Effects of competition level on the centre forward role of men's water polo     

Corrado Lupo  Carlo Minganti  Cristina Cortis  Fabrizio Perroni  Laura Capranica  Antonio Tessitore 《Journal of sports sciences》2013,31(9):889-897

Abstract

This study aimed to compare specific technical and tactical indicators of the team and centre forward role of Euro League, and Italian Serie A1, Serie A2, and Serie B men's water polo club competitions. A notational analysis was performed on 21 water polo matches to evaluate the occurrence of technical and tactical team and centre forward indicators, highlighting differences among championships according to chi-square analyses. Differences emerged for Counterattack (P < 0.001) and Power-Play (P < 0.001) possessions, Even (P < 0.001; Euro League: 3 ± 1, Serie A1: 3 ± 2, Serie A2: 3 ± 2, Serie B: 6 ± 4) and Power-Play (P = 0.001) goals, and exclusions and penalties (P = 0.008) of the team during Even possessions. Relatively to the role analyses, effects emerged for perimeter players playing events (P = 0.049), as well as for centre forwards' goals (P = 0.007) and exclusions and penalties (P < 0.001; Euro League: 8 ± 1, Serie A1: 6 ± 2, Serie A2: 6 ± 2, Serie B: 3 ± 2) occurring at the end of Even possessions. Therefore, in Euro League, and Italian Serie A1 and Serie A2, teams perform a high occurrence of Power-Play possessions following up an exclusion, especially achieved by the centre forward during Even possessions, while, in Italian Serie B, goals were mostly scored during Even possessions, with a relevant contribution from the centre forward role.  相似文献   

Prevalence of a characteristic gene profile in high-level rhythmic gymnasts     

Cristina Tringali  Ilaria Brivio  Beatrice Stucchi  Ilaria Silvestri  Raffaele Scurati  Giovanni Michielon 《Journal of sports sciences》2013,31(14):1409-1415

Abstract

High-level physical performance in rhythmic gymnastics is influenced by numerous skills and anthropometric factors. In order to understand if genetic predisposition could play a role to define the elite rhythmic gymnast phenotype, we analysed the frequency of common polymorphisms linked to genes correlated with body mass (ADRB2 and FTO), explosive strength (ACTN3 and ACE), and joint mobility (COL5A1), in 42 gymnasts involved in National and International events, and in 42 control girls. Our results demonstrated that high-level rhythmic gymnasts constituted a genetically selected population showing higher frequency of: (a) ADRB2 and FTO alleles linked to low body mass index and low fat mass; (b) COL5A1 CT genotype linked to high joint mobility and to the occurrence of genu recurvatum, but also to a higher incidence of injuries. ACTN3 and ACE polymorphisms did not appear to be connected with the phenotype of high-level rhythmic gymnast. Based on these data, it can be assumed that these polymorphisms could positively affect the phenotype and performance of gymnasts.  相似文献   

Clinical Trial Registration in Physiotherapy Journals: Recommendations from the International Society of Physiotherapy Journal Editors     

O P Costa Leonardo  Christine Chung-Wei Lin  Debora Grossi Bevilaqua  Marisa Cota Mancini  Anne K Swisher  Chad Cook  Dan Vaughn  Mark R Elkins  Umer Sheikh  Ann Moore  Gwendolen Jull  Rebecca L Craik  Christopher G Maher  Rinaldo Roberto de Jesus Guirro  Amélia Pasqual Marques  Michele Harms  Dina Brooks  Guy G Simoneau  John Henry Strupstad 《Cardiopulmonary Physical Therapy Journal》2013,24(1):4-6

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Measuring systemic problems in National Innovation Systems. An application to Thailand     

Cristina Chaminade  Patarapong Intarakumnerd 《Research Policy》2012,41(8):1476-1488

The paper contributes to research on innovation systems in general and, in particular, to the current debate on rationales for innovation policy by providing a framework to identify systemic problems in a given system of innovation and test the framework empirically. The data were drawn from the Thai Community Innovation Survey in the period after which a major change in the country's innovation system policy had been initiated. By hierarchical factor analysis, systemic problems are identified and grouped into four components: institution, network, Science and Technology infrastructure and other support services. The analysis allows researchers to investigate the mismatch between policies and problems and identify policy gaps.  相似文献   

Isokinetic hamstrings-to-quadriceps peak torque ratio: the influence of sport modality, gender, and angular velocity     

Andrade Mdos S  De Lira CA  Koffes Fde C  Mascarin NC  Benedito-Silva AA  Da Silva AC 《Journal of sports sciences》2012,30(6):547-553

The purpose of this study was to determine differences in hamstrings-to-quadriceps (H/Q) peak torque ratios evaluated at different angular velocities between men and women who participate in judo, handball or soccer. A total of 166 athletes, including 58 judokas (26 females and 32 males), 39 handball players (22 females and 17 males), and 69 soccer players (17 females and 52 males), were evaluated using an isokinetic dynamometer. The H/Q isokinetic peak torque ratios were calculated at angular velocities of 1.05 rad · s?1 and 5.23 rad · s?1. In the analysis by gender, female soccer players produced lower H/Q peak torque ratios at 1.05 rad · s?1 than males involved in the same sport. However, when H/Q peak torque ratio was assessed at 5.23 rad · s?1, there were no significant differences between the sexes. In the analysis by sport, there were no differences among females at 1.05 rad · s?1. In contrast, male soccer players had significantly higher H/Q peak torque ratios than judokas (66 ± 12% vs. 57 ± 14%, respectively). Female handball players produced significantly lower peak torque ratios at 5.23 rad · s?1 than judokas or soccer players, whereas males presented no ratio differences among sports At 5.23 rad · s?1. In the analysis by velocity, women's muscular ratios assessed at 1.05 rad · s?1 were significantly lower than at 5.23 rad · s?1 for all sports; among men, only judokas presented lower ratios at 1.05 rad · s?1 than at 5.23 rad · s?1. The present results suggest that sport modality and angular velocity influence the isokinetic strength profiles of men and women.  相似文献   

