with constraints – not to say control.