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Manuela Guilherme 《Journal of moral education》2017,46(4):422-434
This article claims that Freire’s work offers an important ground for a potential theory of intercultural ethics and, for that purpose, examines his ideas at different levels: (1) the ontological; (2) the ideological; (3) the political; (4) languages and languaging; and (5) cultural identity and diversity. Freire never used the word ‘intercultural’, although it is suggested here that this is due to the fact that terminology related to cultural diversity has changed over time and in his day this term was not yet common currency. Moreover, Freire uses more often the term ‘multiculturalidade’ rather than ‘multiculturalismo’ (multiculturalism) since the former suffix ‘-dad(e)’ has a different meaning which refers to the ontological nature of the condition and is more usual in both Portuguese and Spanish. This article also argues for the relevance of a theory of intercultural ethics in the contemporary world that imprints (inter)cultural flexibility on the current hermeneutics of ethics while preventing excessive abuses on behalf of relativism, dogmatism, essentialism and fundamentalism. 相似文献
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Research into violence in schools has been growing steadily at an international level, and has shown high degrees of violence at various different levels. Given the seriousness of the problem, finding ways of responding to this issue in schools becomes an imperative for educationists. In this article, we engage with this problem by defending the view that whilst violence might be endemic in schools, there are also real possibilities for working towards different ways of being in relationship in schools. Firstly, we discuss Galtung’s understanding of violence and peace, paying particular attention to his concepts of structural and cultural violence, peacekeeping, peacemaking and peacebuilding. Secondly, we connect Galtung’s notions of peacemaking to Buber’s philosophy of dialogue, in order to make a case for an ‘epistemological shift’ which might enable individuals and communities to achieve ‘peace’. Finally, we direct our argument to the education context and put forward some concrete proposals for peacemaking in schools. 相似文献
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Effective force and economy of triathletes and cyclists 总被引：1，自引：0，他引：1
Candotti CT Ribeiro J Soares DP De Oliveira AR Loss JF Guimarães AC 《Sports biomechanics / International Society of Biomechanics in Sports》2007,6(1):31-43
The effective force applied on the crank, the index of pedalling effectiveness, and the economy of movement at 60, 75, 90, and 105 rev/min cadences were examined in nine cyclists and eight triathletes. Tests were performed on two days. Maximal oxygen uptake was measured and the second ventilatory threshold was estimated on day 1 using a stationary bicycle. On day 2, the four different cadences were tested at about 5% below the second ventilatory threshold. A strain gauge instrumented clip-less pedal mounted on the bicycle enabled us to measure the normal and tangential forces exerted on the pedal, while the pedal and crank angles were monitored with the aid of a video system. Based on this information, the effective force and the index of pedalling effectiveness were calculated. Cyclists produced significantly more effective force and a higher index of pedalling effectiveness at 60 and 75 rev/min and were significantly more economic at all cadences than triathletes. The significant and positive correlation between effective force and economy at all cadences suggests that improvement of the effective force would reflect on economy. 相似文献
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Pedro Schons Rodrigo Gomes Da Rosa Gabriela Fischer Guilherme Pereira Berriel Carolina Gassen Fritsch Fábio Yuzo Nakamura 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(5):515-526
Knee peak torque (PT) is associated to jump performance in volleyball players. It is not clear whether muscle strength imbalances of the knee joint can influence jump performance. The purpose of study was to analyse the association between PT and knee muscular imbalances with jump performance in professional volleyball players. Eleven elite male volleyball players (90.3 ± 9.7 kg body mass and 1.94 ± 0.06 m height) were evaluated in an isokinetic dynamometer at speeds of 60, 180 and 300 deg/s. Muscle strength imbalances were obtained through calculation of contralateral deficit between limbs and the conventional ratio (hamstrings/quadriceps). Countermovement jump (CMJ) was performed on a force plate to calculate mechanical power and height. Association was found between knee extensor PT at 180 deg/s with CMJ power (r = 0.610, p = 0.046). Conventional ratio at 300 deg/s showed negative association with CMJ (r = ?0.656, p = 0.029). The optimal ratio between knee extensors PT in relation to the flexors PT is associated with the greater mechanical power in CMJ. Contralateral deficit does not seem to be associated with the CMJ performance. Considering the knee extensor PT is associated with CMJ power, our findings suggest that strength-based training in volleyball athletes should not omit the conventional muscle ratio. 相似文献
