Effects of pomegranate extract on blood flow and vessel diameter after high-intensity exercise in young,healthy adults     

Erica J. Roelofs  Eric T. Trexler  Katie R. Hirsch  Meredith G. Mock 《European Journal of Sport Science》2017,17(3):317-325

The effects of pomegranate extract (PE) supplementation were evaluated on high-intensity exercise performance, blood flow, vessel diameter, oxygen saturation (SPO₂), heart rate (HR), and blood pressure (BP). In a randomized, crossover design, nineteen recreationally resistance-trained participants were randomly assigned to PE (1000?mg) or placebo (PL), which were consumed 30?min prior to a repeated sprint ability (RSA) test and repetitions to fatigue (RTF) on bench and leg press. The RSA consisted of ten six-second sprints on a friction-loaded cycle ergometer with 30?s recovery. Brachial artery blood flow and vessel diameter were assessed by ultrasound. Blood flow, vessel diameter, SPO₂, HR, and BP were assessed at baseline, 30?min post ingestion, immediately post exercise (IPost), and 30?min post exercise (30minPost). With PE, blood flow significantly increased IPost RSA (mean difference?=?18.49?mL?min^?1; P?<?.05), and IPost and 30minPost RTF (P?<?.05) according to confidence intervals (CI). Vessel diameter increased significantly 30minPost RSA according to CI and resulted in a significant interaction IPost and 30minPost RTF (P?<?.05). With PE, according to CI, average and peak power output increased significantly in sprint 5 of the RSA (P?<?.05). There was no significant difference between PE and PL for bench (P?=?.25) or leg press (P?=?.15) repetitions. Acute PE supplementation enhanced vessel diameter and blood flow, suggesting possible exercise performance enhancement from increased delivery of substrates and oxygen. The acute timing and capsule form of PE may be advantageous to athletic populations due to ergogenic effects, taste, and convenience.  相似文献   

A Good Death – Can the Concept Be Applied to Anatomy?     

Claire F. Smith  Dasha L. Alderton  Katie M. Clifford  Geoffrey Wells 《Anatomical sciences education》2020,13(5):657-663

The importance of patient-centered decisions is embedded throughout clinical practice. The principle that the patient is at the center of all decisions has helped form the contemporary approach to death and dying. The concept of a “good death” will naturally mean different things to different individuals, but is based on the foundation of being pain free, comfortable, and able to make informed decisions. Potential donors are faced with many personal, ethical, and often spiritual considerations when they come to think about their wishes after death. One consideration is that of a “good death.” This article explores how the concept of a “good death” may be applied to anatomy. Where first-person consent is in place, the motivating factors frequently include the wish for others to learn from the donation, and this notion may form part of the “good death” for the donor. Such motivations may impact positively on how students feel about dissecting and may provide comfort, assuaging feelings of discomfort, and allowing students to focus on anatomical learning. For donors where second-person consent is in place, the concept of a “good death” must depend on whether the individual wanted to donate their body in the first instance. The notion of a “bad death” may also be considered with body donation where no consent for donation is in place. This article proposes that there is ultimately a place for the concept that a “good death” may involve an individual donating their body to medical education.  相似文献   

Green "Angels in America": aesthetics of equity     

Hogan K 《Journal of American culture (Malden, Mass. : 2003)》2012,35(1):4-14

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Construct validation of physical activity surveys in culturally diverse older adults: a comparison of four commonly used questionnaires     

Moore DS  Ellis R  Allen PD  Cherry KE  Monroe PA  O'Neil CE  Wood RH 《Research quarterly for exercise and sport》2008,79(1):42-50

The purpose of this study was to establish validity evidence of four physical activity (PA) questionnaires in culturally diverse older adults by comparing self-report PA with performance-based physical function. Participants were 54 older adults who completed the Continuous Scale Physical Functional Performance 10-item Test (CS-PFP10), Physical Activity Scale for the Elderly (PASE), HAMPS Physical Activity Questionnaire for Older Adults, Yale Physical Activity Survey (YPAS), and modified Baecke questionnaire. The total PASE score, three outcome scores for the CHAMPS, and three summary indices for the YPAS were significantly correlated with total CS-PFP10 score. The modified Baecke exhibited no correlations with CS-PFP10 scores. The PASE, CHAMPS, and YPAS appear to be the most valid PA self-report questionnaires for culturally diverse older adults.  相似文献   

Quality assurance of assessment and moderation discourses involving sessional staff     

Peter Grainger  Lenore Adie  Katie Weir 《Assessment & Evaluation in Higher Education》2016,41(4):548-559

Quality assurance is a major agenda in tertiary education. The casualisation of academic work, especially in teaching, is also a quality assurance issue. Casual or sessional staff members teach and assess more than 50% of all university courses in Australia, and yet the research in relation to the role sessional staff play in quality assurance of student assessment outcomes is scarce. Moderation processes are a pivotal part of robust quality assurance measures. Drawing upon previous work surrounding four discourses of moderation, this pilot project reports the results of research into the role and impact of sessional staff in moderation processes at tertiary level. Qualitative data were gathered through focus interviews. Results, in the form of various moderation discourses, indicate that sessional staff impact the formal quality assurance processes in numerous ways.  相似文献   