Mapping the impact of climate change on biomass accumulation on stone     

Antonio Gómez-Bolea  Esteve Llop  Xavier Ariño  Cesareo Saiz-Jimenez  Alessandra Bonazza  Palmira Messina  Cristina Sabbioni 《Journal of Cultural Heritage》2012,13(3):254-258

Several climate parameters affect the growth of organisms and, hence, their capacity to accumulate biomass. In the present research, we analyse the influence of two parameters, temperature and precipitation, on biomass accumulation on stone substrate, and propose a function to estimate it in temperate areas. The expression is subsequently used for the first time to evaluate the impact that climate change would have in biomass accumulation in Europe. The models on climate change predict an increase in temperature and precipitation in northern areas of Europe for the far future (2070–2099), which would lead to a higher accumulation of biomass. Otherwise, a significant reduction in precipitation is expected in southern areas of Europe, associated with a lower biomass accumulation in such areas.  相似文献   

Attitudes to diversity: a cross‐cultural study of education students in Spain,England and the United States     

M. Cristina Cardona Moltó  Martyn Rouse  Laura M. Stough 《欧洲师范教育杂志》2010,33(3):245-264

This study explores the beliefs and attitudes that university students enrolled in teacher education programmes in Spain, England and the US (Texas) hold about individuals who differ. A beliefs and attitudes toward difference scale (BATD) was constructed using nine dimensions of diversity; culture, language, socioeconomic status/social class, religion, gender, sexual orientation, political ideology, disability and special talent. A two‐way factorial analysis of variance indicated significant main effects due to the respondent groups on culture, religion and sexual orientation; significant main effects of worldview of difference on political ideology; and no interaction between the two factors on each of the nine domains of difference. An exploratory factor analysis was also performed in order to explore the viability of the theoretical model. The data suggest that attitudes towards people who differ include etic, emic and individual properties. These are discussed in terms of the uses of cross‐cultural data and further research opportunities.  相似文献   

The decentralisation of the school system in post‐communist Romania     

Ana‐Cristina Popescu 《Journal of educational administration and history》2010,42(3):315-336

Following the fall of the Iron Curtain in December 1989, the Romanian system of education has started a deep process of reconstruction that asked for a comprehensive package of reforms among which decentralisation. Broadly the paper aims to make a contribution to the emerging knowledge base about the realities of restructuring of post‐communist education systems and the impact that governance through markets is having on public services. The paper focuses on presenting and discussing the attempts to decentralise pre‐higher education in Romania in considering the role of the state and governance in the provision of public services and the introduction of market mechanisms in education. The decentralisation of education has been proposed by the then Minister of Education Andrei Marga. Although decentralisation in pre‐higher education has been piloted for three academic years and the policy documents that introduced it have been permanently amended and updated, more than a decade later, this reform has not reached its aims mainly due to the various changes on the political scene. However, provided that no major amendments will be made to the Laws of National Education (2009), decentralisation in pre‐higher education will be a reality from 2010–11.  相似文献   

Research collaboration and productivity: is there correlation?     

Giovanni Abramo  Ciriaco Andrea D’Angelo  Flavia Di Costa 《Higher Education》2009,57(2):155-171

The incidence of extramural collaboration in academic research activities is increasing as a result of various factors. These factors include policy measures aimed at fostering partnership and networking among the various components of the research system, policies which are in turn justified by the idea that knowledge sharing could increase the effectiveness of the system. Over the last two decades, the scientific community has also stepped up activities to assess the actual impact of collaboration intensity on the performance of research systems. This study draws on a number of empirical analyses, with the intention of measuring the effects of extramural collaboration on research performance and, indirectly, verifying the legitimacy of policies that support this type of collaboration. The analysis focuses on the Italian academic research system. The aim of the work is to assess the level of correlation, at institutional level, between scientific productivity and collaboration intensity as a whole, both internationally and with private organizations. This will be carried out using a bibliometric type of approach, which equates collaboration with the co-authorship of scientific publications.

Giovanni AbramoEmail:

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The relationship between drawing and oral language in deaf students aged three to five     

Núria Silvestre  Cristina Cambra 《European Journal of Psychology of Education - EJPE》2009,24(1):3-15

This study examines the relationship between drawing and oral language acquisition in deaf students aged three to five. The sample is made up of one hundred participants: fifty deaf and fifty hearing children. Goodenough's Human Figure Drawing Test and the WPPSI Scale of Intelligence geometric design subtest have been used to evaluate graphic representation. The deaf participants' oral language has been assessed using the GAEL-P test. The main findings were that there were no significant differences between the populations studied in terms of graphic representation. The oral language level of the deaf population does not correlate with the level of their geometric designs, but does with the complexity of the drawing of the human figure at the age of 5. The main conclusion with respect to the relationship between oral language and figurative drawings suggests that different representations of symbolic functions should be integrated into children's education, especially in the case of deaf children.  相似文献