The effect of short-duration sprint interval exercise on plasma postprandial triacylglycerol levels in young men     

Edward Allen  Partick Gray  Angeliki Kollias-Pearson  Erlend Oag  Katrina Pratt  Jennifer Henderson 《Journal of sports sciences》2013,31(10):911-916

Abstract

It is well established that regular exercise can reduce the risk of cardiovascular disease, although the most time-efficient exercise protocol to confer benefits has yet to be established. The aim of the current study was to determine the effects of short-duration sprint interval exercise on postprandial triacylglycerol. Fifteen healthy male participants completed two 2 day trials. On day 1, participants rested (control) or carried out twenty 6 s sprints, interspersed with 24 s recovery (sprint interval exercise – 14 min for total exercise session). On day 2, participants consumed a high-fat meal for breakfast with blood samples collected at baseline, 2 h and 4 h. Gas exchange was also measured at these time points. On day 2 of control and sprint interval exercise trials, there were no differences (P < 0.05) between trials in plasma glucose, triacylglycerol, insulin or respiratory exchange ratio (RER). The area under the curve for plasma triacylglycerol was 7.67 ± 2.37 mmol · l^–1.4 h^–1 in the control trial and 7.26 ± 2.49 mmol · l^–1.4 h^–1 in the sprint interval exercise trial. Although the sprint exercise protocol employed had no significant effect on postprandial triacylglycerol, there was a clear variability in responses that warrants further investigation.  相似文献   

Proactive Copyright: Workplace Compliance     

Katrina A. Meyer 《TechTrends》2009,53(3):9-11

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What’s Yours is Mine: An Investigation of Current Copyright Policies of Education Journals     

Katrina A. Meyer 《Innovative Higher Education》2009,34(1):3-18

This research investigated the current copyright policies of 21 education journals published by academic societies, universities and university presses, and commercial publishers. For the sample I chose only journals with a copyright policy on the journal or publisher web site, and I then analyzed the content of the policies in order to answer three research questions. (1) What is the nature of copyright for education journals? (2) What evidence exists for the adoption of various copyright innovations (e.g., use of Creative Commons, shared copyright)? (3) Is innovation widespread or limited to certain types of journals? The findings indicate that 16 journals (76%) had traditional “transfer of copyright” policies. However, five journals (24%) offered a range of innovations, including shared copyright, author-retained copyright, first publication rights, and use of Creative Commons licensing.  相似文献   

Development of 1-mile walk tests to estimate aerobic fitness in children     

Hoyong Sung  David N. Collier  Katrina D. DuBose  C. David Kemble 《Measurement in physical education and exercise science》2018,22(2):167-176

To examine the reliability and validity of 1-mile walk tests for estimation of aerobic fitness (VO_2max) in 10- to 13-year-old children and to cross-validate previously published equations. Participants (n = 61) walked 1-mile on two different days. Self-reported physical activity, demographic variables, and aerobic fitness were used in multiple regression analyses. Eight models were developed with various combinations of predictors. The recommended model for fitness testing in schools was: VO_2max = 120.702 + (4.114 × Sex [F = 0, M = 1]) – (2.918 × 1-mile Walk Time [min]) – (2.841 × Age), R = .73, standard error of estimate = 6.36 mL·kg^?1·min^?1. Cross-validation of previously published equations demonstrated lower correlations with measured VO_2max than the newly developed walk tests. Evidence of reliability and validity for 1-mile walk tests to estimate VO_2max in young children was provided. The model that included 1-mile walk time, age, and sex may be appropriate for youth fitness testing in physical education, particularly for unmotivated or overweight young children.  相似文献   

Interactions between educational therapist and child   总被引：3，自引：3，他引：0  

Katrina de Hirsch F.C.S.T. 《Annals of dyslexia》1977,27(1):88-101

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(En)gendering videogame development: A feminist approach to gender,education, and game studies     

Negin Dahya  Jennifer Jenson  Katrina Fong 《Review of Education, Pedagogy & Cultural Studies》2017,39(4):367-390

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Implementing Academic Choice: A Self-Study in Evolving Pedagogy     

Katrina E. Jones 《Studying Teacher Education》2015,11(2):143-163

The goal of this research is to examine how implementing a new pedagogical structure, Academic Choice, informs my understanding of my students as learners and individuals. Using a self-study methodology over the course of eight working sessions in my Kindergarten classroom, I collected multiple forms of qualitative data, including student work samples, focal student observations, structured interviews, and research journal entries containing my own reflections as well as notes on consultations with critical friends. These data were analyzed inductively by connecting observations and patterns from across these sources. Findings indicated that providing a choice in content allowed struggling students to self-differentiate, that one-on-one interactions were essential to understanding a student's choice and work process, and that advanced students needed support to challenge themselves. Furthermore, I found that developmental stage, time allotted for working, and social construction of knowledge were important factors to consider in structuring these working sessions.  相似文献   

The “virtual face” of institutions: Why legislators and other outsiders view higher education as aloof     

Katrina A. Meyer   《The Internet and Higher Education》2008,11(3-4):178

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Associations between school climate and student life satisfaction: resilience and bullying as mediating factors     

Aldridge  Jill M.  McChesney  Katrina  Afari  Ernest 《Learning Environments Research》2020,23(1):129-150

Learning Environments Research - Because adolescent life satisfaction is associated with important affective, behavioural and health-related outcomes during both adolescence and later life,...  相似文献   

Evaluating Computer-Based Test Accommodations for English Learners     

Katrina Crotts Roohr  Stephen G. Sireci 《Educational Assessment》2017,22(1):35-53

Test accommodations for English learners (ELs) are intended to reduce the language barrier and level the playing field, allowing ELs to better demonstrate their true proficiencies. Computer-based accommodations for ELs show promising results for leveling that field while also providing us with additional data to more closely investigate the validity and effectiveness of those accommodations. In this study, we evaluate differences across non-ELs and two EL groups in their decision to use either of two computer-based accommodations on high school history and math assessments. We also evaluate differences in response times across these groups. Results showed that ELs used accommodations more than non-ELs; however, many students did not use any accommodations, and use decreased as the assessment progressed. In addition, students had longer response time for items with accommodations in history but not mathematics. Recommendations for future research in accommodations for ELs are discussed.  相似文献