Comparison of bungee-aided and free-bouncing accelerations on trampoline

Trampolines remain the single best apparatus for the training of aerial acrobatics skills. Trampoline use has led to catastrophic injuries from poor landings. Passive injury prevention countermeasures such as specialized matting have been largely ineffective. Active injury countermeasures such as hand spotting, “throw-in” mats, and overhead spotting rigs provide the most effective methods. The recent addition of several bungee cords between the ropes and the gymnast’s spotting harness has resulted in altered teaching and coaching of trampoline-related acrobatics. Bungee cords have eliminated the need for a coach/spotter to manage the ropes during skill learning. The purpose of this study was to assess the influence of the addition of bungee cords with a traditional rope-based overhead spotting rig. There is a paucity of any research involving trampoline injury countermeasures. Ten experienced trampoline acrobatic athletes (5 males, 5 females) from the U.S. Ski and Snowboard Association Aerials National Team performed 10 bounces as high as they could control. A triaxial accelerometer (200 Hz) characterized 10 bungee cord aided bounces and 10 freebounces on a trampoline from each athlete. Bed contact times, peak accelerations, and average accelerations were obtained. The results supported our hypotheses that the bungeeaided bounces achieved only 40% (average) to 70% (peak) of the free-bouncing accelerations (all ρ 0.092). The bed contact time was approximately 65% longer during the bungee-aided bounces (ρ < 0.001). Bungee cords may reduce the harshness of landings on trampoline

TEMPORAL, FORCE AND POSTURAL ANALYSIS OF RELEVÉ EN POINTE IN NOVICE AND INTERMEDIATE DANCERS

This study compares temporal, vertical force and postural sway variables between novice and intermediate dancers performing echappé relevé en pointe (a); to determine the influence of experience on intra-individual variability on the aforementioned performance parameters (b). Six trials performed by four novice and four intermediate dancers on a force platform were analysed. Large differences between the two groups of dancers were observed in the duration of the transition phase from the plié to the en pointe and in the length of sway path of the CoP during the en pointe phase. High loading rate was recorded when landing en pointe. Both groups of dancers showed a relatively large rate of intra-individual variability that can be seen as a task-relevant learning facilitator factor

Marketing cultural : uma análise comparativa em três bancos no Brasil /

Orientador : Zaki Akel SobrinhoDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Sociais Aplicadas, Programa de Pós-Graduação em Administração. Defesa: Curitiba, 2004Inclui bibliografiaÁrea de concentração: Estratégia e organizaçõe

GRAMÁTICA E ENSINO: UMA PERSPECTIVA DE INTERAÇÃO

RESUMO: A pesquisa tem como objetivo geral analisar se a gramática normativa é desenvolvida no livro didático do 9º ano da Coleção Teláris, em vigor no município de Teixeira de Freitas-BA, de forma integrada com a leitura, interpretação, produção textual e análise linguística, a partir dos gêneros textuais; como específicos, verificar se há uma diversidade de gêneros textuais e orais no livro didático bem como se as atividades contemplam situações formais e informais de uso, e, por fim, propiciar discussões e reflexões sobre a importância da escolha do manual didático.  Para tanto, utilizamos como referencial teórico, Marcuschi (2008), os PCNs (1998), Antunes (2003), Possenti (2001), Lopes-Rossi (2006), Bezerra (2005), dentre outros. A metodologia é qualitativa e quantitativa. Constata-se que os aspectos gramaticais, por sua vez, são contextualizados, colaborando com a reflexão crítica do aluno, bem como, parte de um gênero textual para as definições; dessa forma, as atividades envolvendo a  gramática, frequentemente, perpassam pela leitura, interpretação, produção textual e análise linguística, propiciando uma aprendizagem significativa para o aluno; ainda o livro didático contempla uma diversidade de gêneros textuais e orais e apresenta a distinção das situações formais e informais da língua; 

Exploratory investigation of impact loads during the forward handspring vault

The purpose of this study was to examine kinematic and kinetic differences in low and high intensity hand support impact loads during a forward handspring vault. A high-speed video camera (500 Hz) and two portable force platforms (500 Hz) were installed on the surface of the vault table. Two-dimensional analyses were conducted on 24 forward handspring vaults performed by 12 senior level, junior Olympic program female gymnasts (16.9 ±1.4 yr; body height 1.60 ±0.1 m; body mass 56.7 ±7.8 kg). Load intensities at impact with the vault table were classified as low (peak force 0.8 x body weight). These vaults were compared via crucial kinetic and kinematic variables using independent t-tests and Pearson correlations. Statistically significant (p < 0.001) differences were observed in peak force (t(24) = 4.75, ES = 3.37) and time to peak force (t(24) = 2.07, ES = 1.56). Statistically significant relationships between the loading rate and time to peak force were observed for high intensity loads. Peak force, time to peak force, and a shoulder angle at impact were identified as primary variables potentially involved in the determination of large repetitive loading rates on the forward handspring vault

Professores e pesquisa: da formação ao trabalho docente, uma tessitura possível

This paper is the result of a research called Pedagogic Research in Education Schools: Aspects of the Work Conducted by Teachers developed at the post-doctorate training level at Fundação Carlos Chagas. It proposes a reflection on the concept of research that seeks to define and clarify their specific features, and brings about some of the differences that define the university, the school and the pedagogic researches, indicating the relevance of the last one in the teachers’ training process. The relationship between research and teachers’ training is highlighted as well as the need of a curricular restructuring in Education courses , in order to think research as a forming axis in teachers’ formation. Furthermore, the contributions of research in the teaching formation and practice is addressed, along with the study of school daily activities, focused on the necessary moment to put the assumptions underlying teachers’ practices into practice and also to experience socialization among students, teachers and other professionals in this field of knowledge.O presente texto resulta de uma pesquisa intitulada A Pesquisa pedagógica nos cursos de Licenciatura em Pedagogia: aspectos do trabalho desenvolvido pelos professores, desenvolvida em nível de estágio pós-doutoral junto à Fundação Carlos Chagas. Propõe-se uma reflexão a respeito do conceito de pesquisa, que busca definir e explicitar suas características específicas e trazer algumas diferenças que marcam a pesquisa acadêmica, a pesquisa escolar e a pesquisa pedagógica, apontando esta última como relevante no processo formativo do professor. Ressalta-se a relação entre pesquisa e formação de professores, apontando também a necessidade de uma reestruturação curricular dos cursos de Pedagogia, de modo que a pesquisa possa ser pensada como eixo formativo da formação de professores. Ademais, discutem-se as contribuições da pesquisa na formação e prática docente, bem como o estudo do cotidiano escolar, enfocado como momento necessário para colocar em prática pressupostos subjacentes à prática do professor e vivenciar experiências de socialização entre alunos, professores e demais profissionais desse campo de saber