Moderate exercise and post-prandial metabolism: issues of dose-response

In this study, we examined the effects of 1 and 2 h of brisk walking on post-prandial metabolism. Eleven pre-menopausal women participated in three oral fat tolerance tests with different pre-conditions: control (no exercise), 1 h walk (1 h of walking at 50% maximal oxygen uptake, VO2max, on the day before) and 2 h walk (2 h walking at 50% VO2max on the day before). Venous blood samples were taken in the fasted state and for 6 h after ingestion of a high-fat mixed meal. Compared with the control trial, the 1 h walk reduced post-prandial lipaemia by a mean of 9.3%, whereas the 2 h walk reduced it by 22.8% (P < 0.01 for trend). Similarly, the 2 h walk reduced the post-prandial insulin response to a greater extent than the 1 h walk (17.3 vs 7.6%; P < 0.05 for trend). The results demonstrate that the beneficial effects of exercise on post-prandial metabolism are related to the duration and, therefore, the energy expenditure of the exercise session.     

Combining feminist pedagogy and transactional distance to create gender-sensitive technology-enhanced learning

In this paper, we argue for a new synthesis of two pedagogic theories: feminist pedagogy and transactional distance, which explain why and how distance education has been such a positive system for women in a national distance learning university. We illustrate this with examples of positive action initiatives for women. The concept of transactional distance allows us to explore distance as a form of psychological and communication space, not simply of geographical distance. Feminist pedagogy, on the other hand, has recognised the importance of gender in structuring disciplines as well as teaching strategies. Both theories implicitly position the face-to-face classroom as the ideal learning environment, with the implication that distance learning has to produce a deficient environment. We argue that the evidence for women does not support this and present examples of feminist distance learning provision that has offered successful technology-enhanced learning and educational opportunities.     

Intra-generational education: Imagining a post-age pedagogy

This article discusses the idea of intra-generational education. Drawing on Braidotti’s nomadic subject and Barad’s conception of agency, we consider what intra-generational education might look like ontologically, in the light of critical posthumanism, in terms of natureculture world, nomadism and a vibrant indeterminacy of knowing subjects. In order to explore the idea of intra-generationalism and its pedagogical implications, we introduce four concepts: homelessness, agelessness, playfulness and wakefulness. These may appear improbable in the context of education policy-making today, but they are born of theorising our practices in the age-transgressive field of Philosophy with Children. We argue that these concepts help to reconfigure intra-generational relations, ways of being and becoming. They express the longing, corporeality and visionary epistemology of nomadic enquiry. These inventions express a non-hierarchical philosophy of immanence. We draw some tentative conclusions about educational practices more generally.     

Do published search filters to identify diagnostic test accuracy studies perform adequately?

OBJECTIVES: To assess the performance of published search filters in finding diagnostic test accuracy studies. METHODS: Diagnostic test accuracy search filters were identified by searching medline, our own files and by requesting unpublished filters from colleagues. We applied the filters to a case study review of diagnostic test accuracy studies for urinary tract infections (UTI) in young children. The included studies with records in medline formed the gold standard. The performance of the filters in finding those gold standard records was assessed. RESULTS: We identified twenty-three diagnostic test accuracy search filters for use with medline. The case study systematic review of UTI included 179 studies of diagnostic test accuracy, of which 160 were available in medline. The filters showed a wide range of sensitivities (range: 20.6% to 86.9%) and precision (range: 1% to 9.4%). CONCLUSIONS: Our results broadly support those reported in two other studies. The search filters tested do not offer an adequate trade-off between sensitivity and precision to be used to identify studies for systematic reviews. However, there are methods available to explore whether search filters are viable based on an objective statistical analysis of the text and indexing used in records.     

