The influence of 2 weeks of low-volume high-intensity interval training on health outcomes in adolescent boys     

Alan R. Barker  Josephine Day  Aaron Smith  Bert Bond  Craig A. Williams 《Journal of sports sciences》2013,31(8):757-765

Abstract

The present study aimed to establish whether 2 weeks of high-intensity interval training would have a beneficial effect on aerobic fitness, fat oxidation, blood pressure and body mass index (BMI) in healthy adolescent boys. Ten adolescent boys (15.1 ± 0.3 years, 1.3 ± 0.2 years post-estimated peak height velocity) completed six sessions of Wingate-style high-intensity interval training over a 2-week period. The first session consisted of four sprints with training progressed to seven sprints in the final session. High-intensity interval training had a beneficial effect on maximal O₂ uptake (mean change, ±90% confidence intervals: 0.19 L · min^?1, ±0.19, respectively), on the O₂ uptake at the gas exchange threshold (0.09 L · min^?1, ±0.13) and on the O₂ cost of sub-maximal exercise (–0.04 L · min^?1, ±0.04). A beneficial effect on the contribution of lipid (0.06 g · min^?1, ±0.06) and carbohydrate (–0.23 g · min^?1, ±0.14) oxidation was observed during sub-maximal exercise, but not for the maximal rate of fat oxidation (0.04 g · min^?1, ±0.08). Systolic blood pressure (1 mmHg, ±4) and BMI (0.1 kg · m², ±0.1) were not altered following training. These data demonstrate that meaningful changes in health outcomes are possible in healthy adolescent boys after just six sessions of high-intensity interval training over a 2-week period.  相似文献   

Narrative autoethnography and the promotion of spiritual well‐being in teacher research and practice     

Jean Bond  Danny Feeney 《Pastoral Care in Education》2013,31(3):187-194

This article demonstrates through an example the usefulness of autoethnography as a mechanism for teachers acquiring clarity about their spiritual experiences, which has the potential to contribute to facilitating pupils’ spiritual growth. I begin by examining the role of the spiritual dimension in the promotion of a holistic model of education. The purposes and ethical implications of autoethnographic research and its benefits for teacher development are addressed. A story about illness, neurosurgery and rehabilitation is presented, written according to introspective and autoethnographic techniques. The narrative reflects aspects of the writer’s spiritual growth and highlights the need among teachers to explore their own spiritual well‐being as much as the spiritual well‐being of their pupils. Suggestions are made about the diverse use of narrative to promote spiritual learning experiences in the classroom. This is an important part of the work carried out by teachers in the delivery of a curriculum that prepares learners to fulfil their potential in life and work.  相似文献   

It Takes a Village: Leadership in a Volunteer Organization     

Linda Campion  M. Aaron Bond 《TechTrends》2018,62(6):664-666

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What’s he talking about? The communicative alignment between a teacher’s intentions and students’ understandings     

Bernadette Knewstubb  Carol Bond 《高等教育研究与发展》2009,28(2):179-193

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Searching image in blue jays: Facilitation and interference in sequential priming     

Alan B. Bond  Alan C. Kamil 《Learning & behavior》1999,27(4):461-471

Repeated exposure to a single target type (sequential priming) during visual search for multiple cryptic targets commonly improves performance on subsequent presentations of that target. It appears to be an attentional phenomenon, a component of the searching image effect. It has been argued, however, that if searching image is an attentional process, sequential priming should also interfere with performance on subsequent nonprimed targets, and such interference has never been unequivocally demonstrated. In blue jays (Cyanocitta cristata) searching in an operant apparatus for targets derived from images of cryptic moths, detection performance was strongly facilitated in the course of a sequential prime but was relatively unaffected by sequences of mixed target types. Detection accuracy in subsequent probe trials was enhanced by priming with targets of the same type, whereas accuracy on cryptic probes following priming with a more conspicuous target was significantly degraded. The results support an attentional interpretation of searching image.  相似文献   

Created in Context: A Comparative Case Study of the Use of Music in Two Reggio Emilia-Inspired Schools     

Vanessa L. Bond 《Early Childhood Education Journal》2015,43(2):119-126

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Extension Agents and Conflict Narratives: A Case of Laikipia County,Kenya     

Jennifer Bond 《The Journal of Agricultural Education and Extension》2016,22(1):81-96

Purpose: This work investigated the narratives of development extensionists in relation to natural resource conflict, in order to understand the competing discourses surrounding the wicked problems of natural resource management in Laikipia County, Kenya.

Methodology: Q methodology was used to elicit the conflict narratives present among extension professionals. A concourse of 221 statements were devised from interviews and group discussions with key informants and a final sample of 49 statements was used for the sorting. Thirteen Q-sorts were undertaken with among rural extension professionals from government, non-government, faith-based and private organizations.

