Compensatory adjustments in lower extremity kinematics in response to a reduced cushioning of the impact interface in heel–toe running

The response of heel-toe runners to changes in cushioning of the impact interface was investigated. Ground reaction force and sagittal plane kinematic data were collected for six heel-toe runners performing barefoot running trials on a conventional asphalt surface and an asphalt surface with additional cushioning. Statistical analysis indicated that similar peak impact force values were maintained when running on the two surfaces (p < 0.1). When running on the less cushioned surface, significant reductions were detected in ankle dorsi-flexion angle immediately prior to ground impact and peak ankle plantar-flexion velocity immediately following impact (p > 0.1). In addition, individual subjects demonstrated reductions in heel velocity and increases in knee flexion immediately prior to ground contact. The observed reduction in ankle dorsiflexion at impact, resulting in a flatter foot at ground contact, supports previous suggestions that this is a strategy to reduce local plantar pressure loads. The additional use of adjustments in heel velocity and initial knee flexion highlights the ability of some subjects to adopt compensatory measures to reduce peak impact loading. However, some subjects appear unable to make these adjustments, resulting in higher impact loading on the less cushioned surface for these subjects. This study provides experimental evidence to support the theoretical potential of heel impact velocity and initial knee flexion to influence impact loading in running.     

Predicting elite Scottish athletes’ attitudes towards doping: examining the contribution of achievement goals and motivational climate

Understanding athletes’ attitudes to doping continues to be of interest for its potential to contribute to an international anti-doping system. However, little is known about the relationship between elite athletes’ attitudes to drug use and potential explanatory factors, including achievement goals and the motivational climate. In addition, despite specific World Anti-Doping Agency Code relating to team sport athletes, little is known about whether sport type (team or individual) is a risk or protective factor in relation to doping. Elite athletes from Scotland (N = 177) completed a survey examining attitudes to performance-enhancing drug (PED) use, achievement goal orientations and perceived motivational climate. Athletes were generally against doping for performance enhancement. Hierarchical regression analysis revealed that task and ego goals and mastery motivational climate were predictors of attitudes to PED use (F (4, 171) = 15.81, P < .01). Compared with individual athletes, team athletes were significantly lower in attitude to PED use and ego orientation scores and significantly higher in perceptions of a mastery motivational climate (Wilks’ lambda = .76, F = 10.89 (5, 170), P < .01). The study provides insight into how individual and situational factors may act as protective and risk factors in doping in sport.     

The Role of Scientist Mentors on Teachers’ Perceptions of the Community of Science During a Summer Research Experience

This study focuses on the mentor relationships between science teachers and their scientist mentors in a summer Research Experience for Teachers program at a United States national laboratory facility. Using mixed methods, the authors surveyed and interviewed (semi-structured) the eleven participating teachers before and after the program. The authors also observed the teachers with their mentors each week. During these observations, three different types of mentoring relationships were observed. The authors highlight these through case studies of three teachers, each of whom experienced one of the three relationships. These case studies include their pre and post survey and interview data as well as classroom observations following the program. The results show that the mentoring relationship positively influences teachers?? views of scientific inquiry. The participating teachers felt a sense of membership in the science community as a result of the mentoring they received from their scientists and/or other members of their research group (i.e. graduate students, post doctorates). The three cases demonstrate that teachers felt a higher sense of ownership when they were ??discovering?? information that was new to their scientist or ??translating?? their work. All three types of mentoring relationships improved teachers?? understanding of scientific inquiry, which can translate into the classroom.     

The impact of an intervention on children's reading and spelling ability in low-income schools in India

The aim of this study using a quasi-experimental design was to investigate whether utilising synthetic phonics in schools catering for low-income families in India would increase reading and spelling attainment in English. Over 500 children in 20 schools took part in the 6-month programme. Just over half of the children experienced lessons organised around the synthetic phonics materials, whilst the other children continued with their normal English lessons. The findings show that there were statistically significant differences between the intervention and control groups in the improvements of the children in their test scores in reading and spelling.