排序方式： 共有98条查询结果，搜索用时 531 毫秒
51.
Thiago Telles Renato Barroso Augusto Carvalho Barbosa Diego Fortes de Souza Salgueiro Emilson Colantonio Orival Andries Júnior 《Journal of sports sciences》2015,33(10):1084-1092
This study investigated the effects of hand paddles, parachute and hand paddles plus parachute on the inter-limb coordination of butterfly swimming. Thirteen male swimmers were evaluated in four random maximal intensity conditions: without equipment, with hand paddles, with parachute and with hand paddles + parachute. Arm and leg stroke phases were identified by 2D video analysis to calculate the total time gap (T1: time between hands’ entry in the water and high break-even point of the first undulation; T2: time between the beginning of the hand’s backward movement and low break-even point of the first undulation; T3: time between the hand’s arrival in a vertical plane to the shoulders and high break-even point of the second undulation; T4: time between the hand’s release from the water and low break-even point of the second undulation). The swimming velocity was reduced and T1, T2 and T3 increased in parachute and hand paddles + parachute. No changes were observed in T4. Total time gap decreased in parachute and hand paddles + parachute. It is concluded that hand paddles do not influence the arm-to-leg coordination in butterfly, while parachute and hand paddles + parachute do change it, providing a greater propulsive continuity. 相似文献
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Flávia Torreão Thiemann Luiz Marcelo de Carvalho Haydée Torres de Oliveira 《Environmental Education Research》2018,24(10):1441-1446
AbstractThis Editorial to the current collection provides a brief historical, cultural, regional and contemporary picture of environmental education research in Brazil. Its main purpose is to offer readers a short background and orientation to the collection, and in so doing, illustrate how its contributions relate to some wider tendencies, trends and issues in environmental education, as well as to different locales of research and knowledge generation in the country. Of particular note for environmental education in Brazil are: the effects of social and political backdrops and issues, the unique environments on which environmental education is grounded, and how environmental education research, in turn, may echo or influence particular educational and public policies. 相似文献
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Women are underrepresented in science careers. To overcome this, it is important to explore how to encourage girls to continue to study science. This intervention involved girls aged 12–14 attending interactive science sessions at a university. Girls completed questionnaires before and after the session. Through the intervention, girls became more likely to believe they could succeed in science and saw it as both more useful and interesting. However, the timing of this intervention appeared to be too late. Many girls had already decided on a career and stated that they would be unlikely to continue to study science if it was not needed in their chosen career. 相似文献
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The main purpose of this paper is to report our first attempts to study how and where it is possible to use the history of physics in a high school course. We made four activities based on historical data connected to heat and temperature. Filming was extremely important for the type of study we made since it allowed to draw out the situations we considered most relevant whenever necessary. We selected and analysed all the episodes in which there was any allusion (explicit or not) to history, presented in the form of questions or doubts, or portraying explanations of facts and phenomena built up based on reconstructions provided by the historical approach. 相似文献
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Carvalho Lucila Nicholson Tom Yeoman Pippa Thibaut Patricia 《Learning Environments Research》2020,23(3):307-329
Learning Environments Research - Significant funding is devoted across the world to transforming traditional classrooms into flexible learning environments. These efforts are often... 相似文献
56.
Diana Soares Paula Carvalho Diana Dias 《The International Journal of Art & Design Education》2020,39(2):392-404
New and flexible educational paradigms, based on creative, innovative and open‐minded competences, are required in the development of curricula in design, working as an essential skill toolkit for future designers, particularly in higher education. This study aims to explore how learning outcomes, usually expressed by the knowledge, skills, abilities, attitudes and competences expected to be achieved by students as a result of an educational experience, are defined and formulated in design study programmes in Portugal. The investigation relies on the linguistic analysis of a corpus composed of a collection of learning outcomes extracted from the Portuguese undergraduate and post‐graduate study programmes in design. The analysis was performed through the application of natural language tools and resources to that corpus. Specifically, we used computational lexicons and grammars to gather information on word frequency, lexical density, syntactic distribution and the morphology used in texts. Additional discourse dimensions, such as the length of sentences, the frequency of specific linguistic patterns, and the presence of subjective items, like evaluative adjectives, were also considered. Results suggest that Portuguese design and art higher education institutions are committed to follow the learning outcomes recommendations, trying to identify measurable ‘design’ skills. Moreover, the results show that, despite of being confined to 1,000 characters, learning outcomes are expressed differently, both in terms of lexicon and grammar, depending on the study cycles, fostering the idea that skills and competences required become more complex as the level of qualification increases. 相似文献
57.
