Sources of identity and community among highly identified football fans in Germany. An empirical categorisation of differentiation processes1     

Martin Winands  Andreas Grau  Andreas Zick 《Soccer & Society》2019,20(2):216-231

‘Differentiation’ is identified as a key category, and an empirical system of differentiation is developed. The key category is divided into two subcategories, which are further dimensionalized. The analysis finds that highly identified fans differentiate themselves from other fans (both from their own club and from rival clubs) and strive for positive distinction. Violent acts as extreme forms of differentiation are identity-establishing for some of these fans. Confrontations with rival fans are actively sought to extend team competitions concerning the best support into a physical and violent plane and to enforce territorial claims.  相似文献   

Predictive models reduce talent development costs in female gymnastics     

Johan Pion  Andreas Hohmann  Tianbiao Liu  Matthieu Lenoir  Veerle Segers 《Journal of sports sciences》2017,35(8):806-811

This retrospective study focuses on the comparison of different predictive models based on the results of a talent identification test battery for female gymnasts. We studied to what extent these models have the potential to optimise selection procedures, and at the same time reduce talent development costs in female artistic gymnastics. The dropout rate of 243 female elite gymnasts was investigated, 5 years past talent selection, using linear (discriminant analysis) and non-linear predictive models (Kohonen feature maps and multilayer perceptron). The coaches classified 51.9% of the participants correct. Discriminant analysis improved the correct classification to 71.6% while the non-linear technique of Kohonen feature maps reached 73.7% correctness. Application of the multilayer perceptron even classified 79.8% of the gymnasts correctly. The combination of different predictive models for talent selection can avoid deselection of high-potential female gymnasts. The selection procedure based upon the different statistical analyses results in decrease of 33.3% of cost because the pool of selected athletes can be reduced to 92 instead of 138 gymnasts (as selected by the coaches). Reduction of the costs allows the limited resources to be fully invested in the high-potential athletes.  相似文献   

Comparison of inter-trial recovery times for the determination of critical power and W’ in cycling     

Bettina Karsten  James Hopker  Simon A. Jobson  Jonathan Baker  Luca Petrigna  Andreas Klose 《Journal of sports sciences》2017,35(14):1420-1425

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Sex differences in injury rates in team-sport athletes: A systematic review and meta-regression analysis     

Astrid Zech  Karsten Hollander  Astrid Junge  Simon Steib  Andreas Groll  Jonas Heiner  Florian Nowak  Daniel P.feiffer  Anna Lina Rahlf 《运动与健康科学(英文)》2022,11(1):104-114

Background:Team-sport players have a particularly high injury risk.Although female sex is considered a risk factor,it is still unknown whether female and male team-sport players,in fact,differ in their injury rates.We aimed to compare injury rates between female and male players by systematically reviewing and meta-analyzing injury surveillance studies of both sexes in order to evaluate sex-specific differences in team-sport injuries.Methods:Studies that prospectively collected injury data for high-level female and male players(age≥16 years)in basketball,field hockey,football(soccer),handball,rugby(union and sevens),and volleyball were included.Two reviewers(AZ and ALR)independently assessed study quality and extracted data for overall,match,training,and severe injuries(>28 days’time loss)as well as data regarding injury locations and types.Incidence rate ratios(IRRs)were pooled in a meta-analysis,and meta-regression analysis was performed when 10 or more studies were available.Results:Of 20 studies,9 studies reported injury data from football,3 studies from rugby,3 studies from handball,1 study from basketball,1 study from field hockey,2 studies from volleyball,and 1 study from basketball and field hockey.For overall injuries,the pooled IRR=0.86(95%confidence interval(95%CI):0.76-0.98)indicated significantly more injuries in male than in female players.For injury location,the pooled IRR showed higher injury rates in male athletes than in female athletes for upper extremity,hip/groin,thigh,ande foot injuries.Female players had a significantly higher rate of anterior cruciate ligament injuries(IRR=2.15,95%CI:1.27-3.62)than male players.No significant sex-specific differences in IRR were found for match,training,severe injuries,concussions,or ankle sprains.Conclusion:Our meta-analysis provides evidence for sex-specific differences in the injury rates in team sports.Further epidemiological studies including both sexes in sports other than football are needed in order to strengthen the evidence.  相似文献   