Intensity-dependent reductions in resting blood pressure following short-term isometric exercise training

To reduce resting blood pressure, a minimum isometric exercise training (IET) intensity has been suggested, but this is not known for short-term IET programmes. We therefore compared the effects of moderate- and low-intensity IET programmes on resting blood pressure. Forty normotensive participants (22.3 ± 3.4 years; 69.5 ± 15.5 kg; 170.2 ± 8.7 cm) were randomly assigned to groups of differing training intensities [20%EMG_peak (~23%MVC, maximum voluntary contraction, or 30%EMG_peak (~34%MVC)] or control group; 3 weeks of IET at 30%EMG_peak resulted in significant reductions in resting mean arterial pressure (e.g. ?3.9 ± 1.0 mmHg, P < 0.001), whereas 20%EMG_peak did not (?2.3 ± 2.9 mmHg; P > 0.05). Moreover, after pooling all female versus male participants, IET induced a 6.9-mmHg reduction in systolic blood pressure in female participants, but only a 1.5-mmHg reduction in systolic blood pressure in male participants, although the difference was not significant. An IET intensity between 20%EMG_peak and 30%EMG_peak is sufficient to elicit significant resting blood pressure reductions in a short-term training period (3 weeks). In addition, sexual dimorphism may exist in the magnitude of reductions, but further work is required to confirm this possibility, which could be important in understanding the mechanisms responsible.     

Hospitalized cases of nonorganic failure to thrive: the scope of the problem and short-term lay health visitor intervention

This paper describes the characteristics of thriving and failure to thrive (FTT) children and their mothers and examines the effect of short-term lay health visitor intervention in cases of nonorganic failure to thrive (NO FTT). Twenty-five FTT children and mothers received lay health visitor (LHV) intervention in addition to other community and medical treatment; 25 other FTT children and mothers did not receive the LHV intervention but did receive all other medical and community treatment. Twenty-five thriving children and mothers were matched with the FTT children and mothers in the LHV group on the child's age at intake, sex, birth weight, and the mother's age, ethnicity, and number of living children. At initial assessment, the FTT and thriving groups were found to be comparable on demographic factors, infant birth weight percentiles, apgar scores, complications of pregnancy or delivery, and separations in the newborn period. There were more premature births in the LHV group although the proportion of premature births for the FTT and thriving groups overall were similar. A majority of mothers in the FTT groups had negative memories of childhood in contrast to more positive memories in the thriving group. At initial assessment, the majority of thriving children were developmentally normal and had increased from their birth weight percentiles whereas all of the FTT children had decreased from their birthweight percentiles and over half were developmentally delayed. There were clear differences in mother-child interaction patterns in the thriving and FTT groups. Three patterns of interaction were identified in the FTT group: benign neglect, incoordination, and overt hostility. Intervention had no measurable effect on the child's weight, development, or interaction patterns. Only 8 of 37 FTT children reevaluated 6 months later showed "catch up" growth and only 7 had improved in developmental score category. Patterns of interaction were found to persist over the 6 months in all cases. One to three year follow-up of 44 families emphasized the severity of the condition and the need for differentiation of the severity of the disturbance in the mother-child relationship and for more intensive intervention than was available in this study. Of these 44 cases, 2 children had died, 5 had been physically abused or further neglected, and 10 were in alternative care arrangements.     

Information Systems Education in the USA

Fast changing information technology (IT) has posed tremendous challenges to information systems (IS) educational programmes. One question frequently asked by IS educators has been: ‘Are we doing the right thing?’ This article presents information about the current state of IS educational programmes in the USA based on a survey of 193 higher education institutions conducted at the end of 1996. The results indicate that IS educational programmes are prevalent in the higher educational institutions. These programmes have a highly qualified faculty: 92% or more holding terminal degrees, more than two-thirds having tenure, with evidence of an increasing amount of time being devoted to research activities. It is also found that the most popular programming languages taught in both graduate and undergraduate programmes are C/C++, SQL and COBOL, and dominant operating systems are Windows/OS2 and UNIX. The most profound change over the last five years in the content of IS programmes has been the transition from text-based and centralized mainframe environment to the graphical and decentralized network based client–server architecture. This survey provides a snapshot of IS programmes, serving both to improve our understanding of current programmes and to provide a frame of reference for future studies.     

Putting meat on the bones: factors affecting student teachers’ confidence to teach reading

Teacher training, especially in the teaching of reading, has come to the forefront in policy making and teacher training institutions are now subject to even more rigorous inspection procedures than schools, much of this inspection focusing on the preparation of teachers of reading. Yet much of this development has rested on very little research evidence. We still do not know exactly what constitutes effective teacher training for reading teaching. Gill Scrivens’ study reported here makes a significant contribution to this area in that it highlights the fact that some earlier research studies have taken too simplistic a view of the training process. It also suggests practical ways forward in this area.