Considerations of force plate transitions on centre of pressure calculation for maximal velocity sprint running     

Timothy A. Exell  Marianne J.R. Gittoes  Gareth Irwin  David G. Kerwin 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(4):532-541

The aims of this study were to evaluate the accuracy of centre of pressure (COP) data obtained during transition of load across the boundary between two force plates, and secondly to examine the effect of such COP data on joint kinetics during sprint running performances. COP data were collected from two piezoelectric force plates as a trolley wheel was rolled across the boundary between the plates. Position data for the trolley were collected using an opto-electronic motion analysis system for comparison with COP data. Mean COP errors during transition across the plate boundary were 0.003 ± 0.002 m relative to a control point. Kinematic and kinetic data were also collected from eight athletes during sprint running trials to demonstrate the sensitivity of the inverse dynamics analysis to COP error for the ground contact phase of the dynamic movement trials. Kinetic sensitivity to the COP error was assessed during the entire stance phase for the ankle, knee, and hip joints and was less than 5% and 3% for joint moment and power data, respectively. Based on the small COP error during transition across plate boundaries, it is recommended that foot contacts overlapping two force plates may be included in inverse dynamics analyses.  相似文献   

大熊猫——中国的国宝     

Gareth Davey 《海外英语》2006,(5):44-45

本文由一位外籍老师撰写,喜爱大熊猫的他通过对我国大熊猫现状的调查,呼吁大家一起珍爱我们的国宝。  相似文献   

Book reviews     

Geraint Johnes  Gareth L. Williams 《Higher Education》1993,26(3):349-353

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Book reviews     

Sir Alex Smith  Norman Evans  Gareth Williams  F. R. Charmer  David R. McNamara  Edward T. Silva  John Heywood  A. M. Ross  P.G.A.  A.M.R. 《Higher Education》1982,11(4):485-496

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VINCE—an on-line tutorial tool for teaching introductory programming     

Glenn Rowe  & Gareth Thorburn 《British journal of educational technology : journal of the Council for Educational Technology》2000,31(4):359-369

We describe a tutorial tool which allows the execution of a C program to be graphically displayed. VINCE (Visual Instruction for Novices in a C Environment) is written in Java, allowing it to be used on the web. The student can enter their own C code, or select from a menu of pre-written tutorials, each illustrating a particular aspect of programming. The tool provides a simulated map of the computer's memory, showing where pointers and variables are stored. The map is dynamically updated as the program is executed. Explanatory notes for each step are provided. The program's function stack may be viewed. At present, the tool can only deal with syntactically correct C code. The package may be used at http://alife.mic.dundee.ac.uk/growe/VINCE/tutorial01.html  相似文献   

Eliciting and developing student's schema of classroom practices using a video-disc system     

Gareth Harvard  Mick Day  Richard Dunne 《British journal of educational technology : journal of the Council for Educational Technology》1994,25(1):4-18

In this paper we explore the potential of videodisc technology to develop student teachers'capacity to examine their judgements and reasoning critically about typical classroom events. We describe how the type of setting for such activities is committed to and successful at provoking quality collaborative learning. The videodisc system offers a range of exemplars of teaching which are carefully managed to challenge and extend students'existing ideas. We have adapted the key learning constructs of scaffolding and modelling of various strategies so that the intellectual processes of analysis and reconstruction are persistently attended to. In this way, we are designing a more powerful learning environment to support students in acquiring professionally relevant knowledge.  相似文献   

Relationships Between Teaching and Research in Higher Education in England   总被引：2，自引：0，他引：2  

Kelly Coate  Ronald Barnett  & Gareth Williams 《Higher Education Quarterly》2001,55(2):158-174

Although there is a popular conception that research enhances teaching, evidence of such synergistic relationships is inconclusive. Recent research, undertaken as part of the Higher Education Funding Council for England's (HEFCE) fundamental review of research policy and funding, indicated that there are a range of relationships – both positive and negative – between teaching and research. While the ideal relationship might be perceived by many academics to be a positive one, there are a number of factors that shape the ways in which teaching and research can have a negative influence on each other, or even be driven apart. These factors include pressures to compartmentalize teaching and research through accountability and funding mechanisms, management strategies of academic staff time that treat teaching and research separately, and the competition for scarce resources. If teaching and research are to complement each other, new ways of managing the teaching and research relationship need to be considered.  相似文献   

