Effect of downhill running grade on lower extremity loading in female distance runners

ABSTRACT

Hill running is often used as a foundational training mechanism to build strength and speed. Distance runners in particular are at an increased likelihood of encountering steep hills during training runs. There is limited research regarding downhill running, and there is no research available on the biomechanics of females specifically during downhill running. The purpose of this study was to quantify the differences in loading when running downhill at different grades compared to a level surface in female distance runners to determine the potential risk for injury. Fifteen female distance runners (age: 23.5 ± 4.9 y), who ran 56.3 ± 20.9 km a week participated in this study. Participants ran on a force-instrumented treadmill at 4.0 m/s for 2 min at 0%, ?5%, ?10%, ?15%, and ?20% grades, with 5 min of rest between conditions. Study findings showed increased impact forces (p < 0.001), and increased loading rates (p < 0.001) with increasing downhill grades compared to level. These results indicate a significantly greater risk of overuse injury to the lower extremity with steeper downhill grades. Individuals need to be aware of these risks to plan and implement training programmes that will increase performance while minimising injury risk.     

Preparing the Next Generation of Science Teacher Educators: A Model for Developing PCK for Teaching Science Teachers

Science education doctoral programs often fail to address a critical piece—the explicit attention to the preparation of future science teacher educators. In this article, we argue that, in addition to developing skills and a knowledge base for research, doctoral students must be given the opportunity to observe, practice, and reflect on the pedagogical knowledge necessary to instruct science teachers. In particular, we contend that the construct of pedagogical content knowledge (PCK) can be adapted to the context of knowledge for teaching science teachers. We use the PCK construct to propose a model for the development of knowledge for teaching science teachers, grounded in our experiences as doctoral students and faculty mentors. We end by recommending a vision for doctoral preparation and a new standard to be included in the ASTE Professional Knowledge Standards for Science Teacher Educators.     

Social network analysis: a simple but powerful tool for identifying teacher leaders

Instructional teacher leadership is central to a vision of distributed leadership. However, identifying instructional teacher leaders can be a daunting task, particularly for administrators who find themselves either newly appointed or faced with high staff turnover. This article describes the use of social network analysis (SNA), a simple but powerful tool that can help administrators better understand the connectedness of their network and pinpoint influential individuals within it. We offer practical guidance for conducting SNA, generating and modifying a sociogram, and interpreting the resultant data. Additionally, we suggest that information provided by SNA may be used to inform decisions about school/district programmes and policies.     

‘Let’s work on your weaknesses’: Australian CrossFit coaching,masculinity and neoliberal framings of ‘health’ and ‘fitness’

CrossFit (CF) is one of the fastest growing exercise regimens in the world. However, sociologists have been relatively slow in examining the place of CF coaches in contemporary CF fitness culture. CF coaches are key figures in the production, promotion and consumption of CF fitness services. Therefore, coaches are a sociologically compelling group to examine. Drawing on interviews with male CF coaches in Tasmania, Australia, this paper argues that the way that CF coaches become qualified, interact with clients and understand ‘health’ and ‘fitness’ is shaped by the confluence of masculinity and neoliberalism. As CF grows in Australia alongside other fitness regimens, these findings pose a unique set of concerns for the Australian fitness industry, especially in relation to the ways that CF coaches translate the meaning and practice of ‘health’ and ‘fitness’ to their athletes.     

Interactions between student achievement orientation,locus of control,and two methods of college instruction

Are some methods of instruction more suited to some students than to others? Do students who seem to be motivated to achieve through independent action actually do better in classes that reward independent behavior? And do students whose orientation is more one of conformity actually do better in classes that reward conforming behavior? This study found some of the anticipated results — and the authors discuss how their findings can be applied in college settings. Results at variance with earlier findings also are discussed.     

Reconsidering SES and gender divides in literacy achievement: are the gaps across social class and gender necessary?

