Effect of a Brazilian Jiu-jitsu-simulated tournament on strength parameters and perceptual responses     

Daniele Detanico  Rodolfo André Dellagrana  Marina Saldanha da Silva Athayde  Rafael Lima Kons  Angel Góes 《Sports biomechanics / International Society of Biomechanics in Sports》2017,16(1):115-126

This study aimed to analyse the effects of a simulated Brazilian jiu-jitsu (BJJ) tournament on vertical jump performance, grip strength test and perceived effort responses. 22 male BJJ athletes participated in a simulated tournament consisting of three 7 min matches separated by 14 min of rest. Kimono grip strength test (KGST), counter movement jump (CMJ) and rate of perceived exertion (RPE) were measured before and after each match, while RPE of specific areas was assessed after three matches. ANOVA for repeated measures was used to compare strength parameters after each match with the level of significance set at 5%. The key results showed a significant decrease of jump height (p = 0.001) and net vertical impulse in the CMJ (p = 0.031), as well as a reduction of the number of reps in the KGST (p < 0.001). A significant increase of RPE was found throughout the matches (p < 0.001). Considering the RPE in specific areas, no differences were observed between the upper and lower body (p = 0.743). We conclude that the BJJ simulated tournament generated a decrease of performance in both upper and lower limbs and provoked a progressive increase in the effort perception over the matches.  相似文献   

The Adoption of the Compact Disk Player: An Event History Analysis for the Netherlands     

Harrie Hansman  Clara H. Mulder  René Verhoeff 《Journal of Cultural Economics》1999,23(3):221-232

The compact disk (CD) player was one of the major audio innovations of the 1980s in the Netherlands. For studies of the temporal and social diffusion pattern of the CD player and the compact disks, both cultural and economic theories about innovations and music consumption are available. In this paper, these theories are combined in six working hypotheses concerning earlier adoption. The empirical analysis includes both time-invariant and time-varying variables and consumer characteristics. Event history analysis, the technique used in this article, enables one to incorporate these kinds of variables simultaneously in a dynamic model. Compared with the diffusion models usually employed by means of longitudinal analysis, event history analysis is a significant improvement in studying the development of the CD market in the Netherlands.  相似文献   

Learning from the experts: practice activities of expert decision makers in sport   总被引：3，自引：0，他引：3  

Baker J  Côté J  Abernethy B 《Research quarterly for exercise and sport》2003,74(3):342-347

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Un inventaire des notions impliquées dans un enseignement général de mathématique à l'école secondaire     

Théo Bernet  André Delessert 《Educational Studies in Mathematics》1972,4(4):450-465

Sans résumé  相似文献   

The position of geometry in mathematical education     

André Revuz 《Educational Studies in Mathematics》1971,4(1):48-52

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Book reviews     

Finbarré Fitz Patrick  Nicholas Hawkes  James Cummins  Alison M. Pask  Carol Myers Scotton  R. N. Srivastava 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1978,24(3):423-434

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Les pièges de l'enseignement des mathématiques     

André Revuz 《Educational Studies in Mathematics》1968,1(1-2):31-36

Sans résumé  相似文献   

Review on the characterisation of ancient stringed musical instruments varnishes and implementation of an analytical strategy     

Jean-Philippe Echard  Bertrand Lavdrine 《Journal of Cultural Heritage》2008,9(4):420-429

For the last 60 years, varnishes of ancient musical instruments, particularly stringed instruments of the violin family dating 17th and 18th centuries, have been analysed to establish their chemical composition and multi-layered structure. The objective was to rediscover the technology for making the varnish of esteemed Italian violins and to reconstitute it. This paper reviews the physico-chemical studies published on such varnishes and also focuses on a research project carried out since 2002 at the Musée de la musique in Paris. It aims to apply in a comprehensive way different non-destructive or micro destructive methods (Py-GC/MS, IR microscopy, SEM/EDX, EDXRF, synchrotron radiation-based techniques, …) to the study of a large and representative number of ancient varnished musical instruments from a museum collection.  相似文献   

The health sciences librarian as scientific entertainer     

Blanca San José Montano 《Journal of the Medical Library Association》2015,103(2):103-106

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Pride as moral motive: moral pride and prosocial behaviour / El orgullo como motivación moral: orgullo moral y conducta prosocial     

Itziar Etxebarria  María-José Ortiz  Pedro Apodaca  Aitziber Pascual  Susana Conejero 《Infancia y Aprendizaje》2015,38(4):746-774

Moral pride, namely the pride generated by morally positive behaviour, can foster prosocial behaviour. To demonstrate this, two quasi-experimental studies were conducted with nine- to 11-year-old children. Study 1 analysed the effect of the pride felt after engaging in prosocial behaviour, in four classrooms from two different schools (N = 94). Study 2 analysed the effect of the pride generated by the evocation of a past example of one’s own prosocial behaviour, in four classrooms from another school (N = 77). The hypothesis was supported in Study 1 but not in Study 2. Interesting correlations were found between dispositional moral pride (measured using a scale designed ad hoc) and other relevant variables in the moral field: intention to engage in prosocial behaviour, habitual prosocial behaviour and dispositional empathy. In general, these studies attest to the importance of moral pride, both dispositional and that felt in a specific situation, in moral life.  相似文献