Elite football on artificial turf versus natural grass: movement patterns, technical standards, and player impressions     

Andersson H  Ekblom B  Krustrup P 《Journal of sports sciences》2008,26(2):113-122

The aim of the present study was to examine the movement patterns, ball skills, and the impressions of Swedish elite football players during competitive games on artificial turf and natural grass. Time - motion analyses (36 observations) and technical analyses (16 team observations) were performed and 72 male and 21 female players completed a questionnaire. No differences were observed between artificial turf and natural grass in terms of total distance covered (mean 10.19 km, s = 0.19 vs. 10.33 km, s = 0.23), high-intensity running (1.86 km, s = 0.10 vs. 1.87 km, s = 0.14), number of sprints (21, s = 1 vs. 22, s = 2), standing tackles (10, s = 1 vs. 11, s = 1) or headers per game (8, s = 1 vs. 8, s = 1), whereas there were fewer sliding tackles (P < 0.05) on artificial turf than natural grass (2.1, s = 0.5 vs. 4.3, s = 0.6). There were more short passes (218, s = 14 vs. 167, s = 12) and midfield-to-midfield passes (148, s = 11 vs. 107, s = 8) (both P < 0.05) on artificial turf than natural grass. On a scale of 0-10, where 0 = "better than", 5 = "equal to", and 10 = "worse than", the male players reported a negative overall impression (8.3, s = 0.2), poorer ball control (7.3, s = 0.3), and greater physical effort (7.2, s = 0.2) on artificial turf than natural grass. In conclusion, the running activities and technical standard were similar during games on artificial turf and natural grass. However, fewer sliding tackles and more short passes were performed during games on artificial turf. The observed change in playing style could partly explain the male players' negative impression of artificial turf.  相似文献   

数字时代西藏地区图书馆员的继续教育   总被引：3，自引：1，他引：2  

卓嘎 《图书馆论坛》2002,22(2):19-20

数字图书馆的发展对图书馆员的素质提出了更高的要求 ,本文从目前西藏地区图书馆员的现状出发 ,回顾以往图书馆员继续教育的经验教训 ,指出数字时代图书馆员的继续教育应采取的原则和具体措施  相似文献   

共建共享:西藏地区图书馆藏学信息资源发展之路     

卓嘎 《图书馆论坛》2006,26(3):11-13

通过对目前西藏地区图书馆藏学信息资源现状的调查研究,阐述实现藏学信息资源共建共享应遵循的原则,提出藏学信息资源共享的具体措施。  相似文献   

Online Celebrity Bashing: Wrecking Ball or Good for You? Adolescent Girls’ Attitudes Toward the Media and Public Bashing of Miley Cyrus and Selena Gomez     

Gaëlle Ouvrein  Sara Pabian  Juan Manuel Machimbarrena  Charlotte J.S. De Backer  Heidi Vandebosch 《Communication Research Reports》2018,35(3):261-271

Journalists and readers of celebrity news regularly bash celebrities online, a behavior that is easily accepted among adolescents. This study investigates whether these attitudes of acceptance differ according to the perpetrator of the bashing (media versus public) and the likeability of the involved celebrity (liked versus disliked). Using a vignette study, we examine adolescent girls’ attitudes toward media (journalists’) and public (readers’) bashing of a generally disliked celebrity (Miley Cyrus) and a generally liked celebrity (Selena Gomez). All participants read an identical negative news story (media bashing) and two related negative reader comments (public bashing). Participants were randomly assigned to read this information about either Miley Cyrus or Selena Gomez. Results of a mixed-design ANOVA showed that the girls had less negative attitudes toward media bashing compared with public bashing. Moreover, they more easily accepted the bashing of a disliked celebrity than the bashing of a liked celebrity.  相似文献   

In Memoriam     

Helena Miller 《Journal of Jewish Education》2016,82(2)

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Reflecting Trends in Research and in Wider Society     

Helena Miller 《Journal of Jewish Education》2016,82(3):179-181

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Active recovery of the finger flexors enhances intermittent handgrip performance in rock climbers     

Jiří Baláš  David Giles  Jan Kodejška  Michaela Panáčková  Simon Fryer 《European Journal of Sport Science》2016,16(7):764-772

This study aimed to (1) evaluate the effect of hand shaking during recovery phases of intermittent testing on the time–force characteristics of performance and muscle oxygenation, and (2) assess inter-individual variability in the time to achieve the target force during intermittent testing in rock climbers. Twenty-two participants undertook three finger flexor endurance tests at 60% of their maximal voluntary contraction until failure. Performances of a sustained contraction and two intermittent contractions, each with different recovery strategies, were analysed by time–force parameters and near-infrared spectroscopy. Recovery with shaking of the forearm beside the body led to a significantly greater intermittent test time (↑ 22%, P?P?P?相似文献   

Professional development of kindergarten teachers in Croatia – a personal choice or an obligation     

Ivana Visković 《Early Years: An International Journal of Research and Development》2018,38(3):286-297

The quality of educational processes with children of preschool age and long-term educational outcomes are largely related to the work quality of teachers. Lifelong learning and professional development, as predictors of quality, need to be regarded as an ongoing task for kindergarten teachers. Findings of an empirical study of Croatian kindergarten teachers’ views (N = 388) on professional development point to a link between teachers’ intrinsic motivation and their professional development. Motivation explains 46.87% of the variance Personal commitment to professional development. A slight positive correlation was found between the level of formal education and the frequency of professional development (r = .216, p < .01). Although the level of education of kindergarten teachers is not a good independent predictor, it affects readiness to self-fund professional development (p < .01). As for the significance of conferences as a form of professional development, participants of the study identified them as an effective opportunity (M = 4.68, SD = .52), promoting both quality practices (M = 4.69, SD = .54) and exchange of experiences (M = 4.68, SD = .56). The length of participants’ professional work experience affects their assessment of the significance of practitioners’ networking as a way of improving the quality of everyday practices (F = 1.43, p < .05).  相似文献   

Students’ Differential Text Production in the Regulative Context of the Classroom     

Ana M. Morais  Helena Antunes 《British Journal of Sociology of Education》1994,15(2):243-263

The research reported in this article is focused on the regulative context of the classroom and attempts to analyse the differential text production by students with different backgrounds (social class, race) and submitted to three different pedagogic practices. These practices, differing in power and control relations, required from the students specific socio‐ affective dispositions. The study explores the extent to which children possessed the specific coding orientation at the level of a given regulative pedagogic practice and also the underlying reasons. Bernstein's conceptual instruments of pedagogic code and also of recognition and realization rules were used to develop the analysis.  相似文献   

Educational epistemologies and methods in a more-than-human world     

Helena Pedersen  Barbara Pini 《Educational Philosophy and Theory》2017,49(11):1051-1054

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