Initial psychometric testing of the coach-adapted version of the empowering and disempowering motivational climate questionnaire: A Bayesian approach     

Bård Erlend Solstad  Andreas Stenling  Yngvar Ommundsen  Bente Wold  Jean-Philippe Heuzé  Philippe Sarrazin 《Journal of sports sciences》2020,38(6):626-643

ABSTRACT

The present study examined the psychometric properties of the coach-adapted version of the Empowering and Disempowering Motivational Climate Questionnaire (EDMCQ) using Bayesian structural equation modelling (BSEM). The sample included 780 (M_age = 36.4; SD = 10.8; males n = 698; females n = 54; 28 participants did not report sex) youth sport coaches representing five European countries (i.e., England, France, Greece, Norway, and Spain). The results did not support a 34-item five-factor, hierarchical, a two-factor BSEM, or a bifactor BSEM model across the participating countries. However, the results supported a reduced 19-item first-order, two-factor BSEM model that largely showed approximate metric invariance, but not approximate scalar invariance across the five countries. The pool of items constituting empowering and disempowering motivational climates should be refined to further enhance the empirical operationalisation of the coach-adapted version of the EDMCQ. Advancing the quality of translation-back-translation procedures across cultures and conducting multi-national pilot testing seems warranted as well. These recommendations may help to identify the distinctive aspects of each underlying sub-dimension of the EDMCQ, where coaches are the respondents, and pave the way for further examination of the proposed hierarchical multidimensional factor structure and the cross-cultural equivalence of the EDMCQ for this population.  相似文献   

Concrete Geometry: Playing with Blocks     

Andreas Luescher 《The International Journal of Art & Design Education》2010,29(1):17-26

This article describes a design/build exercise conducted in an Architectural Materials and Methods class to achieve three interrelated objectives: (1) to apply physically the semester's theoretical focus on the constituent process and languages of architecture investigations, (2) to capitalise on the physical and aesthetic properties of concrete masonry to explore fabrication and detailing in the design process, and (3) to examine preconceptions about solo work and team work in architectural education and practice. What makes this project unique among other design/build projects is its emphasis on Concrete Masonry Units (known as CMU in the USA) and their visual, tactile and functional properties. The junior and senior students were allowed three building elements: an 8′ cube of space, an unlimited number of concrete blocks, and the visual ecology of a site. The structural vocabulary that Frank Lloyd Wright developed consisted of a three‐dimensional field of lines through which the solid elements of the building were located, enabling the voids to be integral to the whole and equally meaningful. Using these elements, students were asked to design/build temporary structures in a field next to the airport hangar on campus. The pedagogical objective was to adopt Wright's creative spirit, as opposed to quoting his architectural language.  相似文献   

Development and validation of a low cost blood filtration element separating plasma from undiluted whole blood     

Homsy A  van der Wal PD  Doll W  Schaller R  Korsatko S  Ratzer M  Ellmerer M  Pieber TR  Nicol A  de Rooij NF 《Biomicrofluidics》2012,6(1):12804-128049

Clinical point of care testing often needs plasma instead of whole blood. As centrifugation is labor intensive and not always accessible, filtration is a more appropriate separation technique. The complexity of whole blood is such that there is still no commercially available filtration system capable of separating small sample volumes (10-100 μl) at the point of care. The microfluidics research in blood filtration is very active but to date nobody has validated a low cost device that simultaneously filtrates small samples of whole blood and reproducibly recovers clinically relevant biomarkers, and all this in a limited amount of time with undiluted raw samples. In this paper, we show first that plasma filtration from undiluted whole blood is feasible and reproducible in a low-cost microfluidic device. This novel microfluidic blood filtration element (BFE) extracts 12 μl of plasma from 100 μl of whole blood in less than 10 min. Then, we demonstrate that our device is valid for clinical studies by measuring the adsorption of interleukins through our system. This adsorption is reproducible for interleukins IL6, IL8, and IL10 but not for TNFα. Hence, our BFE is valid for clinical diagnostics with simple calibration prior to performing any measurement.  相似文献   

