RESUMO
A group of teachers from Northeast Brazil developed a model of membrane potentials and action potential and tested the hypothesis that using the peer-instruction model would provide a better performance for students in reading traditional texts and lectures. The results were obtained from 357 students from 20 different courses in 9 different undergraduate programs. All students attended two 100-min theoretical lecture and, at the end of the second lecture, were asked to answer a multiple-choice question (a pretest). In the following lecture, students were divided into three groups: control, text, and model. At the end of the lecture, everyone responded to a posttest. Student performance in the pretest did not differ significantly between groups. In the comparison between the pretest and the posttest, students in the model and text groups significantly improved their performance, but there was no improvement in the control group. In the posttest, the model group presented a better performance than the control group. In the evaluation of the strategies used, 46% of the students indicated that the text would be very useful to remind them about the subject in the future, whereas 80% of those who used the model indicated that it would be very useful or extremely useful. useful. Although it was not possible to support the hypothesis conclusively, the performance model group, at least in part, was due to the use of active methodologies that constitute a differential in the teaching-learning process.
Assuntos
Potenciais de Ação/fisiologia , Ocupações em Saúde/educação , Potenciais da Membrana/fisiologia , Modelos Biológicos , Grupo Associado , Ensino , Avaliação Educacional/métodos , Feminino , Humanos , Masculino , Estudantes de Ciências da Saúde , Adulto JovemRESUMO
Este artigo determina a prevalência e o perfil dos usuários de Esteroides Anabólicos Androgênicos (EAAs) e Suplementos Alimentares (SAs) da cidade de João Pessoa, Paraíba (PB). Os dados foram coletados por questionário estruturado. Foram analisados 510 sujeitos (24,9±6,2 anos), sendo 79,4% (n=405) do sexo masculino. A prevalência de uso de EAAs e SAs foi de 20,6% (n=105) e 55,5% (n=283), respectivamente. Os usuários eram majoritariamente homens, jovens, com baixa escolaridade e que treinavam havia mais de quatro anos com frequência de cinco vezes por semana. Esses dados demonstram que há elevada prevalência de uso de EAAs e SAs por parte de praticantes de atividade física em academias na cidade analisada.
This article determines the prevalence and profile of users of Anabolic Androgenic Steroids (AAS) and Supplements (SA) in the city of João Pessoa, Paraíba. Data were collected by structured questionnaire. 510 subjects (24.9±6.2 years) were analyzed, among those 79.4% (n=405) where male. The prevalence of use of AAS and SA was 20.6% (n=105) and 54.7% (n=279), respectively. The users were mostly young males, with low education and over four years of training, with an attendance of five times per week. These data demonstrate that there is a high prevalence of use of AAS and SA among the practitioners of physical activity at gyms in João Pessoa.
En este artículo se determina la prevalencia y el perfil de los usuarios de Esteroides Anabólicos Androgénicos (EAA) y Suplementos Alimenticios (SA) de la ciudad de João Pessoa, Paraíba. Los dados fueron colectados por cuestionario estructurado. Fueron analizados 510 sujetos (24,9±6,2 años), de estos, 79,4% (n=405) son varones. La prevalencia de uso de EAA y SA fué de 20,6% (n=105) y 54,7% (n=279), respectivamente. Los usuarios eran, en su mayoria, hombres, jovenes, con baja escolaridad y que entrenavan hace más de 4 años, con asiduidad de 5 veces por semana. Se concluye que hay una alta prevalencia de uso de EAA y SA por parte de practicantes de actividad física de gimnasios.
RESUMO
This cross-sectional, quantitative, exploratory study investigated the prevalence and profile of anabolic-androgenic steroids (AAS) users amongst a convenience sample of 510 bodybuilders from 52 gyms, in João Pessoa, Brazil, with a structured questionnaire containing selected questions about socioeconomic and training variables on the use of AAS. Data were analyzed using frequency and chi-square tests. AAS prevalence use was 20.6%; mostly young men (98.1%), of a low education level (46.7%), who trained for more than 4 years (49.5%). The use of AAS was related to the use of dietary supplements. About 81% of consumed AAS consisted of Deca-Durabolin, Winstrol, and Sustanon. Study's limitations are noted.
