Can sit-to-stand muscle power explain the ability to perform functional tasks in adults with severe obesity?     

Samuel T. Orange  Phil Marshall  Leigh A. Madden  Rebecca V. Vince 《Journal of sports sciences》2019,37(11):1227-1234

This study examined the relationship between sit-to-stand (STS) power and physical function in adults with severe obesity. Thirty-eight adults (age: 44 ± 12 years; body mass index [BMI]: 45.2 ± 7.8 kg/m²) completed evaluations of STS power, strength and functional performance. STS power was measured with a wearable inertial sensor, strength was assessed with the isometric mid-thigh pull, and function was measured with the timed up-and-go (TUG), six-minute walk test (6MWT) and 30-s chair STS. Power and strength (normalised to body mass) entered regression models in addition to age, gender, BMI and physical activity (daily step count). Power displayed large univariate associations with TUG (r = 0.50) and 30-s chair STS (r = 0.67), and a moderate association with 6MWT (r = 0.49). Forward stepwise regression revealed that power independently contributed to TUG (β = ?0.40, p = 0.010), 30-s chair STS (β = 0.67, p < 0.001) and 6MWT performance (β = 0.27, p = 0.007). Power also appeared to be a superior determinant of function compared with strength. Power generated via the STS transfer largely underpins the ability to perform functional tasks in adults with severe obesity, although intervention studies are required to investigate a potentially causal relationship.  相似文献   

The biomechanical characteristics of high-performance endurance running     

Stephen J. Preece  Christopher Bramah  Duncan Mason 《European Journal of Sport Science》2019,19(6):784-792

The biomechanical profile of high-level endurance runners may represent a useful model that could be used for developing training programmes designed to improve running style. This study, therefore, sought to compare the biomechanical characteristics of high-performance and recreational runners. Kinematic and kinetic measurements were taken during overground running from a cohort of 14 high-performance (8 male) and 14 recreational (8 male) runners, at four speeds ranging from 3.3 to 5.6?m?s^?1. Two-way ANOVA analysis was then used to explore group and speed effects and principal component analysis used to explore the interdependence of the tested variables. The data showed the high-performance runners to have a gait style characterised by an increased vertical velocity of the centre of mass and a flight time that was 11% longer than the recreational group. The high-performance group were also observed to adopt a forefoot strike pattern, to contact the ground with their foot closer to their body and to have a larger ankle moment. Importantly, although observed group differences were mostly independent of speed, the tested variables showed a high degree of interdependence suggesting an underlying unitary phenomenon. This is the first study to compare high-performance and recreational runners across a full range of kinematic and kinetic variables. The results suggest that high-performance runners maintain stride length with a prolonged aerial phase, rather than by landing with a more extended knee. These findings motivate future intervention studies that should investigate whether recreational runners could benefit from instruction to decrease shank inclination at foot contact.  相似文献   

Health information practice: integrating,inspiring and innovating          下载免费PDF全文

Audrey Marshall 《Health information and libraries journal》2017,34(4):300-302

The 2017 virtual issue of the Health Information and Libraries Journal (HILJ) is published to link to the 12th International Congress on Medical Librarianship and the 2017 EAHIL Workshop taking place in Dublin, Ireland on 12–16 June 2017. The conference title is Diversity in Practice: integrating, inspiring and innovative and it is exploring how health science librarianship, in all its diversity, is integrating, inspiring and innovating practice. These themes have been used to compile this virtual issue, which contains published articles selected from HILJ from the June 2014 issue through to September 2016. The virtual issue mirrors the format of a regular issue of HILJ, namely a review article, six original articles and our three regular features: ‘Dissertations into Practice’, ‘International Perspectives and Initiatives’ and ‘Teaching and Learning in Action’. All articles included in this virtual issue are available free online.  相似文献   

准备好应用网络教育的明日教师（上）   总被引：8，自引：0，他引：8  

Robert T.Plants  丁兴富 《开放教育研究》2003,(1):8-11

全球网（www.World Wide Wde)对教育系统的潜在冲击几乎是无限的。然而，如果我们的教师不具备适当的应用网络的知识和技能，实现的冲击会比可能的要小。证据表明，我们的教师需要培训，以便能够有效利用强大的在线资源，培养我们的孩子在数字社会中自我发展的能力。本文的目的在于探讨基于网络的教学对教师教育计划的冲击。  相似文献   

Globalized e-learning cultural challenges – Edited by Andrea Edmundson     

Robin Mason   《British journal of educational technology : journal of the Council for Educational Technology》2007,38(3):548-549

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Problems of Interdisciplinarity: Evidence‐Based and/or Artist‐Led Research?     