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Marcelo Peduzzi de Castro Pedro Fonseca Sara Tribuzi Morais Márcio Borgonovo-Santos Eduardo Filipe Cruz Coelho Daniel Cury Ribeiro 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(1):39-50
The aim of the present study was to determine which approach to calculating shoulder ratios is the most sensitive for determining shoulder torque imbalance in handball players. Twenty-six participants (handball athletes, n = 13; healthy controls, n = 13) performed isokinetic concentric and eccentric shoulder internal rotation (IR) and external rotation (ER) assessment at 60, 180 and 300°/s. We used eight approaches to calculating shoulder ratios: four concentric (i.e. concentric ER torque divided by concentric IR torque), and four functional (i.e. eccentric ER torque divided by concentric IR torque) at the velocities of 60, 180 and 300°/s for both IR and ER, and combining 60°/s of ER and 300°/s of IR. A three factorial ANOVA (factors: shoulder ratios, upper limb sides, and groups) along with Tukey’s post-hoc analysis, and effect sizes were calculated. The findings suggested the functional shoulder ratio combining 60°/s of ER and 300°/s of IR is the most sensitive to detect differences between upper limbs for handball players, and between players and controls for the dominant side. The functional shoulder ratio combining 60°/s of ER with 300°/s of IR seems to present advantages over the other approaches for identifying upper limb asymmetries and differences in shoulder torque balance related to throwing. 相似文献
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This article studies the conceptions of the interior of the Earth held by Portuguese elementary school children and senior citizens. Several studies were conducted regarding conceptions related to Earth sciences, such as rocks, minerals, earthquakes geological time, and Earth structure. Most of these studies involved students enrolled in compulsory education, some involved higher education students, several involved teachers, and only a few involved adults. The majority of the results showed that many misconceptions are held by people of all ages. Similar results were found in this study, as both children and senior citizens revealed several misconceptions. The research resorted to a questionnaire based on a drawing task so as to find out the way that children and senior citizens imagine the structure and composition of the interior of our planet. A comparison between children’s and senior citizens’ drawings was made, as well as a comparison between those drawings and the historical models of the internal structure of the Earth. We found that only a small number of children and even a smaller number of senior citizens recognize that the interior of the Earth is organized in concentric layers. They assume that soil and water are a common part of the internal composition of our planet. Similarities between the drawings and the historical models were identified, particularly similarities related to Gautier’s model, which accepts the possibility of the existence of life in the interior of the planet as it happens on its surface. 相似文献
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João Paulo Lopes-Silva Jonatas Ferreira Da Silva Santos Guilherme Giannini Artioli Irineu Loturco Chris Abbiss Emerson Franchini 《European Journal of Sport Science》2018,18(3):431-440
Purpose: To investigate the effect of sodium bicarbonate (NaHCO3) on performance and estimated energy system contribution during simulated taekwondo combat. Methods: Nine taekwondo athletes completed two experimental sessions separated by at least 48?h. Athletes consumed 300?mg/kg body mass of NaHCO3 or placebo (CaCO3) 90?min before the combat simulation (three rounds of 2 min separated by 1 min passive recovery), in a double-blind, randomized, repeated-measures crossover design. All simulated combat was filmed to quantify the time spent fighting in each round. Lactate concentration [La?] and rating of perceived exertion (RPE) were measured before and after each round, whereas heart rate (HR) and the estimated contribution of the oxidative (WOXI), ATP (adenosine triphosphate)-phosphocreatine (PCr) (WPCR), and glycolytic (W[ La? ]) systems were calculated during the combat simulation. Results: [La?] increased significantly after NaHCO3 ingestion, when compared with the placebo condition (+14%, P?=?0.04, d?=?3.70). NaHCO3 ingestion resulted in greater estimated glycolytic energy contribution in the first round when compared with the placebo condition (+31%, P?=?0.01, d?=?3.48). Total attack time was significantly greater after NaHCO3 when compared with placebo (+13%, P?=?0.05, d?=?1.15). WOXI, WPCR, VO2, HR and RPE were not different between conditions (P?>?0.05). Conclusion: NaHCO3 ingestion was able to increase the contribution of glycolytic metabolism and, therefore, improve performance during simulated taekwondo combat. 相似文献