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181.
Capoeira, the Brazilian dance and martial art is now globalised and taught widely outside Brazil. Instruction is provided by Brazilians who are living in self-imposed exile from their homeland. The authentic capoeira that such teachers provide is a major attraction for non-Brazilian students. However, there is little research available on the motivations and strategies of overseas capoeira instructors. Building on a long term ethnographic study, this paper showcases the goals and strategies of one successful Brazilian teacher, from the Beribazu Group of Capoeira, working in the UK. This teacher reflects upon his four interlocking aims for his students and the strategies for achieving them. They should develop social cohesion, appreciate Brazilian culture, play good capoeira and learn to move their bodies acrobatically, flexibly and beautifully. Two sociologists embed the teacher's perspective on his work in an analytic framework derived from Bourdieu. 相似文献
182.
Amanda P. Silvatti Karine J. Sarro Pietro Cerveri Guido Baroni Ricardo M. L. Barros 《Journal of sports sciences》2013,31(14):1551-1560
Abstract The purpose of this paper was to understand which differences long-term swimming training can cause on trunk mechanics during breathing and how these differences are related to the years of swimming training. The variations and coordination among trunk compartments were considered as target movement patterns. Video-based plethysmography was utilised for data acquisition and pre-processing. A group of swimmers, who followed a long-term intensive swimming training previously to this study, was compared with a non-swimmer control group. The participants of both groups performed quiet breathing and vital capacity tests. From the compartmental volumes associated with each breathing curves, the relative amplitude and cross-correlation among these volumetric time-varying signals were calculated, in order to analyse the relative partial volume variation and the coordination among trunk compartments involved in respiration. The results of a Mixed-ANOVA test (P ≤ 0.05) revealed higher coefficient of variation (P < 0.001) and correlations among trunk compartments in the swimmers group when vital capacity was performed. Significant linear regression was found between the years of swim training and the coefficients of variation and correlation. The results suggest that after long periods of intensive swim training, athletes might develop specific breathing patterns featuring higher volume variations in the abdominal region and more coordination among compartments involved in forced respiratory tasks such as vital capacity. 相似文献
183.
Jesús G. Pallarés Luis Sánchez-Medina Carlos Esteban Pérez Ernesto De La Cruz-Sánchez Ricardo Mora-Rodriguez 《Journal of sports sciences》2013,31(12):1165-1175
AbstractThis study analysed the effect of imposing a pause between the eccentric and concentric phases on the biological within-subject variation of velocity- and power–load isoinertial assessments. Seventeen resistance-trained athletes undertook a progressive loading test in the bench press (BP) and squat (SQ) exercises. Two trials at each load up to the one-repetition maximum (1RM) were performed using 2 techniques executed in random order: with (stop) and without (standard) a 2-s pause between the eccentric and concentric phases of each repetition. The stop technique resulted in a significantly lower coefficient of variation for the whole load–velocity relationship compared to the standard one, in both BP (2.9% vs. 4.1%; P = 0.02) and SQ (2.9% vs. 3.9%; P = 0.01). Test–retest intraclass correlation coefficients (ICCs) were r = 0.61–0.98 for the standard and r = 0.76–0.98 for the stop technique. Bland–Altman analysis showed that the error associated with the standard technique was 37.9% (BP) and 57.5% higher (SQ) than that associated with the stop technique. The biological within-subject variation is significantly reduced when a pause is imposed between the eccentric and concentric phases. Other relevant variables associated to the load–velocity and load–power relationships such as the contribution of the propulsive phase and the load that maximises power output remained basically unchanged. 相似文献
184.
Abstract This study investigated effects of manipulating the number of action possibilities in a futsal passing task to understand the representativeness of practice tasks designs. Eight male senior futsal players performed a passing task in which uncertainty on passing direction for the player in possession of the ball was increased in four conditions and compared with passing data from a competitive match. Performance during a passing task and competitive futsal performance was compared using ball speed and passing accuracy data. Ball speed data were analysed by approximate entropy (ApEn) to capture their regularity in each of the four conditions and during competitive performance. Significantly high levels of regularity were observed in predetermined passes in comparison with emergent passes (i.e., passes with high number of possibilities for action). Similar results for ball speed regularity were observed between practice tasks with a high number of possibilities for action (i.e., emergent passes) and competitive performance. Similar results were observed for passing accuracy in practice tasks with a high number of possibilities for action compared to competitive performance. Increases in the number of action possibilities during practice improved action fidelity of tasks in relation to competitive performance. 相似文献
185.
Affective Reorganization in the Infant, the Mother, and the Dyad: The Role of Upright Locomotion and Its Timing 总被引:2,自引:0,他引:2
Zeynep Biringen Robert N. Emde Joseph J. Campos Mark I. Appelbaum 《Child development》1995,66(2):499-514
Clinical theory is replete with rich observations that the onset of walking engenders an enhancement of emotional expression in the infant. Yet, no empirical research exists on this subject. Moreover, the importance of normal timing variations in the onset of developmental transitions has not been a topic of investigation in most developmental research. In this naturalistic home study, "earlier" and "later" walking groups were delineated on the basis of timing of entry into this developmental transition. Age-held constant analyses indicated that earlier walkers and their mothers generally showed a rise in positive exchanges as well as "testing of wills" across the transition to walking. These changes were less clear for the later walkers. Differences were observed also between the two groups even prior to walking. These findings suggest that future studies should take account of timing variations in the onset of a developmental transition. 相似文献
186.
