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Placido de Castro, Brazil

Elsangedy H.M.,Potiguar University | Krause M.P.,Federal University of Parana | Krinski K.,Federal University of Parana | Alves R.C.,Federal University of Parana | And 2 more authors.
Journal of Strength and Conditioning Research

The purpose of this study was to verify the self-selected intensity during resistance training (RT) in older women. Twenty healthy women (mean age, 65.6 years) underwent a 2-week familiarization period followed by 3 experimental sessions. During the first session, anthropometric measurements were taken. The second session involved completion of a 1 repetition maximum (1RM) test for the following exercises: chest press, leg press, lat pull-down, leg extension, lateral shoulder raise, leg curl, biceps curl, and triceps pushdown. Last, a single RT session was performed at a self-selected intensity. During the RT session, participants were instructed to self-select a load for performing 3 sets of 10-15 repetitions. Data were analyzed by mean (SD) and analysis of variance with repeated measures (p < 0.05). Global mean of the 3 sets was bench press 41.0% 1RM (11.9), leg press 43.0% 1RM (17.2), lat pull-down 47.2% 1RM (11.1), leg extension 33.0% 1RM (8.1), lateral shoulder raise 51.1% 1RM (12.1), leg curl 43.5% 1RM (8.8), biceps curl 48.0% 1RM (15.5), and triceps pushdown 51.7% 1RM (13.3); there were no significant differences between the sets (p > 0.05). These results indicate that inactive older women self-selected an intensity exercise during RT below the recommendation for improvements on muscle fitness in apparently healthy older adults. However, this intensity is recommended for very deconditioned individuals. Nevertheless, the use of self-selection strategy during an exercise program can have greater advantages because of its easy applicability, its positive relation with exercise adherence, and for promoting initial muscle conditioning in older adults. Furthermore, it is crucial to gradually increase the RT load to guarantee better and sustainable effects on muscle fitness. Finally, future studies are needed to establish the chronic effects of RT at self-selected intensity on muscle fitness and the functional health of older adults. © 2013 National Strength and Conditioning Association. Source

Objective: To reflect on work processes in the primary care network of the SUS (Brazil's National Health System), focusing on the care practices in mental health. Methodology: Interviews with 12 workers of the Family Health Strategy: physicians, nurses and community health agents; participant observation of the daily routine of the Family Health Unit; home visits. Results: The work processes in health are bureaucratically and hierarchically organized and the care practices scrutinize users based on the knowledge/action of each professional category. The specialism logic is recurrent and the teams, in general, do not receive the users well, do not attend to the demands and end up referring users to other units. Conclusion: We believe that with a new work and management arrangement mode it is possible to interfere in the subjectivity and in the culture that prevails among the health workers, intensify the therapeutic bond and the intersection between knowledge and practices, and produce work processes that result in receptivity and responsibility for the user's life. Source

Da Costa Evangelista J.P.,Potiguar University | Gondim A.D.,Federal University of Rio Grande do Norte | Souza L.D.,State University of Rio Grande do Norte | Araujo A.S.,Federal University of Rio Grande do Norte
Renewable and Sustainable Energy Reviews

Alumina-supported potassium oxides are promising catalysts for the transesterification reaction of vegetable oils for biodiesel production. Various potassium compounds Al2O3-supported were prepared via impregnation method. Potassium oxide (K2O) is a good candidate for a solid base catalyst from an economical point of view. In the present work, we reviewed K2O catalyst for the vegetable oil transesterification based on a variety of related research papers. The potassium compounds supported in catalysts, KOH/Al2O3, KNO3/Al2O3, KI/Al2O3, KF/Al2O3 and K2CO3/Al2O3, were optimized through various reaction parameters, such as: amount of catalyst, molar ratio of oil to alcohol, reaction time and temperature. Yields and conversions from various catalytic systems applied for biodiesel production were also compared. Among the catalysts studied, the KF/Al2O3 showed higher catalytic activity and a small amount of catalyst requirement in the transesterification reaction, indicating that it can be applied as a potential catalyst in the industry. © 2016 Elsevier Ltd. Source

de Attayde Silva M.J.P.M.,Potiguar University | Dantas Florencio G.L.,Federal University of Rio Grande do Norte | Erbolato Gabiatti J.R.,University of Medical Sciences of Costa Rica | do Amaral R.L.,University of Campinas | And 2 more authors.
Brazilian Journal of Infectious Diseases

Objective: To evaluate the effect of Chlamydia trachomatis infection during pregnancy on perinatal morbidity and mortality. Methods: Systematic review and meta-analysis in an electronic database and manual, combining high sensitivity specific descriptors seeking to answer the research objective. The articles considered to be of high methodological quality (score above 6 on the Newcastle-Ottawa Scale) were assessed by meta-analysis. Results: Summary estimates of 12 studies were calculated by means of Mantel-Haenszel test with 95% confidence interval. It was observed that Chlamydia infection during pregnancy increased risk of preterm labor (relative risk (RR) = 1.35 [1.11, 1.63]), low birth weight (RR = 1.52 [1.24, 1.87]) and perinatal mortality (RR = 1.84 [1.15, 2.94]). No evidence of increased risk was associated with Chlamydia infection in regard to premature rupture of membranes (RR = 1.13 [0.95, 1.34]), abortion and postpartum endometritis (RR = 1.20 [0.65, 2.20] and 0.89 [0.49, 1.61] respectively). Conclusion: The diagnosis and treatment of Chlamydia cervicitis during pregnancy can reduce perinatal morbidity and mortality associated with this infection. However, clinical trials are needed to confirm these findings. © 2011 Elsevier Editora Ltda. Source

Jensen J.L.,Brigham Young University | Kummer T.A.,Brigham Young University | Godoy P.D.D.M.,Potiguar University
CBE Life Sciences Education

The “flipped classroom” is a learning model in which content attainment is shifted forward to outside of class, then followed by instructor-facilitated concept application activities in class. Current studies on the flipped model are limited. Our goal was to provide quantitative and controlled data about the effectiveness of this model. Using a quasi-experimental design, we compared an active nonflipped classroom with an active flipped classroom, both using the 5-E learning cycle, in an effort to vary only the role of the instructor and control for as many of the other potentially influential variables as possible. Results showed that both low-level and deep conceptual learning were equivalent between the conditions. Attitudinal data revealed equal student satisfaction with the course. Interestingly, both treatments ranked their contact time with the instructor as more influential to their learning than what they did at home. We conclude that the flipped classroom does not result in higher learning gains or better attitudes compared with the nonflipped classroom when both utilize an active-learning, constructivist approach and propose that learning gains in either condition are most likely a result of the active-learning style of instruction rather than the order in which the instructor participated in the learning process. © 2015, American Society for Cell Biology. All rights reserved. Source

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