Effect of high-intensity interval training in adolescents with asthma: The eXercise for Asthma with Commando Joe's® (X4ACJ) trial     

Charles O.N. Winn  Kelly A. Mackintosh  William T.B. Eddolls  Gareth Stratton  Andrew M. Wilson  Melitta A. McNarry  Gwyneth A. Davies 《运动与健康科学(英文)》2021,10(4):488

BackgroundHigher levels of cardiorespiratory fitness are associated with reduced asthma severity and increased quality of life in those with asthma. Therefore, the purpose of this study was to evaluate the effectiveness of a 6-month high-intensity interval training (HIIT) intervention in adolescents with and without asthma.MethodsA total of 616 adolescents (334 boys; 13.0 ± 1.1 years, 1.57 ± 0.10 m, 52.6 ± 12.9 kg, mean ± SD), including 155 with asthma (78 boys), were recruited as part of a randomized controlled trial from 5 schools (4 control and 1 intervention). The 221 intervention participants (116 boys; 47 asthma) completed 6 months of school-based HIIT (30 min, 3 times per week, 10–30 s bouts at >90% age-predicted maximum heart rate with equal rest). At baseline, mid-intervention, post-intervention, and 3-month follow-up, measurements for 20-m shuttle run, body mass index (BMI), lung function, Pediatric Quality of Life Inventory, Paediatric Asthma Quality of Life Questionnaire, and Asthma Control Questionnaire were collected. Additionally, 69 adolescents (39 boys (of the 36 with asthma there were 21 boys)) also completed an incremental ramp test. For analysis, each group''s data (intervention and control) were divided into those with and without asthma.ResultsParticipants with asthma did not differ from their peers in any parameter of aerobic fitness, at any time-point, but were characterized by a greater BMI. The intervention elicited a significant improvement in maximal aerobic fitness but no change in sub-maximal parameters of aerobic fitness, lung function, or quality of life irrespective of asthma status. Those in the intervention group maintained their BMI, whereas BMI significantly increased in the control group throughout the 6-month period.ConclusionHIIT represents an effective tool for improving aerobic fitness and maintaining BMI in adolescents, irrespective of asthma status. HIIT was well-tolerated by those with asthma, who evidenced a similar aerobic fitness to their healthy peers and responded equally well to a HIIT program.  相似文献   

Conceptualising Curriculum Change     

Ronald Barnett  Gareth Parry  Kelly Coate 《Teaching in Higher Education》2013,18(4):435-449

Recent developments in UK higher education are turning attention to the undergraduate curriculum. Drawing on Lyotard's concept of performativity, this paper explores broad patterns of curriculum change in five subject areas. The curriculum is understood as an educational project forming identities founded in three domains: knowledge, action and self. Curriculum models are proposed that identify these components and their relationships with each other. The evidence suggests that the weightings and levels of integration of these components vary between the sciences and technology subjects, the arts and humanities, and professional courses. Attempts to develop curriculum strategies should take account of the patterns of curriculum components as they vary between the subject areas.  相似文献   

Exploring opportunities available and perceived barriers to physical activity engagement in children and young people with Down syndrome     

Samantha J. Downs  Lynne M. Boddy  Zoe R. Knowles  Stuart J. Fairclough  Gareth Stratton 《欧洲特需教育杂志》2013,28(3):270-287

Primary objective: The aim of this study was to explore physical activity (PA) amongst children and young people with Down syndrome (DS). Method and procedures: The youth physical activity promotion model (YPAP) was used to inform semi-structured interviews to explore PA of children and young people with DS. Participants were three males and five females, aged between 6 and 21?years (16.38?+?5.04?years (mean?+?SD)) who had been diagnosed with the condition DS. Dyadic interviews were conducted with the participant and their parent(s). The interviews were recorded and transcribed, and inductive and deductive analyses of the data were completed. Main outcomes and results: The results were structured around the YPAP Model’s key themes included: enabling factors (seasonal variation, transport, type of activity and independence); predisposing factors (enjoyment, social interaction, dislikes of PA, following instructions, and understanding of PA); reinforcing factors (support and opportunities, parents, and care providers); and barriers to PA engagement (ear problems). Conclusion: The children and young people with DS in the study typically only engaged in fun, unstructured activities. Key facilitators for PA participation were social interactions and parental support. Increasing the level of independence for people with DS within adolescence may have beneficial effects for PA participation in later life.  相似文献