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41.
Joel T Fuller Dominic Thewlis Margarita D Tsiros Nicholas A.T Brown Jonathan D Buckley 《Journal of sports sciences》2016,34(18):1740-1745
The purpose of this study was to determine if minimalist shoes improve time trial performance of trained distance runners and if changes in running economy, shoe mass, stride length, stride rate and footfall pattern were related to any difference in performance. Twenty-six trained runners performed three 6-min sub-maximal treadmill runs at 11, 13 and 15 km·h?1 in minimalist and conventional shoes while running economy, stride length, stride rate and footfall pattern were assessed. They then performed a 5-km time trial. In the minimalist shoe, runners completed the trial in less time (effect size 0.20 ± 0.12), were more economical during sub-maximal running (effect size 0.33 ± 0.14) and decreased stride length (effect size 0.22 ± 0.10) and increased stride rate (effect size 0.22 ± 0.11). All but one runner ran with a rearfoot footfall in the minimalist shoe. Improvements in time trial performance were associated with improvements in running economy at 15 km·h?1 (r = 0.58), with 79% of the improved economy accounted for by reduced shoe mass (P < 0.05). The results suggest that running in minimalist shoes improves running economy and 5-km running performance. 相似文献
42.
Michael Simpson Dominic A. Carone William J. Burns Traci Seidman Doil Montgomery Alfred Sellers 《Psychology in the schools》2002,39(5):515-524
The Wechsler Intelligence Scale for Children–Third Edition (WISC‐III) and the Stanford‐Binet Intelligence Scale–Fourth Edition (SB‐IV), were administered to 20 gifted children and 20 non‐gifted children to examine the extent of the difference in IQ scores obtained on the two tests and whether order effects were present. Results show that the SB‐IV Composite Score was significantly higher than the WISC‐III Full Scale IQ for both groups. However, for the gifted group, unlike the non‐gifted group, this difference achieved significance only when the SB‐IV was administered first. When either IQ test was administered to the gifted students for the first time, without the confound of a learning influence, there was no significant difference in mean scores. However, when both tests were administered, it was found that the SB‐IV influenced the WISC‐III Full Scale IQ in a downward direction whereas the WISC‐III influenced the SB‐IV Composite Score in an upward direction. © 2002 Wiley Periodicals, Inc. 相似文献
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Chris Button Dominic Orth Keith Davids Ludovic Seifert 《European Journal of Sport Science》2018,18(8):1090-1099
Climbers often train on indoor climbing walls, which are modifiable to simulate features of outdoor climbing environments at different levels of difficulty. The aim of this study was to evaluate the influence of regularity of climbing holds on emergent perceptual-motor behaviours. Skilled climbers performed six repetitions of two topographically similar routes on an indoor climbing wall. One route was composed of 18 different types of hand holds (irregular route), whereas the other route had only two types of hand holds (regular route). Preview and climbing durations, as well as visual search behaviours, were recorded. Participants rated the regular route as more difficult to climb, requiring greater perceived effort to complete. The time spent previewing, and then climbing the routes, was reduced on average by 12% and 16%, respectively in the irregular route compared to the regular route. There were more fixations made when climbing the regular route (281 vs. 222 fixations per trial). It seems the climbers were more careful and thorough in their gaze behaviours with the regular route because of the additional technical demands it presented, whereas the irregular route afforded a more superficial visual exploration with use of more frequent saccades between holds. The findings suggest how irregularity in the environment is exploited by skilled climbers, apparently making the practice context easier to perceive and act in. 相似文献
45.
