排序方式： 共有80条查询结果，搜索用时 265 毫秒
31.
Lara Elena Gomes Vera Diogo Flávio Antônio de Souza Castro João Paulo Vilas-Boas Ricardo J. Fernandes Pedro Figueiredo 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(4):354-365
Synchronised swimming involves a variety of sculling movements essential for body support and propulsion but its study is scarce. We aimed to biomechanically compare standard and contra-standard sculling techniques, and to observe the relationship between measures. Six synchronised swimmers performed two, 30 s maximal intensity, fully tethered standard and contra-standard sculling motions. Kinetic and kinematic data were obtained using a load-cell and underwater cameras, respectively. Force decreased along both techniques’ bouts, but no differences in-between techniques were noted for any kinetic variables. Standard sculling presented a higher cycle rate and a lower elbow mean angle than the contra-standard sculling (2.4 ± 0.3 vs. 2.0 ± 0.2 cycles/s and 134.1 ± 5.8 and 141.5 ± 4.7°, p < 0.05). In the standard sculling, by removing and maintaining the variation between participants (r w and r, respectively), the absolute mean force was directly related with cycle rate (r w = 0.60) and wrist angular velocity during flexion (r = 0.82), while in the contra-standard condition the force was inversely associated with wrist mean angle (r = ?0.95) and directly with hand speed (r w = 0.76), and elbow angular velocity (r w ≈ 0.60). Therefore, technique learning and training require different attention by coaches and swimmers. 相似文献
32.
OBJECTIVE: The purpose of this study was to examine a comprehensive inpatient treatment program designed for adult survivors of childhood abuse with posttraumatic stress disorder (PTSD). METHOD: One hundred and thirty-two formerly abused individuals completed clinician-administered and self-administered measures of PTSD symptomatology at admission and discharge. All participants experienced a range of physical, sexual, and/or emotional abuse as children prior to the age of 17. Approximately one-third of these individuals also completed measures at 3-months postdischarge and 1-year postdischarge. Data were collected using a clinician-administered PTSD measure and self-administered PTSD measure at admission and discharge. On admission, all participants met criteria for a diagnosis of PTSD. RESULTS: Analyses revealed that the program was effective in reducing symptoms from admission to discharge. Additionally, treatment gains were maintained at 1-year postdischarge. CONCLUSION: The findings of this investigation suggest that the current intensive inpatient group treatment program appears to reduce PTSD symptoms effectively for a sample of adult survivors of abuse. 相似文献
33.
Anabela C. Alves Rui M. Sousa Sandra Fernandes Elisabete Cardoso Maria Alice Carvalho Jorge Figueiredo 《European Journal of Engineering Education》2016,41(2):123-141
Project-Based Learning (PBL) has been implemented in the first year of the Industrial Engineering and Management programme at the University of Minho, Portugal, since 2004/2005. The purpose of this paper is to analyse and discuss teachers' experiences in PBL in this programme and to explore its implications for student learning and for teaching practices in higher education. For data collection, the research method used was written narratives to these teachers, at the end of the PBL semester. Findings suggest that teachers express a positive view of PBL as a learning approach. They identify student motivation and engagement, along with a better understanding of the application of concepts in real-life situations, as important outcomes of the project for students. Besides this, teachers also highlight the importance of the development of transversal skills by students throughout the project. Recommendations for future work and implications for practice will also be discussed. 相似文献
34.
Yousef Rezaei Chianeh Rashmi Manjunath Krishnananda Prabhu Donald Fernandes M. Vidyasagar Asha Kamath 《Indian journal of clinical biochemistry : IJCB》2014,29(2):238-241
Oral squamous cell carcinoma is one of the most common malignancies recognized. Biomarkers which can predict presence of cancer and its progression can help in better management of these disorders. Over production of lipid peroxidation byproducts and disturbances in antioxidant defense system have been implicated in the pathogenesis of several diseases including oral cancer. Studies have shown a correlation of butyrylcholinesterase (BChE), with tumourigenesis, cell proliferation and cell differentiation. Earlier we have observed a significant elevation in plasma BChE and protein thiols in oral cancer patients which correlated well with stages of cancer. As it was not clear whether the above markers will be altered in saliva of oral cancer patients this study was undertaken. Institutional Ethics Committee gave permission to carry out this study. Total of 55 subjects comprising healthy controls (n = 30) and biopsy proven oral cancer patients (n = 25) consented to participate in this study. Salivary samples from cases were taken before any definitive treatment. Protein thiols and BChE were estimated in salivary samples using validated assay methods. Oral cancer patients had a significant increase in pre-treatment salivary BChE levels (p ≤ 0.001) and a significant decrease (p ≤ 0.001) in salivary thiols as compared to respective values in controls. Salivary protein thiols and BChE may have a role in pathophysiology of oral cancer. Saliva can be used as a potential non-invasive screening tool in oral cancer patients. 相似文献
35.