Rachel Mason 《The International Journal of Art & Design Education》2008,27(3):279-292

Art education as a distinct academic discipline is relatively recent and closely related to the growth of specialist teacher qualification programmes in university education departments. Opportunities for art teachers to engage in research were first provided in advanced diploma courses and specialist masters programmes set up in university education departments. Later these were followed by specialist doctoral degrees. Since the majority of such programmes are located in education departments, research training has tended to be social science based. Recently there has been a flurry of publications by art and art education specialists devoted to explaining and extolling the idea of art practice as an alternative paradigm. This article analyses and discusses this development and the status of research in the specialist field, drawing on the author's recent experience of carrying out two systematic reviews of studies in art education. It examines strengths and weaknesses in the two research paradigms and suggests ways forward for improving training in art education research.  相似文献   

A QUALITATIVE STUDY OF FACILITATORS AND BARRIERS RELATED TO COMPREHENSIVE AND INTEGRATED SCHOOL PSYCHOLOGICAL SERVICES     

Jose M. Castillo  Jennifer R. Wolgemuth  Chris Barclay  Amira Mattison  Sim Yin Tan  Sujay Sabnis  Amber Brundage  Leslie Marshall 《Psychology in the schools》2016,53(6):641-658

Recent studies indicate that the majority of school psychologists’ time continues to be dedicated to SPED related activities. Despite ongoing calls for school psychologists to expand their roles, why many practitioners do not deliver more comprehensive services is not well understood. This qualitative study investigated facilitators of and barriers to comprehensive and integrated services using the National Association of School Psychologists Model for Comprehensive and Integrated School Psychological Services as the guiding framework. Thirteen full‐time, school‐based practitioners from across the US participated in semi‐structured interviews. Constant‐comparative analysis was used to generate themes. Results indicated that practitioners experienced a number of systemic barriers to (e.g., heavy caseload; inconsistent district policies, priorities, and role definitions; lack of stakeholder involvement) and facilitators of (e.g., resources, graduate training and professional development) comprehensive and integrated service delivery. Participants’ perspectives regarding changes needed to expand their services focused on systemic issues as well. Implications for research and practitioners’ efforts to advocate for systems change are discussed.  相似文献   

Complexity Theory and the Philosophy of Education     

Mark  Mason 《Educational Philosophy and Theory》2008,40(1):4-18

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Evaluating fifth- and sixth-grade students’ expository writing: task development, scoring, and psychometric issues   总被引：1，自引：0，他引：1  

Jonna M. Kulikowich  Linda H. Mason  Scott W. Brown 《Reading and writing》2008,21(1-2):153-175

Drawing from multiple theoretical frameworks representing cognitive and educational psychology, we present a writing task and scoring system for measurement of students’ informative writing. Participants in this study were 72 fifth- and sixth-grade students who wrote compositions describing real-world problems and how mathematics, science, and social studies information could be used to solve those problems. Of the 72 students, 69 were able to craft a cohesive response that not only demonstrated planning in writing structure but also elaboration of relevant knowledge in one or more domains. Many-facet Rasch Modeling (MFRM) techniques were used to examine the reliability and validity of scores for the writing rating scale. Additionally, comparison of fifth- and sixth-grade responses supported the validity of scores, as did the results of a correlational analysis with scores from an overall interest measure. Recommendations for improving writing scoring systems based on the findings of this investigation are provided.  相似文献   

System simplification and control system design: Applications of the two-step iterative algorithm of Shoji     

S.A. Marshall 《Journal of The Franklin Institute》1983,316(4):327-338

A detailed appraisal of the usefulness of reduced order systems produced by the two-step iterative algorithm of Shoji, J. Franklin Inst., Vol. 310, pp. 155–188, 1980; J. Franklin Inst., Vol. 313, pp. 267-271, 1982, in control system design is presented. In this appraisal, application of the method to four systems is considered and the results compared with those obtained by Marshall Int. J. Control, Vol. 31, pp. 677–690, 1980. Since two of the systems contain complex poles it was found necessary to adapt the Shoji method accordingly.  相似文献