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221.
This paper explores the issues that secondary history teachers on an initial teacher education (ITE) programme in England encounter in attempting to incorporate more cultural and ethnic diversity into the history curriculum. It also assesses the impact that changes in their training course had on their views and pedagogical practice. Using questionnaires and scenario based interviews with three cohorts of trainee teachers, key challenges were identified, which were related to the purposes of teaching history and diversity, appropriate pedagogy and content, dealing with pupils, and teachers’ personal concerns. A framework for analysing trainees’ stances towards cultural and ethnic diversity based upon a confident-uncertain-uncomfortable continuum was developed. The research revealed that the course had had an impact, although this was in subtle rather than marked ways, which raises further questions about what is possible within the confines of an ITE training programme and the need for additional support beyond the course. 相似文献
222.
Young people, particularly girls, constructed in the education system as having behavioural, emotional and social difficulties are amongst the least represented voices in research. Frequently denied a place to speak from, we direct attention to the importance of hearing girls, who are troubled and troubling—deviating from the rules of school and the norms of their gender—speak about their dis/engagement in education. We argue that participatory research methods can provide meaningful ways for girls to construct and better understand their own narratives. In so doing we draw on our ongoing research in England with teenage girls excluded from mainstream provision. Findings from analysis of their narratives are discussed in relation to voice, space, audience and influence. This process reveals the significance of hearing and responding to the multilayered complexities of girls’ voices in purposeful ways. 相似文献
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224.
To assess the effect of cold water immersion and active recovery on thermoregulation and repeat cycling performance in the heat, ten well-trained male cyclists completed five trials, each separated by one week. Each trial consisted of a 30-min exercise task, one of five 15-min recoveries (intermittent cold water immersion in 10 degrees C, 15 degrees C and 20 degrees C water, continuous cold water immersion in 20 degrees C water or active recovery), followed by 40 min passive recovery, before repeating the 30-min exercise task. Recovery strategy effectiveness was assessed via changes in total work in the second exercise task compared with that in the first. Following active recovery, a mean 4.1% (s = 1.8) less total work (P = 0.00) was completed in the second than in the first exercise task. However, no significant differences in total work were observed between any of the cold water immersion protocols. Core and skin temperature, blood lactate concentration, heart rate, rating of thermal sensation, and rating of perceived exertion were recorded. During both exercise tasks there were no significant differences in blood lactate concentration between interventions; however, following active recovery blood lactate concentration was significantly lower (P < 0.05; 2.0 +/- 0.8 mmol . l(-1)) compared with all cold water immersion protocols. All cold water immersion protocols were effective in reducing thermal strain and were more effective in maintaining subsequent high-intensity cycling performance than active recovery. 相似文献
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226.
Joseph Henson Charlotte L. Edwardson Melanie J. Davies Jason M.R. Gill Liam M. Heaney Kamlesh Khunti 《Journal of sports sciences》2020,38(10):1150-1160
ABSTRACT The aim was to investigate how measurements of the lipidome differ according to the level and intensity of physical activity in a population at high risk of type 2 diabetes (T2DM). A targeted metabolomics platform provided quantitative molecular data on lipid species. Linear regression examined the associations between plasma lipid concentrations, particle size and time spent in objectively measured physical activity intensity domains, in increments of 500 counts per minute (cpm) (up to >4500 cpm (~>5.6METs)). Results are presented as % difference in the concentration (lower/higher) or particle size (smaller/larger) per 10 min of activity within each intensity. Five hundred and nine participants were included. Time spent in the lowest physical activity intensity domain (<500 cpm) was unfavourably associated with VLDL (2%), HDL (?2%) and Apolipoprotein A-1 particle concentrations (?2%) and HDL diameter (?2%). Conversely, time spent in intensities ≥1000 cpm were favourably associated with HDL subclass concentrations; with stronger associations seen at moderate intensities (2000-3999 cpm (~4.5METs)). For Apolipoprotein-B concentration and VLDL particle concentration and size, a negative association was consistently observed at the highest physical activity intensity only. If these associations are causal, HDL subclasses appear sensitive to light-intensities whereas only the high category of physical activity intensity was consistently associated with VLDL subclasses. 相似文献
227.
Stephen P. Fenemor Nicholas D. Gill Stacy T. Sims C. Martyn Beaven Matthew W. Driller 《Measurement in physical education and exercise science》2020,24(1):49-55
ABSTRACTThis study compared criterion to minimally invasive, practical measures of core (Tc) and skin (Tsk) temperature during 30 min of moderate-intensity cycle exercise in a heat chamber (35°C, 60% rH). Tc was monitored using a core temperature pill (Tc(Pill)) and tympanic thermometer (Tc(Tymp)) during rest, exercise, and recovery in 15 participants. Tsk was monitored using hard-wired skin thermistors attached to a data logger (Tsk(T)) and a thermal imaging camera (Tsk(IR)) in 11 participants. Tc measurement resulted in no significant difference (p > 0.05), a mean bias of 0.1°C, coefficient of variation (CV%) of 1.0%, and correlation of r = 0.74 between devices. Tsk measurement resulted in a significant difference (p = 0.01), a mean bias of 0.6°C, CV% of 2.3%, and correlation of r = 0.61 between devices. Tc(Tymp) demonstrated acceptable agreement with Tc(Pill); however, caution is advised when using Tsk(IR) to give accurate measures of Tsk during exercise. 相似文献
228.
229.
Evenson KR Catellier DJ Gill K Ondrak KS McMurray RG 《Journal of sports sciences》2008,26(14):1557-1565
A calibration study was conducted to determine the threshold counts for two commonly used accelerometers, the ActiGraph and the Actical, to classify activities by intensity in children 5 to 8 years of age. Thirty-three children wore both accelerometers and a COSMED portable metabolic system during 15 min of rest and then performed up to nine different activities for 7 min each, on two separate days in the laboratory. Oxygen consumption was measured on a breath-by-breath basis, and accelerometer data were collected in 15-s epochs. Using receiver operating characteristic curve (ROC) analysis, cutpoints that maximised both sensitivity and specificity were determined for sedentary, moderate and vigorous activities. For both accelerometers, discrimination of sedentary behaviour was almost perfect, with the area under the ROC curve at or exceeding 0.98. For both the ActiGraph and Actical, the discrimination of moderate (0.85 and 0.86, respectively) and vigorous activity (0.83 and 0.86, respectively) was acceptable, but not as precise as for sedentary behaviour. This calibration study, using indirect calorimetry, suggests that the two accelerometers can be used to distinguish differing levels of physical activity intensity as well as inactivity among children 5 to 8 years of age. 相似文献
230.
Gill Nicholls 《Teaching in Higher Education》2013,18(1):29-42
This paper demonstrates how the introduction of the word scholarship in respect to teaching has become confused and misplaced and used to sustain and enhance a particular type of credibility to activities related to the enhancement of learning and teaching in higher education. Bourdieu's concept of symbolic culture is used to construct the argument and show how the use of the term ‘Scholarship of Teaching’ needs to be re‐examined and conceptualized. Twenty‐five academics from a variety of disciplines were interviewed to give their perceptions on the notion of scholarship, the scholarship of teaching, and the scholarship in teaching. These data were used to develop a framework for understanding and possibly reconsidering the role of the scholarship of teaching. 相似文献