An examination of treadmill running familiarisation in barefoot and shod conditions in healthy men

Running on a treadmill is an activity that is novel to many people. Thus, a familiarisation period may be required before reliable and valid determinations of biomechanical parameters can be made. The current study investigated the time required for treadmill familiarisation under barefoot and shod running conditions. Twenty-six healthy men, who were inexperienced in treadmill running, were randomly allocated to run barefoot or shod for 20 minutes on a treadmill at a self-selected comfortable pace. Sagittal-plane kinematics for the ankle, knee and hip, and ground reaction force and spatio-temporal data were collected at two-minute intervals. For the barefoot condition, temporal differences were observed in peak hip flexion and peak knee flexion during swing. For the shod condition, temporal differences were observed for peak vertical ground reaction force. No temporal differences were observed after 8 minutes for either condition. Reliability analysis revealed high levels of consistency (ICC > 0.90) across all consecutive time-points for all dependent variables for both conditions after 8 minutes with the exception of maximal initial vertical ground reaction force loading rate. Participants in both barefoot and shod groups were therefore considered familiarised to treadmill running after 8 minutes.     

The Impact of Vertical Scaling Decisions on Growth Interpretations

Most growth models implicitly assume that test scores have been vertically scaled. What may not be widely appreciated are the different choices that must be made when creating a vertical score scale. In this paper empirical patterns of growth in student achievement are compared as a function of different approaches to creating a vertical scale. Longitudinal item‐level data from a standardized reading test are analyzed for two cohorts of students between Grades 3 and 6 and Grades 4 and 7 for the entire state of Colorado from 2003 to 2006. Eight different vertical scales were established on the basis of choices made for three key variables: Item Response Theory modeling approach, linking approach, and ability estimation approach. It is shown that interpretations of empirical growth patterns appear to depend upon the extent to which a vertical scale has been effectively “stretched” or “compressed” by the psychometric decisions made to establish it. While all of the vertical scales considered show patterns of decelerating growth across grade levels, there is little evidence of scale shrinkage.     

Trends in Performance and Growth by Students With and Without Disabilities on Five State Summative Assessments

Indicators of student academic growth are desired in state accountability systems in order to approximate student learning over time and attribute observed growth to schooling inputs. Through an extant analysis of five states’ assessment data, this study offers evidence about whether longitudinal match rates and measures of growth differ at the state level for students with disabilities, relative to students without disabilities. There were three main findings: 1) In states in which a modified assessment was offered, students with disabilities were more likely to have missing prior year scores, and consequently missing growth scores; 2) Low scoring students, many of whom had a disability, were more likely to have missing prior scores on the state general assessment, and consequently missing growth scores; 3) Students with and without disabilities showed similar growth using transition and gain score definitions of growth, but students with disabilities had lower growth when estimated via a regression-based model. Measurement and policy considerations are discussed.     

Physical activity estimated by the bone-specific physical activity questionnaire is also associated with cardiovascular risk

The nature of physical activity that benefits bone is traditionally thought to differ from that benefiting cardiovascular health. Accordingly, exercise recommendations for improving bone health and cardiovascular health are largely incongruent. Our aim was to determine the associations between high-impact physical activity participation and both cardiovascular disease risk factors and bone mass. We recruited 94 men and women (age 34.0?±?13.3 years) to undergo measures of cardiovascular disease risk (BMI, total cholesterol, fasting blood glucose, waist-to-hip ratio, and mean arterial pressure) and dual-energy X-ray absorptiometry (DXA XR-800, Norland) measures of bone mass (femoral neck, lumbar spine, and whole body BMD) and body composition (whole body lean mass and fat mass). Physical activity participation was estimated using the bone-specific physical activity questionnaire (BPAQ). Those in the upper tertile for current BPAQ score exhibited lower total cholesterol, waist-to-hip ratio, and mean arterial pressure than those in the lower tertiles (P?r?=??0.49 to 0.29, P?P?=?0.008), with BPAQ score predicting 6% of the variance in BMD (P?=?0.02). We conclude that high-impact physical activity as captured by the BPAQ may be beneficial for both bone health and for attenuating cardiovascular disease risk.     

Collaborative Staff Development

This article discusses a facilitative and collaborative model of teaching development in higher education. It explores the effectiveness of such a model in the light of the staff (faculty) development literature and the authors' five years of experience in its application through the TRAC (Teaching, Reflection and Collaboration) network facilitated by the Academic Staff Development Unit (ASDU) at the Queensland University of Technology (QUT), Australia.Denise C. Scott received her B.A. and M.Ed.St. from the University of Queensland and is a Lecturer in Teaching and Learning (Higher Education) at the Queensland University of Technology in Australia (QUT). She coordinates the TRAC (Teaching Reflection and Collaboration) Network for the Academic Staff Development Unit at QUT and has a particular interest in the role of collaboration and interaciton in learning. Patricia A. Weeks received her Ph.D. from Queensland University of Technology in the area of Professional Development, and she is a Senior Lecturer in the Academic Staff Development Unit at QUT. She coordinates the Graduate Certificate in Education (Higher Education) offered to lecturers at QUT and also teaches a unit within the course entitled The Reflective Practitioner. She consults on issues related to teaching and learning, and her special interests are in action research, narrative inquiry, and models of reflective practice.     

20世纪本科生医学教育中的基础医学课程

本文论述了过去100年中基础医学科学在本科生医学课程中的作用和课程改革,讨论了进入21世纪之际仍然反映在医学教育中科学与技艺之间的紧张关系。     

Proving the proverbial gadfly: situating the historical and racial context of Southern medical works by Mary Louise Marshall

Health sciences librarianship has historically benefited from avoiding critical conversations around the role of race in the profession, reflected through a select few number of articles on the topic. The purpose of this study was to add to this body of literature and apply a critical librarianship framework on the early scholarly record of health sciences librarianship and the legacy of integration within the Medical Library Association (MLA). Three Southern medical works and the integration views of Mary Louise Marshall, the longest-serving president of MLA from 1941 to 1946, were thematically and textually analyzed to redress the profession''s long-standing legacy with Whiteness and Black, Indigenous, and People of Color (BIPOC) representation. In reframing the historic past of MLA both through Marshall''s works and her views, the goal is to acknowledge ways in which the profession has impeded progress and present steps to remedy appropriate outreach for the future.     

The Symbiosis of News Coverage and Aggregate Online Search Behavior: Obama,Rumors, and Presidential Politics

Using a relatively new approach, this study examines the agenda-setting effects of television and newspaper coverage of a prominent rumor from the 2008 presidential election: the rumor that Barack Obama was secretly Muslim. In doing so, we look at the relationship between online information-seeking behavior and mass media news coverage, expecting online behavior, such as search, to be a function of exposure to conventional news coverage rather than vice versa. Using Google search trends as a novel search behavior measure, we demonstrate that volume of news coverage positively predicts spikes in aggregate search.