Yo-Yo IR2 testing of elite and sub-elite soccer players: Performance, heart rate response and correlations to other interval tests     

J Ingebrigtsen  M Bendiksen  MB Randers  C Castagna  P Krustrup  A Holtermann 《Journal of sports sciences》2012,30(13):1337-1345

Abstract We examined performance, heart rate response and construct validity of the Yo-Yo IR2 test by testing 111 elite and 92 sub-elite soccer players from Norway and Denmark. VO(2)max, Yo-Yo IR1 and repeated sprint tests (RSA) (n?=?51) and match-analyses (n?=?39) were also performed. Yo-Yo IR2 and Yo-Yo IR1 performance was 41 and 25% better (P??0.05). For top-teams, Yo-Yo IR2 performance (28%) and sprinting distance (25%) during match were greater (P?相似文献   

Gamma heavy chain disease in a patient with rheumatoid arthritis – a laboratory evaluation     

Wibke Johannis  Jenny Blommer  Andreas R. Klatt  Joerg H. Renno  Klaus Wielckens 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2012,22(3):373-379

Introduction:

Heavy chain diseases (HCD) are neoplastic proliferations of B cells which secrete truncated immunoglobulin heavy chains without associated light chains. Being rare and probably underdiagnosed diseases the aim of this report is to show an additional case of gamma heavy chain disease in a 48 year old female patient with rheumatoid arthritis focusing on the laboratory presentation.

Materials and methods:

Laboratory work-up included agarose gel electrophoresis (AGE), capillary zone electrophoresis (CZE), immunofixation and nephelometrically determined immunoglobulin and immunoglobulin subclasses of the patient’s serum. Urine samples were also subjected to immunofixation and to a SDS-PAGE with consecutive immunoblot.

Results:

Nephelometrically measured elevated IgG concentrations were noted in combination with a decreased gamma globulin region and an increased beta globulin region on AGE. A definite monoclonal spike was not identified on AGE but at least suspected on CZE; finally serum and urine immunofixation demonstrated a monoclonal gamma heavy chain devoid of any corresponding light chains confirming the diagnosis of HCD. Analysis of the gamma heavy chain (HC) with means of SDS-PAGE revealed proteins of 40 kD and 80 kD most likely presenting a truncated HC in its monomeric and dimeric form and possibly leading to the failure of IgG-subclass typing with the applied IgG subclass antisera.

Conclusion:

This case report illustrates a new case of gamma HCD demonstrating variable laboratory manifestations and therefore the need for heightened awareness concerning this disease when confronted with abnormal and discrepant protein profiles in routinely applied laboratory tests.  相似文献   

Exposure to bullying,reactions and psychological adjustment of secondary school students     

Dabie Nabuzoka  John Andreas Rønning  Bjørn Helge Handegård 《教育心理学》2009,29(7):849-866

A sample of 575 secondary school students aged 11–15 years was administered a checklist on experiences of bullying, then divided into groups of victims, witnesses and not exposed, and by gender. Participants completed the Strengths and Difficulties Questionnaire on psychosocial adjustment. Victims and witnesses completed another questionnaire on the extent to which they would endorse retaliation/vengeance and avoidance towards the perpetrator. Girls reported being victimised significantly more than boys. Amongst victims, boys scored higher than girls on desire for retaliation/vengeance and on externalising behaviours; girls scored higher on internalising behaviour. Experience of bullying victimisation, rather than merely witnessing it or not being exposed to it, was associated with internalising behaviours for both boys and girls. These measures of psychosocial adjustment were associated with the desire for retaliation/vengeance. Implications are discussed of the links between gender, exposure to bullying, reactions and psychosocial adjustment of secondary school children.  相似文献