Joel T. Fuller Dominic Thewlis Margarita D. Tsiros Nicholas A. T. Brown Joseph Hamill Jonathan D. Buckley 《European Journal of Sport Science》2019,19(3):402-412
This study investigated whether male runners improve running performance, running economy, ankle plantar flexor strength, and alter running biomechanics and lower limb bone mineral density when gradually transitioning to using minimalist shoes for 100% of weekly running. The study was a planned follow-up of runners (n?=?50) who transitioned to minimalist or conventional shoes for 35% of weekly structured training in a previous 6-week randomised controlled trial. In that trial, running performance and economy improved more with minimalist shoes than conventional shoes. Runners in each group were instructed to continue running in their allocated shoe during their own preferred training programme for a further 20 weeks while increasing allocated shoe use to 100% of weekly training. At the 20-week follow-up, minimalist shoes did not affect performance (effect size: 0.19; p?=?0.218), running economy (effect size: ≤?0.24; p?≥?0.388), stride rate or length (effect size: ≤?0.12; p?≥?0.550), foot strike (effect size: ≤?0.25; p?≥?0.366), or bone mineral density (effect size: ≤?0.40; p?≥?0.319). Minimalist shoes increased plantar flexor strength more than conventional shoes when runners trained with greater mean weekly training distances (shoe*distance interaction: p?=?0.036). After greater improvements with minimalist shoes during the initial six weeks of a structured training programme, increasing minimalist shoe use from 35% to 100% over 20 weeks, when runners use their own preferred training programme, did not further improve performance, running economy or alter running biomechanics and lower limb bone mineral density. Minimalist shoes improved plantar flexor strength more than conventional shoes in runners with greater weekly training distances. 相似文献
46.
A Conceptual Framework for Learning to Teach Secondary Mathematics: A Situative Perspective 总被引:1,自引:1,他引:1
Dominic Peressini Hilda Borko Lew Romagnano Eric Knuth Christine Willis 《Educational Studies in Mathematics》2004,56(1):67-96
This paper offers for discussion and critique a conceptual framework that applies a situative perspective on learning to the
study of learning to teach mathematics. From this perspective, such learning occurs in many different situations -- mathematics
and teacher preparation courses, pre-service field experiences, and schools of employment. By participating over time in these
varied contexts, mathematics teachers refine their conceptions about their craft -- the big ideas of mathematics, mathematics-specific
pedagogy, and sense of self as a mathematics teacher. This framework guides a research project that traces the learning trajectories
of teachers from two reform-based teacher preparation programs into their early teaching careers. We provide two examples
from this research to illustrate how this framework has helped us understand the process of learning to teach.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
47.
The Sterkfontein Caves UNESCO World Heritage site represents one of South Africa’s most valuable cultural heritage resources and is one of the world’s most prolific palaeoanthropological sites with its fossiliferous deposits spanning the last 3.5 million years. One of the most famous fossil-bearing deposits at Sterkfontein is the 2.5 million-year-old Member 4. This is the world’s richest Australopithecus-bearing deposit and has yielded iconic fossils like StS 5 – Mrs Ples, StW 53, two partial skeletons, and two species of Australopithecus. After 80 years of research, Member 4 continues to provide crucial evidence for human origins research. Over the last 35 years, since excavation of the Member 4 started exposing the walls of the deposit, their deterioration has been accelerating. The implications of this deterioration and impending collapse are severe, not only from a palaeoanthropological perspective but also a heritage management point of view. This article focuses on our efforts to conserve the deteriorating areas of the Member 4 excavation site. The project required the development of a comprehensive set of strategies that had to be adapted to the specific requirements of the national and local heritage management agencies and remain sensitive to ongoing research programmes. The strategy developed included: multiscale integrative documentation of the exposed deposits; comprehensive, independent but cohesive stabilization of the different components of the deposit while maintaining visibility for ongoing and future research; and installation of stabilization infrastructure that could be adapted to the long-term conservation excavation plan while maintaining deposit integrity and site safety. 相似文献
48.
Against a background of increasing student eligibility for ‘access arrangements’ in examinations for the General Certificate of Secondary Education (GCSE), this article examines the processes within schools that structure a student's access to the provision of reading support, including staff and student viewpoints. Dominic Griffiths, who is a Senior Advisory Teacher with Tameside Local Authority Education Psychology and Learning Support Team, and Kevin Woods, who is a Senior Lecturer in Educational and Child Psychology at the University of Manchester, report upon a series of four case studies, each based within an urban secondary school offering some form of reading support to students in GCSE examinations. Each case study incorporates student interviews, observations of reading support in action, and interviews with staff who manage and provide reading support in examinations. Quantitative findings show an association between students' preferred mode of reading support and the location in which it is provided. Qualitative analyses revealed key themes relating to the dynamics of provision and use of reading support, including ‘student worthiness’, ‘relationships’ and ‘unfair advantage’. Recommendations are made for a more central role for student consultation within processes for providing reader support to GCSE examination candidates. 相似文献
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