Teachers’ role in curriculum design is a broad question that inspires political educational reforms among European countries, a trend that even extends to higher education politics. The perspective on teachers’ role in curriculum, both at the level of the policies and of the practices, shapes recent educational reforms in Portugal. These are the concerns underlying our research that intends to substantiate school teachers’ involvement in curriculum development as it is experienced by them, and while comparing their views to the roles they are attributed in the political and academic dominant discourses. To reach teachers’ perceptions, we distributed questionnaires which were completed by 214 teachers in primary and secondary schools. We could conclude that the enactment of a professional identity on the basis of teacher assumption of their role as real curriculum designers is still far from being achieved. 相似文献
36.
Educational Psychology Review - Handwriting (HW) training seems to boost recognition of visual graphs and learning to read more than other learning experiences. However, effects across studies... 相似文献
37.
Fluid and electrolyte balance in elite male football (soccer) players training in a cool environment
There are few data in the published literature on sweat loss and drinking behaviour in athletes training in a cool environment. Sweat loss and fluid intake were measured in 17 first-team members of an elite soccer team training for 90 min in a cool (5°C, 81% relative humidity) environment. Sweat loss was assessed from the change in body mass after correction for the volume of fluid consumed. Sweat electrolyte content was measured from absorbent patches applied at four skin sites. Mean (?± s) sweat loss during training was 1.69?±?0.45 l (range 1.06?-?2.65 l). Mean fluid intake during training was 423?±?215 ml (44?-?951 ml). There was no apparent relationship between the amount of sweat lost and the volume of fluid consumed during training (r 2 = 0.013, P = 0.665). Mean sweat sodium concentration was 42.5?±?13.0 mmol?·?l?1 and mean sweat potassium concentration was 4.2?±?1.0 mmol?·?l?1. Total salt (NaCl) loss during training was 4.3?±?1.8 g. The sweat loss data are similar to those recorded in elite players undergoing a similar training session in warm environments, but the volume of fluid ingested is less. 相似文献
38.
Ulysses Fernandes Ervilha Fernando de Moraes Fernandes Camila Carvalho de Souza Joseph Hamill 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(5):665-677
ABSTRACT Fractionated reaction time can be used to determine distinct epochs known as pre-motor, response and movement times (MTs) of a reaction time task. The purpose of this study was to compare elite and novice athletes performing a taekwondo kick in terms of the fractionated reaction time and electromyography (EMG) activation patterns of the muscles of the striking lower limb and the lower back. We hypothesised that the pre-motor time, response time (RT) and MT would be the shorter for elite athletes compared to novices. We collected data on 13 elite and 10 novice athletes when performing a roundhouse kick. The experiment included EMG electrodes placed on five low back and lower extremity muscles and an electrogoniometer placed on the kicking knee. We found that pre-motor time was shorter and the RT was longer for elite athletes than novice athletes. Moreover, the integrated EMG of the main knee extensor does not differ between groups though other leg and trunk muscles do. The results allow coaches and teachers to understand this particular taekwondo kicking movement which could ultimately improve the technique in order to establish training and teaching goals. 相似文献
39.
The practice of integrated education for pupils with special needs has been attempted nationally in Portugal. This has prompted the development of area support teams across the country. Whilst this is a positive move, it has created a pressure for specialist training of teachers. This demand is yet to be fulfilled; an example of an inservice course is outlined in this report. 相似文献
40.
João Viegas Fernandes 《British Journal of Sociology of Education》1988,9(2):169-180
The aim of this article is to articulate the theory of resistance with the theories of social and cultural reproduction, within the boundaries of the new sociology of education. Starting from the concepts of classification and framing developed by Basil Bernstein and of Pierre Bourdieu's social camp, the author defines some concepts which, in his opinion, are basic to establish the theory of resistance with conceptual rigour and analytical capacity. It will thus be possible to constitute a referential theoretical matrix for the development of counter‐hegemonic curricula, teaching materials and pedagogical practices, whose objective is to oppose the schools’ social and cultural reproduction in its different forms (of class, race, ethnic groups and gender), at its two levels—the reproduction of the sexual and social division of labour and of the inculcation of the dominant ideologies. 相似文献