教练员在运动队中的角色

有专家认为,教练员的指导不应被简单地定义为一些教学方法或他们所传授某种专门体育知识,而应被看作一种更为复杂的活动。“它本质上是一种社会实践活动,是教练员、运动员及俱乐部环境之间的互动产生的活动”,因此,教练员的指导是一种“复杂的社会关系”,是发生在“教学背景”下的一种关系。所谓的教学背景就是一个整体,即这个背景中的所有参与者及个人行为都是一个整体过程。正是每一部分之间的互相依赖才使“教学背景”成为一个单独的实体。     

1970-2001年间发表的训练科学英文文献的分析

尽管关于运动训练方面的科技文献越来越多,但是很少有人对这方面的文献进行总结,即使有也只是在有限的时间范围内或主要针对运动训练行为方面的.由于该方面的资料缺乏系统性和连贯性,所以,笔者在进行此项研究的过程中也受到诸多限制.     

An examination of slo-pitch pitching trajectories

Many slo-pitch coaches and players believe that generating spin on a ball can affect its trajectory. The influence of air resistance on a ball that is thrown at a moderate speed and spin is unclear. The aim of this study was to examine the influence of spin on the ball's trajectory in slo-pitch pitching using both experimental results and ball flight simulations. Fourteen pitchers participated in the study, each of whom threw five backspin and topspin pitches each. Data were collected using standard three-dimensional videography. The horizontal velocity, vertical velocity, angular velocity, release height, and horizontal displacement of the backspin pitches were significantly higher than those of the topspin pitches. The ball flight simulations were developed to examine the influence of the ball spin, and it was concluded that the spin of the ball had a significant effect on the ball's vertical and horizontal displacements. Furthermore, our results suggest that a backspin pitch that reaches the maximum height allowable and lands in the front edge of the strike zone has the steepest slope. The present results add to our understanding of projectile motion and aerodynamics.     

Reciprocal peer tutoring in a physical education setting: influence of peer tutor training and gender on motor performance and self-efficacy outcomes

Students often do not take full advantage of peer tutoring instructional strategies because they are not sufficiently prepared to fulfill the role of tutor. This study examined whether implementing a peer tutor training program prior to the beginning of reciprocal peer tutoring (RPT) sessions might help overcome this issue. Gender differences were also explored. In a physical education setting, 48 novice ninth-graders were assigned in symmetric dyads to a physical practice associated with trained RPT condition (TRPT; n = 24) or a physical practice associated with spontaneous RPT condition (SRPT; n = 24). Moreover, 24 participants were assigned to a physical practice without any form of RPT control condition (PP). The peer tutor training, based on an original group interview technique, aimed at enhancing the explanatory potential of the tutor and his/her sensitivity to the specific needs of the tutee. Results indicated a superior motor performance for the TRPT condition and no difference between the SRPT and PP conditions. Interestingly, a positive relation between motor performance and self-efficacy beliefs was found for TRPT females. The assumption that the development of metacognitive awareness is one of the mechanisms underlying RPT’s effectiveness was thus supported.     

Effects of Junior Kindergarten on Emerging Literacy in Children from Low-Income and Linguistic-Minority Families

We study the benefits of junior kindergarten for linguistic-minority 4-year-olds compared to their linguistic-majority classmates from the same low-income neighborhoods. At the end of the school year, linguistic-minority children made significantly greater improvements in language skills than their host society classmates. At the mid-year point, junior kindergarten teachers made efforts to help linguistic-minority children overcome the challenges of the school environment of their new host society by adapting their pedagogical strategies to those showing difficulty in their receptive vocabulary skills. They also offered greater means of contact to parents of linguistic-minority children having difficulty attaining language proficiency than to parents of children showing better improvements. Parents of linguistic-minority students showing smaller gains were more likely to use a larger proportion of the communication methods offered by teachers and participate in the parent–school relationship for the well-being of their children. Long-term results suggest that linguistic-minority children continued to make significant improvements.