The article seeks to elucidate and academically position the genre of critical arts‐based research in education. The article fuses Critical Race Theory (CRT), life history and performance, alongside work with undocumented American students of Mexican origin, to show how a politicised qualitative paradigmatic re envisioning can occur in which counter‐histories and counter‐stories can be co‐created into a powerful, evocative, and transformative arts‐based performance text: Undocumented Historias. The article reflects on how critical arts‐based research in education can function as a means to legitimise, empower and promote the voices of the educationally and socially marginalised; evoking an experiential and sensual means of feeling and knowing by which researcher and researched may co‐recover, interrogate and enrich an anti‐colonialist critique of the dominant social order. 相似文献
187.
Marcos Gutierrez-Davila Manuel Ortega Jose Campos Juan Parraga 《Journal of sports sciences》2013,31(12):1321-1328
Abstract This study seeks to discover whether handball goalkeepers employ a general anticipatory strategy when facing long distance throws and the effect of uncertainty on these strategies. Seven goalkeepers and four throwers took part. We used a force platform to analyse the goalkeeper's movements on the basis of reaction forces and two video cameras synchronised at 500 Hz to film the throw using 3D video techniques. The goalkeepers initiated their movement towards the side of the throw 193 ± 67 ms before the release of the ball and when the uncertainty was reduced the time increased to 349 ± 71 ms. The kinematics analysis of their centre of mass indicated that there was an anticipatory strategy of movement with certain modifications when there was greater uncertainty. All the average scores referring to velocity and lateral movement of the goalkeeper's centre of mass are significantly greater than those recorded for the experimental situation with bigger uncertainty. The methodology used has enabled us to tackle the study of anticipation from an analysis of the movement used by goalkeepers to save the ball. 相似文献
188.
Many studies have demonstrated the facilitating role of rhetorical devices in text comprehension, but there are also studies where rhetorical devices have not shown such effect. The present study sets out to explore whether readers’ knowledge of rhetorical devices (that is, rhetorical competence) moderates their effectiveness beyond general comprehension skills and, consequently, whether rhetorical competence may be considered a component skill of reading comprehension. 192 sixth- to seventh-grade students were assessed on rhetorical competence and were required to read a difficult marked text with specific rhetorical devices (a refutation, an objective, and four organizational signals) or the same text without them. After reading, students produced a summary in order to obtain three dependent variables: main ideas (as a measure of participants’ ability to select relevant information from the text), causal links between them (as an indicator of participants’ ability to grasp the logical structure of the text and to organize its ideas), and the combination of main ideas plus causal links (as an indicator of participants’ global comprehension of the text). Analyses controlling for general comprehension skills and other important variables (working memory, prior knowledge, decoding) demonstrated that: (a) readers of the marked text scored higher in terms of all dependent variables, and (b) rhetorical competence level moderated the effect of rhetorical devices on the composite measure (main ideas plus causal links) and on the organization of the summary by means of causal links. 相似文献
189.
The concept of “collective” or “social” memory has assumed increasing prominence in the discourse of archivists over the past few decades. Archives are frequently characterized as crucial institutions of social memory, and many professional activities are considered forms of memory preservation. We present a systematic examination of the relationships between archives and collective memory as articulated in the English-language archival literature. We first identify the major themes regarding collective memory and categorize archival writings into four major threads. We then analyze citations extracted from 165 articles about collective memory published between 1980 and 2010 in four leading English-language archival studies journals. We identify the most influential scholars and publications and trace the evolution of the collective memory concept in that literature. By comparing the archival literature on collective memory to that indexed in Thomson’s Web of Science and in Google Scholar, we identify specific disciplines, authors, and works that archivists working on collective memory may find useful. We find that in general the archival literature on collective memory is fairly insular and self-referential and call on archivists to actively engage other disciplines when carrying out collective memory research. 相似文献
190.
Diana E. Marsh Ricardo L. Punzalan Robert Leopold Brian Butler Massimo Petrozzi 《Archival Science》2016,16(4):327-372
Cultural heritage institutions leverage digitization to fulfill their mission to preserve, represent, and provide access to collections under their care. Despite their common interest in documenting the progress of digitization and online access, the library, archives, and museums (LAM) sector lacks a conceptual framework for assessing and demonstrating the impact of digitized ethnographic collections. Reporting the findings of a yearlong interdisciplinary study, this article underscores the importance of storytelling in articulating the value and impact of digitized ethnographic collections held in cultural heritage institutions. We begin with an overview of the literature on the assessment and describe the methods we employed in our study. Next, we identify and discuss the different ways that stories and storytelling are strategically mobilized in conversations about the impact of digitization. We conclude with a discussion of the implications of our findings for cultural heritage practice and collection development. 相似文献