Spring fever: process evaluation of a sex and relationships education programme for primary school pupils     

Katie V. Newby  Sara Mathieu-Chartier 《Sex education》2018,18(1):90-106

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Sensitivity Analysis of the No-Omitted Confounder Assumption in Latent Growth Curve Mediation Models     

Davood Tofighi  Yu-Yu Hsiao  Eric S. Kruger  David P. MacKinnon  M. Lee Van Horn  Katie Witkiewitz 《Structural equation modeling》2019,26(1):94-109

Latent growth curve mediation models are increasingly used to assess mechanisms of behavior change. For latent growth mediation model, like any another mediation model, even with random treatment assignment, a critical but untestable assumption for valid and unbiased estimates of the indirect effects is that there should be no omitted variable that confounds indirect effects. One way to address this untestable assumption is to conduct sensitivity analysis to assess whether the inference about an indirect effect would change under varying degrees of confounding bias. We developed a sensitivity analysis technique for a latent growth curve mediation model. We compute the biasing effect of confounding on point and confidence interval estimates of the indirect effects in a structural equation modeling framework. We illustrate sensitivity plots to visualize the effects of confounding on each indirect effect and present an empirical example to illustrate the application of the sensitivity analysis.  相似文献   

Assessing children's perceptions of prosocial and antisocial peer behaviour     

David Warden  Bill Cheyne  Donald Christie  Helen Fitzpatrick  Katie Reid 《教育心理学》2003,23(5):547-567

The aims of this study were to administer an assessment measure that would identify prosocial children, bullies and their victims, and to examine the underlying structure of children's perceptions of peer social behaviour in these three groups. Three versions (peer nomination, self and teacher rating) of a newly developed child social behaviour questionnaire (CSBQ) were completed by children (aged 9/10 years, n=321) and their teachers in 14 Scottish primary schools. The CSBQ is distinguished from other extant measures by its joint focus on both prosocial and antisocial child behaviours, and by its use of concrete and empirically derived items. In conjunction with sociometric data, which was also elicited from the children, the CSBQ yielded scores on 12 behavioural dimensions. Based upon the peer nomination data, a set of rigorous criteria, capable of reliably identifying children in the three groups, was developed to take account of varying peer nomination practices within and between schools. Factor analysis of the 12 measures yielded four factors (two antisocial factors, a prosocial factor and a victim factor) which accounted for 71% of the variance, and which offer further insight into the organisation of children's perceptions of social behaviour. Gender differences in peer nomination patterns and comparisons between the different informant groups are discussed in relation to previous work.  相似文献   

Practitioners' perspectives and experiences of supporting bilingual pupils on the autism spectrum in two linguistically different educational settings     

Katie B. Howard  Napoleon Katsos  Jenny L. Gibson 《British Educational Research Journal》2021,47(2):427-449

With greater linguistic diversity in educational settings around the world as a result of international migration, and a rise in autism diagnoses, educators are more frequently teaching children who are both neurodiverse and linguistically different to their peers. The aim of the present study was to uncover the perspectives and experiences of educational practitioners who provide support for bilingual learners on the autism spectrum in two linguistically different educational settings: England and Wales. Semi-structured interviews were conducted with 13 practitioners (5 teachers, 4 teaching assistants, 3 special educational needs coordinators and 1 speech and language therapist) working in mainstream schools. Data were analysed using interpretative phenomenological analysis (IPA), which seeks to illuminate participants' lived experience. Three superordinate themes were extracted from the data: (1) perspectives on bilingualism in autism; (2) comparisons across two linguistically different settings; (3) creating inclusive learning environments. The results demonstrate that practitioners had concerns about the feasibility of bilingualism for some autistic pupils, and argued that exposure to two languages may have a negative impact on their development. Future research should focus on finding effective ways to identify and support learning needs among bilingual pupils to ensure that children who are ‘doubly different’ from their peers not only have access to educational provision, but also have opportunities to harness and celebrate their differences.  相似文献   

Thinking with Posthuman Perspectives in Self-Study Research     

Katie Strom  Tammy Mills  Linda Abrams  Charity Dacey 《Studying Teacher Education》2018,14(2):141-155

In this study, we set out to explore processes of individual and group becomings of a self-study collective over time and distance, and with/through technology. Born out of a self-study project in one of our early doctoral courses, our self-study community has evolved over several years to one that is hybrid in nature. As we have continued our collaboration through online media, a tension arose at the juncture of our fundamentally relational work together, our need for the physical, embodied aspect of learning and self-study and the hybrid, often disembodied, experience provided by substituting online meetings for those conducted in-person. In this article we explore these tensions through pivotal moments and lines of flight in our self-study work over the past year. To frame these moments, we draw on ideas from posthumanism, which offers ways to conceptualize our collective as a multiplicity, account for the relational and material aspects of our work, address the agency of non-human actors (such as technology) in our collaboration, and consider our self-study practice a dynamic, complex, contextualized, situated phenomenon.  相似文献