An investigation of the in-game behaviours of professional,top-level youth soccer coaches     

Matt Smith 《Journal of sports sciences》2013,31(4):355-366

Abstract

Although research into coaching has increased considerably during the last two decades, an area of neglect has been that of the professional youth coach. The aim of this study was to investigate the working behaviours of six top-level professional soccer coaches. Data were collected using a modified version of the Arizona State University Observation Instrument and semi-structured interviews. The triangulation of the data ensured that both the “what” and the “why” of the coaches' behaviour were considered. Results revealed a conscious and well thought out pattern of behaviour: silently monitoring, interspersed with clips of instruction coupled with praise and encouragement. The interviews revealed three themes underpinning this behaviour: developing game understanding, support and encouragement, and coaches' role and influences. The use of silence was the largest single behaviour, the efficacy of which was considered in light of theories of experiential and discovery learning.  相似文献   

Relationships among peak power output,peak bar velocity,and mechanomyographic amplitude during the free-weight bench press exercise     

Matt S. Stock  Travis W. Beck  Jason M. Defreitas  Michael A. Dillon 《Journal of sports sciences》2013,31(12):1309-1317

Abstract

The purpose of this study was to examine the relationships among mechanomyographic (MMG) amplitude, power output, and bar velocity during the free-weight bench press exercise. Twenty-one resistance-trained men [one-repetition maximum (1-RM) bench press = 125.4 ± 18.4 kg] performed bench press muscle actions as explosively as possible from 10% to 90% of the 1-RM while peak power output and peak bar velocity were assessed with a TENDO Weightlifting Analyzer. During each muscle action, surface MMG signals were detected from the right and left pectoralis major and triceps brachii, and the concentric portion of the range of motion was selected for analysis. Results indicated that power output increased from 10% to 50% 1-RM, followed by decreases from 50% to 90% 1-RM, but MMG amplitude for each of the muscles increased from 10 to 80%1-RM. The results of this study indicate that during the free-weight bench press exercise, MMG amplitude was not related to power output, but was inversely related to bar velocity and directly related to the external load being lifted. In future research, coaches and sport scientists may be able to estimate force/torque production from individual muscles during multi-joint, dynamic constant external resistance muscle actions.  相似文献   

Time-motion analysis of elite field hockey, with special reference to repeated-sprint activity     

Spencer M  Lawrence S  Rechichi C  Bishop D  Dawson B  Goodman C 《Journal of sports sciences》2004,22(9):843-850

Limited information exists about the movement patterns of field-hockey players, especially during elite competition. Time-motion analysis was used to document the movement patterns during an international field-hockey game. In addition, the movement patterns of repeated-sprint activity were investigated, as repeated-sprint ability is considered to be an important fitness component of team-sport performance. Fourteen members of the Australian men's field-hockey team (age 26+/-3 years, body mass 76.7+/-5.6 kg, VO2max 57.9+/-3.6 ml.kg(-1).min(-1); mean+/-s) were filmed during an international game and their movement patterns were analysed. The majority of the total player game time was spent in the low-intensity motions of walking, jogging and standing (46.5+/-8.1, 40.5+/-7.0 and 7.4+/-0.9%, respectively). In comparison, the proportions of time spent in striding and sprinting were 4.1+/-1.1 and 1.5+/-0.6%, respectively. Our criteria for 'repeated-sprint' activity (defined as a minimum of three sprints, with mean recovery duration between sprints of less than 21 s) was met on 17 occasions during the game (total for all players), with a mean 4+/-1 sprints per bout. On average, 95% of the recovery during the repeated-sprint bouts was of an active nature. In summary, the results suggest that the motion activities of an elite field-hockey competition are similar to those of elite soccer, rugby and Australian Rules football. In addition, the investigation of repeated-sprint activity during competition has provided additional information about the unique physiological demands of elite field-hockey performance.  相似文献   

Collection development for new librarians: Advice from the trenches     

James Cory Tucker  Matt Torrence   《Library Collections, Acquisitions, and Technical Services》2005,28(4):325

There are many challenges facing new librarians in the academic environment, including collection development. This article analyzes the topic of collection development and how it relates to new professionals in the field of librarianship. The article contains a literature review of papers discussing the collection development curriculum in library and information science programs, expected skills required of collection development offices, and library training programs for new librarians. The article also provides practical advise by recent graduates and their collection development experiences. Topics of discussion include acclimation to a new environment, collection development policies and procedures, liaison work, resource selection, and time management.  相似文献   

Books,bistros, and the evolution of the content provider     

Matt?SutherlandEmail author 《Publishing Research Quarterly》2003,19(1):70-72

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Is logographic processing holistic or analytic?     

