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Natasha Schranz Grant Tomkinson Tim Olds Nathan Daniell 《Journal of sports sciences》2013,31(5):459-469
Abstract The aim of this study was to quantify the anthropometric differences between elite senior Australian rowers and the Australian adult population using three-dimensional (3D) whole-body scanning. The dimensions of senior rowers competing at the 2007–2008 Australian Rowing Championships were compared with those of an age-matched sample of Australian adults. Mass, height, and sitting height were measured before the participants underwent a 3D whole-body scan, with lengths, breadths, girths, cross-sectional and surface areas, and volumes extracted from each scan. Differences in means and variability between the two groups were expressed as standardized effect sizes and ratios of coefficients of variation. Heavyweight rowers were generally much larger than the general population in absolute size, with 3D dimensions and height and mass showing the largest effects. In contrast, lightweight rowers were generally similar or smaller in absolute and proportional size. The dimensions of rowers, especially the lightweights, were also generally less variable than those of the general population. The greatest differences between elite rowers and the general population were seen in dimensions that could not be captured without 3D scanning, such as segmental volumes and cross-sectional areas. 相似文献
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Grant R. Tomkinson Tetsuhiro Kidokoro Trevor J. Dufner Shingo Noi John S. Fitzgerald Holly M. Brown-Borg 《运动与健康科学(英文)》2021,10(4):462-469
BackgroundThe 6-minute walking distance (6MWD) is an excellent measure of both functional endurance and health. The primary aim of this study was to estimate temporal trends in 6MWD for older Japanese adults between 1998 and 2017; the secondary aim was to estimate concurrent trends in body size (i.e., height and mass) and self-reported participation in exercise/sport.MethodsAdults aged 65–79 years were included. Annual nationally representative 6MWD data (n = 103,505) for the entire period were obtained from the Japanese Ministry of Education, Culture, Sports, Science and Technology. Temporal trends in means (and relative frequencies) were estimated at the gender–age level by best-fitting sample-weighted linear/polynomial regression models, with national trends estimated by a post-stratified population-weighting procedure. Temporal trends in distributional variability were estimated as the ratio of coefficients of variation.ResultsBetween 1998 and 2017 there was a steady, moderate improvement in mean 6MWD (absolute = 45 m (95% confidence interval (95%CI): 43–47); percent = 8.0% (95%CI: 7.6%–8.4%); effect size = 0.51 (95%CI: 0.48–0.54)). Gender- and age-related temporal differences in means were negligible. Variability in 6MWD declined substantially (ratio of coefficients of variation = 0.89, 95%CI: 0.87–0.92), with declines larger for women compared to men, and for 75–79-year-olds compared to 65–74-year-olds. Correspondingly, there were moderate and negligible increases in mean height and mass, respectively, and negligible increases in the percentage who participated in exercise/sport at least 3 days per week and at least 30 min per session.ConclusionThere has been a steady, moderate improvement in mean 6MWD for older Japanese adults since 1998, which is suggestive of corresponding improvements in both functional endurance and health. The substantial decline in variability indicates that the temporal improvement in mean 6MWD was not uniform across the distribution. Trends in 6MWD are probably influenced by corresponding trends in body size and/or participation in exercise/sport. 相似文献
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M. Jenice Goldston Jeanelle Bland Day Cheryl Sundberg John Dantzler 《International Journal of Science and Mathematics Education》2010,8(4):633-648
The purpose of this paper is to describe the procedures and the analysis of an instrument designed to measure preservice teachers’
ability to develop appropriate 5E learning cycle lesson plans. The 5E inquiry lesson plan (ILP) rubric is comprised of 12 items with a scoring range of zero to four points per item. Content validity was determined
through the expertise of a panel of five science educators. Sixty six preservice teachers enrolled in elementary science methods
at three universities prepared lesson plans, which were scored by their instructors using the ILP rubric. Using a Pearson
two-tailed correlation, inter-rater reliability was established at a value of 0.83. An exploratory factor analysis provided
evidence of construct validity, with three factors. The factors included (1) explore, (2) engage/explain/elaborate, and (3)
evaluate. In addition, a secondary analysis revealed the means and standard deviations of the students' performance on each
of the phases of the 5E that include: engage, explore, explain, elaborate, and evaluate. The engage item held the highest
mean rating, and the evaluation items had the lowest mean ratings. Examination of the instrument's structure in light of the
5E phases is discussed and provides directions for future revisions and research. 相似文献
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Peter Kahn Richard Young Sue Grace Ruth Pilkington Linda Rush Bland Tomkinson 《International Journal for Academic Development》2013,18(3):161-173
The authors review research literature on coherent theoretically based approaches to the use of reflective processes within programmes of initial professional education for new academic staff. Employing a novel methodology that incorporates practitioner perspectives, they establish a framework that highlights the role of personal and social factors, and also pedagogic and theoretical considerations, in shaping reflective processes. The included studies identified participants who had engaged in certain categories of reflection. Certain fundamental outcomes, however, such as changes in professional commitment, were never seen across an entire cohort. The article thus discusses the intended learning outcomes that programmes might legitimately seek to meet. Dans cet article, nous examinons la littérature de recherche portant sur les approches théoriques cohérentes sur l’usage des processus réflexifs dans le cadre de programmes d’éducation professionnelle initiale pour le personnel académique novice. A l’aide d’une nouvelle méthodologie incorporant les perspectives du praticien, nous établissons un cadre qui met en lumière le rôle des facteurs sociaux et personnels, de même que les considérations théoriques et pédagogiques, mettant en forme les processus réflexifs. Les études visées par l’article ont permis d’identifier des participants s’étant engagés dans certaines catégories de réflexion. Des conséquences fondamentales, telles que le changement au niveau de l’engagement professionnel, n’ont cependant pas été observés pour l’ensemble de la cohorte. Nous discutons donc des objectifs d’apprentissage que les programmes pourraient, de façon légitime, chercher à atteindre. 相似文献
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Despite numerous studies examining nursing wages, very little attention has focused on nursing wage differentials. We build on previous research by modeling nursing wages and examining male–female wage differences within the context of the current nursing shortage. Our results show that male nurses do earn a wage premium, largely explained by employment as a nurse anesthetist, job satisfaction, and experience. Whether or not this differential indicates discrimination toward females in the US nursing labor market is unclear. Since males represent a small proportion of the nursing workforce, the time required for males to become prevalent in the nursing labor market and help ease the nursing shortage is unknown. Consequently, one must ask whether the male wage premium is sufficient to attract substantial numbers of men into nursing, and whether wages, in general, are sufficient to attract the requisite numbers of males and females into nursing to address the shortage ‘crisis’. 相似文献
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Paul Willis Robert Bland Louise Manka Cec Craft 《Educational Research and Evaluation》2013,19(2):173-185
Cross-age peer mentoring is an educational model that builds on peer support and mentoring to assist young people to enhance social relationships, develop cognitive skills, and promote positive identity development. In this article, we outline the evaluation process of a cross-age peer-mentoring program implemented in an Australian secondary school. This program had a distinctive focus on blending cross-age peer mentoring, academic tutoring, and social support roles. We focus on the program's consumers – the voices of Year 7 students (mentees) and Year 10 students (mentors). Student perspectives were gathered using qualitative methods through repeated focus groups. Data were thematically analysed, and the findings show observed changes in social relationships, problem-solving skills, and engagement with literacy. We discuss the importance of this relationship for effective learning and examine the reported changes to engagement with relationship building. Implications for developing whole-of-school support and increasing wider participation are discussed. 相似文献