Changes in workload are evident during many physical activities. The aim of this study was to assess total substrate metabolism when the temporal placement of a period of higher-intensity work (75% VO 2max ) was varied within a low-intensity exercise session (50% VO 2max ). One experimental trial (higher intensity first) comprised 5 min low-intensity work, followed by 15 min high-intensity work, followed by 40 min low-intensity work. The other trial (low intensity first) comprised 40 min low-intensity work, followed by 15 min high-intensity work, followed by 5 min low-intensity work. The trials were designed to achieve an identical total energy expenditure. Energy expenditure, fat and carbohydrate utilization were estimated by expired gas analysis and compared between conditions. Mean total energy expenditure during the higher-intensity phase was 1076 kJ and 1128 kJ in the high-intensity first and low-intensity first trials respectively (t 6 = -3.76, P = 0.0047). Mean total energy expenditure for the whole trial was 3356 kJ and 3452 kJ in the high-intensity first and low-intensity first trials respectively (t 6 = -3.48, P = 0.0065). Mean whole-trial fat utilization was 1753 kJ and 1857 kJ in the high-intensity first and low-intensity first trials respectively (t 6 = -0.76, P = 0.24). Our findings suggest that changing the temporal placement of higher-intensity work within a low-intensity exercise session has a significant effect on total energy expenditure but not on the rate of fat oxidation. 相似文献
Survey sheets requiring three responses, written in order of preference, to each of 10 items regarding various aspects of school, were administered to 595 secondary school students attending three rural and four urban comprehensive schools. Data were assembled from the highest preference responses only, and compiled into three levels of rank‐order for incentive preferences regarding good behaviour, incentive preferences regarding good work, preferences for teacher support of good behaviour, preferences for teacher support of good work, observed teacher qualities, projected teacher qualities, preferred changes to the school environment, and reasons for attending school.
Results revealed that an almost universal level of support existed for the use of incentives linked directly to good social behaviour and or academic performance. Overall, social outcomes were preferred for good behaviour, and tangible outcomes were preferred for good schoolwork. However, age, sex, and ability effects provided some qualification of these trends. Academic outcomes were very poorly supported throughout. In terms of feedback preferences, overt feedback received significantly more support than covert feedback overall, and was linked significantly more often to social behaviour than schoolwork. This sample also favoured teachers who show empathy and explain well.
The majority of these adolescents indicated that they would like their schools to be redecorated more than any other physical change they could think of, and almost without exception exhibited positive reasons for attending school. 相似文献
Although there may be little expansion for conventional higher education on campus in the next decade, there is an unmet and growing need to provide home‐based continuing education. This will require an effective means of delivering learning materials to homes on a greater scale than can be handled by broadcasting alone, as well as the production of high quality software appropriate both to the means of delivery and the needs of students. There are several developments in technology which hold out promise for home use; these need to be developed as part of a wider learning system. Campus‐based institutions are well placed both to develop the hardware and to produce suitable learning materials, but this means that higher education institutions must show a much more flexible attitude to continuing education and to co‐operation with other organisations. 相似文献
ABSTRACTThis article reflects on the implications for practitioners, researchers and policy-makers of the future of the humanities in primary schools in the light of the challenges facing future generations. There is wide divergence in the four jurisdictions of the UK. The humanities are perceived as important, in principle, though curriculum frameworks differ. However, the status of the humanities is often uncertain, in practice, given the current emphasis on outcomes in literacy and numeracy. There is a lack of robust research on how, and by whom, the humanities are taught. The more theoretical articles suggest that the humanities, broadly conceived, are an essential aspect of young children’s education – to enable a deeper understanding of human culture and identity, and to develop the qualities and values needed in a diverse world. Additionally, curricular breadth is required alongside a realisation that narrowly focusing on propositional knowledge is limiting. While this has implications for the whole curriculum, History, Geography and Religious Education have key roles in meeting these aims and in engaging and motivating young children. A stronger policy steer is called for, to ensure that schools give more priority to humanities education, with greater investment in professional development in Initial Teacher Education and beyond. 相似文献
Our objective in this paper is to investigate, and comment upon, the assessment methods in use to monitor student progress and success in Economics Degree programmes. Our reasons for undertaking this study were twofold:
(a) while the content and teaching methods of economics courses have been the subject of debate and change, the corresponding methods of assessment have received little consideration, and (b) colleagues from other academic disciplines at our own institution, the Coventry Polytechnic, and elsewhere, comment adversely upon the terminal achievement record of economics students. 相似文献
Mentoring is an increasingly important element in the preparation of principals in many countries, including Singapore, the United States (US) and the United Kingdom (UK). In Singapore and the US, mentoring forms part of a pre-service programme of training for intending principals. In the UK, it is a voluntary programme which takes place during their first year as principals. The efficacy of mentoring depends on the quality of the mentor/protege relationship at least as much as the organisational and cultural framework within which it operates. Definitions and conceptions of mentoring are remarkably similar in different societies and its advantages appear to outweigh its disadvantages in both Singapore and the UK. 相似文献
By using a quasi-experimental design, in this study, we test the effect of undergraduate teaching assistants on student learning. Data were collected from 170 students enrolled in four sections of a quantitative research methods course, two sections without undergraduate teaching assistants and two sections with undergraduate teaching assistants, over two semesters. Results indicate that having undergraduate teaching assistants in the classroom can result in higher student performance. Students in the sections with undergraduate teaching assistants earned higher grades, were more likely to pass the course with a C or higher and performed better on half of the student learning outcomes than students in the sections without an undergraduate teaching assistant. Based on the overwhelmingly positive results on student learning, we would recommend the active use of undergraduate teaching assistants in the classroom, but especially for courses that students find challenging. 相似文献