Metabolic cost of running is greater on a treadmill with a stiffer running platform

Exercise testing on motorised treadmills provides valuable information about running performance and metabolism; however, the impact of treadmill type on these tests has not been investigated. This study compared the energy demand of running on two laboratory treadmills: an HP Cosmos (C) and a Quinton (Q) model, with the latter having a 4.5 times stiffer running platform. Twelve experienced runners ran identical bouts on these treadmills at a range of four submaximal velocities (reported data is for the velocity that approximated 75–81% VO_2max). The stiffer treadmill elicited higher oxygen consumption (C: 46.7 ± 3.8; Q: 50.1 ± 4.3 ml·kg^?1 · min^?1), energy expenditure (C: 16.0 ± 2.5; Q: 17.7 ± 2.9 kcal · min^?1), carbohydrate oxidation (C: 9.6 ± 3.1; Q: 13.0 ± 3.9 kcal · min^?1), heart rate (C: 155 ± 16; Q: 163 ± 16 beats · min^?1) and rating of perceived exertion (C: 13.8 ± 1.2; Q: 14.7 ± 1.2), but lower fat oxidation (C: 6.4 ± 2.3; Q: 4.6 ± 2.5 kcal · min^?1) (all analysis of variance treadmill comparisons P < 0.01). This study confirms that caution is required when comparing performance and metabolic results between different treadmills and suggests that treadmills will vary in their comparability to over-ground running depending on the running platform stiffness.     

THE JEWISH CHARITIES AND JEWISH EDUCATION

Introduction

The principal of an afternoon religious school is at the hub of the school's activities. It is quite likely that if the principal is performing adequately, then the school is functioning as it should. Therefore, it is imperative that the principal be evaluated on the basis of how well the principal performs assigned duties.     

Response to Intervention in Middle Schools: Practices and Outcomes

Response to intervention (RTI) is advocated in elementary school as a system‐wide, multitiered model of academic and behavioral interventions. Middle schools have begun adopting RTI models based on these existing elementary models. This investigation into current middle school RTI practices describes technical aspects as well as some of cultural and contextual issues surrounding implementation. The study included multiple data collection procedures including surveys, discussion groups, phone interviews, and site visits. Although many schools reported substantial progress with implementation, they recognized rigorous implementation of RTI posed such on‐going challenges as changes in staffing, curricular realignments, very limited selections of screening and progress monitoring tools aligned with their curriculum, and scheduling of secondary and tertiary level interventions.     

Students' understandings about animal skeletons

Surprisingly few studies have looked at people's understanding of skeletons. Most of the work in this field that has been done has only involved children's understanding of human skeletons. This study looks at students' understandings of the structure of animal (including human) skeletons. A crosssectional approach was used involving a total of 175 students in England from six different age groups (ranging from 4 year olds to 20 year olds). Students were presented, on separate occasions, with specimens of a brown rat, a starling and a herring and asked to draw what they thought was inside each specimen. On a final occasion, they were also asked to draw what they thought was inside themselves. Repeated inspections of the completed drawings allowed us to construct a seven point scale of 'skeletal understanding'. Our analysis shows the extent to which student understanding increases with age and the degree to which pupils know more about human than other skeletons. The findings are interpreted with reference to current trends in English science curricula and pedagogy. We comment in particular on the current inability of most students to see the skeleton as a functional, integrated whole.     

Reflective peer coaching: Crafting collaborative self-assessment in teaching

Reflective peer coaching is a formative model for improving teaching and learning by examining intentions prior to teaching, then reflecting upon the experience. The goal of reflective peer coaching is to promote self-assessment and collaboration for better teaching and ultimately better learning. There are obvious benefits to colleagues collaborating and sharing ideas, thoughts, and observations. However, many models of assessing teaching effectiveness focus on summative evaluation in which colleagues observe each other once or twice a year and fill out institutional evaluation forms. Rarely do colleagues engage in formative conversations about teaching that are guided by the instructor's personal goals and objectives. Reflective peer coaching necessitates a ten-minute planning conversation prior to the actual lesson and a ten-minute reflective conversation after the lesson. These conversations happen regularly and frequently to build self-awareness and self-assessment of the personal craft of teaching. The following article outlines the dynamics of the reflective peer coaching process as a formative assessment model that leads to better learning through improved teaching.