This study evaluated factors within families that enhance kindergarten reading readiness of children and are also linked to maternal education (a common proxy for SES). We were interested in identifying factors that would be more accessible to families and school administrators as sources of potential change than broad and un-malleable reflections of socio-economic status. Consistent with current research, we found that maternal education had a broad impact on the reading readiness of children. Maternal education was linked to the amount of time children spent with non-literary media (television, computers, videos, video games). Re-running analyses using time with media as a covariate resulted in reduced differences in reading outcomes of children as a function of maternal education. Effects of maternal education were reduced by the end of the kindergarten year, indicating that literacy programming implemented by the school was successful in closing this academic gap.     

Contextual Understandings in the TPACK Framework

The technological, pedagogical, and content knowledge (TPACK) framework considers the role of technology in teaching. Although TPACK is grounded in context, one limitation is the lack of understanding about the interactions between particular contexts, knowledge development, and instruction. This qualitative multiple-case study was designed to explore the contextual factors that contribute to teachers' development of technological, pedagogical, and content knowledge and practice. Researchers focused on the Catholic educational environment to develop a more refined understanding of specific, and unique, contextual factors within the TPACK framework. Individual case analysis of interview and observation data pointed toward microlevel, or teacher-centric, factors, including background, attitudes, and personal conceptualization of contemporary education, to be primary influences of the development and use of technological knowledge. Recommendations are made for educators to think about how changes in context influence the distinct overlapping components of the TPACK framework, and accordingly their individual TPACK. (Keywords: TPACK, educational technology, teacher practice, teacher context)     

Promoting Psychological Well-Being in an Urban School Using the Participatory Culture-Specific Intervention Model

School psychology has recently reconceptualized its service provision model to include multitiered systems of academic and psychosocial promotion, prevention, and intervention. The availability of evidence-based programs and advances in school consultation theory accompany the paradigm shift of the field. Despite these advances, implementing multitiered systems of support into school settings is teeming with challenges and often results in program abandonment. One often cited reason for such failures is the inattention to local priorities and culture. This article discusses the use of the participatory culture-specific intervention model (Nastasi, Moore, & Varjas, 2004 Nastasi, B. K., Moore, R. B., & Varjas, K. M. (2004). School-based mental health services: Creating comprehensive and culturally specific programs. Washington, DC: American Psychological Association.[Crossref] , [Google Scholar]) to build comprehensive systems of support in an elementary school in New Orleans. Co-authored by both researcher-consultants and school administrators, the article highlights the research, consultation, intervention, and collaborative decision-making activities over a 4-year period in a continuing university–school partnership. The discussion focuses on the process, challenges, and successes in consulting to build multitiered systems of support.     

The pace of vocabulary growth helps predict later vocabulary skill

Children vary widely in the rate at which they acquire words—some start slow and speed up, others start fast and continue at a steady pace. Do early developmental variations of this sort help predict vocabulary skill just prior to kindergarten entry? This longitudinal study starts by examining important predictors (socioeconomic status [SES], parent input, child gesture) of vocabulary growth between 14 and 46 months (n = 62) and then uses growth estimates to predict children’s vocabulary at 54 months. Velocity and acceleration in vocabulary development at 30 months predicted later vocabulary, particularly for children from low‐SES backgrounds. Understanding the pace of early vocabulary growth thus improves our ability to predict school readiness and may help identify children at risk for starting behind.     

A Complex quest: The development and research of underachievement interventions for gifted students

The seeming lack of motivation of many academically gifted students is an area of frustration and concern for many parents, teachers, and psychologists. This article explores two studies in which researchers designed interventions to improve academic achievement. Both interventions were created using the Achievement‐Orientation Model. The first study matched the intervention to the student and found that the students' grades increased over the intervention period, t(45) = 2.56, p = .014, d = .38. Students using treatments linked to goal valuation and environmental perceptions showed the greatest academic grade growth; the self‐efficacy and self‐regulation groups showed little or no grade improvement. Building on the finding that goal valuation was important, the second study used a mixed‐methods design to pilot an intervention focused on goal valuation and student autonomy. The results of this study were mixed, as the intervention appeared to help two of the three students. Although these studies offer further insight into possibilities for promoting academic achievement among gifted students, further research examining how to best support and foster academic achievement in underachieving gifted students is needed. © 2012 Wiley Periodicals, Inc.