Vanessa Genisio  Mireille Bastien-Toniazzo 《European Journal of Psychology of Education - EJPE》2003,18(3):239-249

Two tasks of word identification were proposed to children in their last year of upper preschool classes. The results show that identification is not based on an holistic processing but on an analytic one: some letters are enough, especially the first ones. Moreover, their order does not matter. During this period where reading is visuo-semantic in nature, children process letters as words properties. This kind of processing provides them with an “epilinguistic” knowledge about visual properties of the words, which is one of those precursors of decoding acquisition.  相似文献   

Webquest learning as perceived by higher-education learners     

Robert Zheng  Bradd Stucky  Matt McAlack  Mike Menchana  Sue Stoddart 《TechTrends》2004,49(4):41-49

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Students with Disabilities and eLearning in Australia: Experiences of Accessibility and Disclosure at Curtin University     

Mike Kent  Katie Ellis  Matt Giles 《TechTrends》2018,62(6):654-663

This article reports on a study into students with disabilities and their experiences of eLearning at Curtin University in Australia. The results are compared to an earlier study of students at Open Universities Australia (OUA) (Kent 2016). The results confirm the earlier study’s findings that these students are drawn to eLearning. The prevalence of mental illness and medical disabilities as the two most frequent impairment types amongst students with disabilities in Australia was confirmed, along with a need to rethink universal design for eLearning to better accommodate these students. It also finds that the students had difficulty accessing online platforms and notably those provided directly by the university. This survey confirmed that students at Curtin University were more aware than their OUA counterparts of accommodations that could be made to help with their studies. It also showed that, when used, those accommodations were more successful. However, the study also reported that Curtin University students were more likely to not disclose their disability as part of their studies.  相似文献   

Nature and importance of the logographic phase in learning to read     

Bastien-Toniazzo  Mireille  Jullien  Sandrine 《Reading and writing》2001,14(1-2):119-143

The purpose of this study was to determine the natureand role of knowledge constructed by the child at thevery beginning of his or her contact with printedwords, i.e., during the logographic phase. The resultsof four experiments conducted with 5-year-oldsprovided no supporting evidence for global processingof words. They did suggest, however, that childrenrely on the letters in words, which act as wordidentifiers. A few letters appear to suffice,particularly if they are rare or in word-initialposition. Moreover, letter order is not processed bysome children. The results as a whole indicate thatthe letters in a word serve as its identifying visualproperties as long as, for the child, the solefunction of the written language is to encode meaning.This phase appears to be crucial in learning to read,since it supplies the precursors upon which lateracquisitions are based.  相似文献   

Personality and problem behaviours as predictors of adolescents’ social status: academic track and gender as moderators     

Mireille D. Hubers  William J. Burk  Eliane Segers  Marloes Kleinjan  Ron H.J. Scholte  Antonius H.N. Cillessen 《教育心理学》2016,36(8):1443-1461

This study examined adolescent personality and problem behaviours as predictors of two types of social status: social preference and popularity. Academic track (college preparatory and vocational) and gender were expected to moderate these associations. The sample included 693 students (49.0% female; M = 15.46 years) attending classrooms in two academic tracks (vocational and college preparatory). Participants completed self-report measures of personality and problem behaviours and peer-reports of preference and popularity. Results of structural path analyses indicated that academic track and gender moderated several associations. Specifically, externalising problems were associated with more popularity for males and less preference for females in college preparatory classrooms. Internalising problems were associated with popularity and preference for adolescents in vocational classrooms. The findings illustrate the complexities associated with predicting the social status of male and female adolescents attending different academic tracks. The salience of status norms and implications for intervention programmes are discussed.  相似文献