Protective effect of endolithic fungal hyphae on oolitic limestone buildings

This study presents characterizations of weathering forms of the same oolitic limestone from four quarries and eight monuments exposed on various environmental conditions focusing on the waterproofing effect of endolithic organic matter. Patinas were analyzed by X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectrometry (SEM-EDX), capillarity coefficient through weathered and unweathered sides, gypsum content and porous network morphology by epoxy resin molding. Study of weathering forms on old quarries indicates that lichens colonization (Verrucaria nigrescens and Caloplaca aurantia) can fill the superficial porous network with a dense network of lichenised fungal hyphae. Capillary coefficient measurement on natural and calcinated samples showed that endolithic organic matter can waterproof the stone and could act as a sulfate contamination barrier. Similar endolithic organic layer due to ancient lichens growth are found on some antique monuments of the Nîmes downtown and could explain their well-preserved state, unlike decayed 19th century churches that were never colonized by lichens.     

ENTRE REPRODUCTION ET MOBILISATION: LES RAPPORTS DE GENRE EN FORMATION CONTINUE EN FRANCE ET AU CANADA

La situation des femmes en éducation initiale a beaucoup évolué depuis 40 ans. Mais qu’en est-il de leur situation en éducation et formation des adultes? Cet article, comparant le Canada et la France, montre que si les femmes ont un taux de participation plus élevé que les hommes, ce qui est un fait connu, leur présence plus forte en formation à vocation professionnelle constitue, toutefois, un phénomène nouveau. L’analyse met en relief certaines particularités, telles qu’un recours plus important à la formation continue au Canada, ou encore une probabilité plus élevée, en France, de la participation des employés à temps complet. Dans les deux pays, la participation des femmes demeure modulée par divers facteurs sociaux.     

Public subsidies to private schools do make a difference for achievement in mathematics: Longitudinal evidence from Canada

Selection into private schools is the principal cause of bias when estimating the effect of private schooling on academic achievement. By exploiting the generous public subsidizing of private high schools in the province of Québec, the second most populous province in Canada, we identify the causal impact of attendance in a private high school on achievement in mathematics. Because the supply of highly subsidized spaces is much higher at the high school level than at the grade school level, 94% of transitions from the public to the private sector occur at the end of primary school, we assume that these transitions are exogenous with respect to changes in transitory unobserved variables affecting math scores conditional on variables such as changes in income and child fixed effects. Using 7 cycles of data from Statistics Canada's National Longitudinal Survey on Children and Youth (NLSCY), we estimate the effect of attending a private high school on the percentile rank and a standardized math test score with different models (child fixed effects, random effects and a pooled OLS) and restricted samples to control for the degree of selection. The results, interpreted as a treatment on the treated effect show that the effect of changing schools, from a public grade school to a private high school, increases the percentile rank of the math score between 4 and 10 points and by between 0.12 and 0.36 of a standard deviation depending on the specification and samples.     

A novel phased‐concept course for the delivery of anatomy and orthopedics training in medical education

Integration of anatomy and clinical teaching is a theoretical ideal, yet there is a worldwide paucity of such amalgamation. These teaching models provide support for medical trainees, an important element in Germany where orthopedic intern numbers have declined and anecdotal evidence suggests disinterest in orthopedics. The aim of the study was to develop an integrated anatomy‐surgical course for undergraduate medical training, assess the model developed, and explore how medical students perceive orthopedics as a career. The course was to deliver medical anatomy and clinical orthopedic training, focusing on interdisciplinary teaching and learning, vertical integration of clinical knowledge and skills, and professional interaction. Survey evaluation of the course and students' perceptions of orthopedic careers was performed, including Likert‐type responses rating variables of interest. A phased‐concept program of five courses, each optional and under one‐week in duration, was developed parallel to the undergraduate medical program. Delivered by anatomists and surgeons, courses included biomechanics, advanced dissection, surgical approaches, casts and implants, and sports medicine. Course data indicate positive support for course format, stimulation of interest, and high clinical relevance. Students are generally interested in surgery, and identify hierarchy, lawsuits, bureaucracy and physical stress as barriers to orthopedic careers. This novel phased‐concept successfully delivers combined anatomy and surgery training in a vertically‐integrated format while addressing students' clinical and professional skills. The format facilitates an appreciation of potential career options in orthopedics, while fostering professional skills during medical training. Barriers to careers in orthopedics can now be addressed in future courses. Anat Sci Educ 10: 372–382. © 2016 American Association of Anatomists.