Findings: Four factors were elicited from the data, labelled—A: ‘Improved Leadership’; B: ‘Resource-centred conflict’; C: ‘Improved Governance’; and D: ‘Improved Management’.

Practical Implications: Narratives of neo-Malthusianism and pastoral ‘backwardness’ persist among extension professionals in Laikipia, thereby perpetuating the received wisdom of natural resource conflict. However, narratives of the human dimension of conflict are also evident where power, politics and socio-economic inequalities are at the fore of natural resource conflict.

Originality: This work contributes to a growing body of literature interested in the role of extension agents in conflict management. By applying Q methodology, this work has shown that while extension agents are involved in conflict management, their perceptions of these conflicts are subjective and have the potential to exacerbate conflict. Conflict management processes need to explicitly consider the conflicting and overlapping world views of extension agents if they are to act as process facilitators.  相似文献   

Developing mainstream resource provision for pupils with autism spectrum disorder: parent and pupil perceptions     

Judith Hebron  Caroline Bond 《欧洲特需教育杂志》2017,32(4):556-571

The diverse needs of pupils with autism spectrum disorder (ASD) have led to a continuum of educational provision being promoted in many countries, and which is often developed at a local level. The majority of children and young people with ASD in the UK attend mainstream schools, and resourced mainstream schools are increasingly part of this continuum of provision. These schools offer additional environmental modifications and adult support over and above that normally provided by mainstream schools. How parents and pupils perceive such provisions has not previously been investigated. The current study was designed to explore the perceptions of parents and pupils in five primary and three secondary resource provision schools in one Local Authority during the pupils’ first year at the provisions. A series of interviews took place with 16 parents and 9 pupils during this initial year. Data were analysed using inductive and deductive thematic analysis. Bronfenbrenner’s bio-ecosystemic theory was used to conceptualise and organise the complex interactions between home, local education systems, school systems and sub-systems, and their impact on pupil outcomes over time. Findings and implications are discussed in relation to theory and practice.  相似文献   

The role of amount consumed in flavor preexposure effects and neophobia     

Nigel W. Bond  R. F. Westbrook 《Learning & behavior》1982,10(4):511-515

Rats received either a small or a large amount of a novel saccharin solution prior to a conditioning episode in which the saccharin flavor was paired with lithium-induced toxicosis. When the time between the preexposure and the conditioning episode was 3.5 h, both the small and large amounts of saccharin decremented conditioning. However, when the time between the preexposure and the conditioning episode was 23.6 h, only the consumption of a large amount of saccharin decremented conditioning. In a second experiment, rats received either a short or a long exposure to the novel saccharin solution and were then given a choice test between the saccharin and water. Rats given the choice test immediately following their preexposure to saccharin avoided consuming it. If they received the choice test 4 h later, they consumed more of the saccharin irrespective of the length of the preexposure. In contrast, when they were given a choice test 24 h after the preexposure, only rats that had received a long preexposure displayed a significant preference for the saccharin. The present results demonstrate that the flavor preexposure effect and the attenuation of neophobia are both determined by the time between preexposure to the novel flavor and the conditioning episode or choice test and the amount of preexposure to the novel flavor. These findings are discussed in relation to the information-processing model developed by Wagner (1976, 1978) and are used to provide an account, in terms of this model, of the delay-gradient seen in flavor-aversion learning.  相似文献   

Disparate Impact and Teacher Certification   总被引：1，自引：0，他引：1  

Lloyd Bond 《Journal of Personnel Evaluation in Education》1998,12(2):211-220

To date, African–American teacher candidates certification rate has been significantly below that of non-Hispanic white candidates, and this differential has been consistent across all field tests and operational assessments. At issue is the source of the disparate impact observed. The article first discusses the distinction between disparate impact and bias in assessment. This is followed by a discussion of the five broad categories of sources of disparate impact (substantially differential rates of certification by subgroup): (1) demographic differences (such as candidates years of teaching experience or the number of advanced degrees earned), (2) recruitment differences (the system of incentives to volunteer for certification and other factors related to recruitment) that may have resulted in samples of African–American and non-Hispanic white candidates who differ systematically in teaching performance, (3) contextual differences in the conditions under which candidates teach (for example, the level of administrative, technical, or collegial support or other contextual factors that distinguish urban schools (where the majority of African–American teachers teach) from rural and suburban schools, (4) biases or deficiencies in the assessment process itself (for example, a standard of practice that privileges certain forms of teaching over others, exercises that contain biases that either disadvantage African–American candidates or, advantage white candidates, and deficiencies in training materials and the training of scorers), differential and (5) actual differences in teaching performance that have resulted from unequal educational opportunity, discrimination, and other social and historical forces. The evidence collected and analyzed to date by the National Boards Technical Analysis Group is reported, and other studies and analyses planned for the future are mentioned.  相似文献