Thaís Reichert Natália Carvalho Bagatini Nicole Monticelli Simmer Andressa Pellegrini Meinerz Bruna Machado Barroso Alexandre Konig Garcia Prado 《Research quarterly for exercise and sport》2019,90(1):46-53
Purpose: To compare the effects of three water-based resistance trainings on neuromuscular parameters of older women. Method: Thirty-six women were randomized to groups: simple set of 30 seconds (1 × 30 s, 66.41 ± 4.71 years, n = 12), multiple sets of 10 seconds (3 × 10 s, 66.50 ± 4.74 years, n = 11), and simple set of 10 seconds (1 × 10 s, 65.23 ± 3.93 years, n = 13). Maximal isometric strength concomitantly with neuromuscular activity during extension and flexion knee was evaluated. In the same exercises, rate of force development at different time intervals was measured. Finally, functional capacity was assessed. Results: All trainings promoted similar improvements in the rate of force develpment of extension (effect size RFD 50 ms: 1 × 30 s .49, 3 × 10 s .67, 1 × 10 s .65; ES RFD 100 ms: 1 × 30 s .76, 3 × 10 s .80, 1 × 10 s .63; ES RFD 250 ms: 1 × 30 s .31, 3 × 10 s .49, 1 × 10 s .37) and flexion knee (ES RFD 50 ms: 1 × 30 s .59, 3 × 10 s .31, 1 × 10 s .48; ES RFD 100 ms: 1 × 30 s .41, 3 × 10 s .44, 1 × 10 s .42; ES RFD 250 ms: 1 × 30 s .57, 3 × 10 s .36, 1 × 10 s .43; ES RFD maximal: 1 × 30 s .63, 3 × 10 s .23, 1 × 10 s .26), however only the 3 × 10 s group improved the performance in the 8-foot up-and-go test (ES 3 × 10 s: .93, 1 × 30: .39, 1 × 10 s: .23). There was a maintenance of the isometric force and neuromuscular activity, except for the activity of the rectus femoris that showed an increase after training in all groups (ES 3 × 10 s: .04, 1 × 30: .36, 1 × 10 s: .50). Conclusion: Water-based resistance training using simple or multiple sets promotes the same gains in rapid strength, however only multiple sets induced improvement on functional capacity. 相似文献
58.
João Aragão e Pina Ana Margarida Passos Helena Carvalho M. Travis Maynard 《Journal of sports sciences》2019,37(6):692-700
Football is central to the lives of countless individuals around the globe. While most of the attention of those passionate about the sport is focused on the players, football referees are often just as important in shaping the outcome of the games. Therefore, research is increasingly examining the role of referees. Even so, our understanding of the factors that create an excellent football referee is still scarce.
Based on our analysis of the opinions of 24 football experts, we demonstrate the multidimensionality of excellence in the performance of football referees. From a Categorical Principal Components Analysis (CatPCA), we were able to pinpoint that football referee excellence is shaped by three distinct dimensions: individual preparation, game preparation and game management. Additionally, we were able to see if these perceptions were different from individuals “within” the game versus those “outside” the game. Namely, we used CatPCA to graphically display the main correlations between the latent dimensions of football refereeing performance and the “inside” and “outside” perspective of the game. The findings of our work contribute towards the knowledge of the factors that shape football referee excellence, while also highlighting areas in need of additional research attention. 相似文献
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Nélson Carvalho Gustavo Puntel Philipe Correa Priscila Gubert Guilherme Amaral Jefferson Morais 《Journal of sports sciences》2013,31(9):923-935
Abstract The mechanisms of action of physical agents commonly used to treat skeletal muscle lesions are not well understood. In this study, we examined whether the modulation of oxidative stress is involved in the beneficial effects of cold and heat on gastrocnemius muscle strain injury. Adult male Wistar rats were submitted to a strain injury and treated with therapeutic agents in an isolated or combined form. Strain damage caused an increase in muscle and blood oxidative damage. We suggest that this oxidative damage might be related to the impairment of the muscle cell structure, since we observed a significant positive correlation between increased plasma creatine kinase activity and both oxidized dichlorofluoresceine and lipid peroxidation levels in muscle and blood. The intensity of the inflammatory response appears also to be an important factor in the genesis of oxidative damage immediately following a muscle strain injury. Therapeutic cold seems to be more effective in preventing the damage induced by a strain injury, possibly due to its capacity to control the impairment of muscle cell structure and to modulate the intensity of the inflammatory response that follows a muscle strain injury. 相似文献