排序方式： 共有28条查询结果，搜索用时 91 毫秒
1.
2.
Bruna C. Turi-Lynch Henrique Luiz Monteiro Rômulo Araújo Fernandes Xuemei Sui Ítalo Ribeiro Lemes Jamile Sanches Codogno 《Journal of sports sciences》2019,37(13):1443-1448
Objective: To analyze the possible dose-response association between components of sports participation (intensity, volume and previous engagement) and 4-year mortality rates among Brazilian adults.
Methods: 679 males and females (mean age among men = 66.7 ± 9.3 years old and mean age among women = 64.8 ± 8.9 years old) composed the study sample. Sports participation was assessed using Baecke’s questionnaire, which considers intensity, duration and previous engagement. Medical records were used to identify the cause of the death. Cox regression analysis was performed to determine the independent associations of exercise components and mortality.
Results: Participants that reported exercising at moderate-vigorous intensity (Moderate/vigorous: 4.1% versus None/light: 10.3% [p-value = 0.012]; HR = 0.42 [0.1 to 0.94)] and for more than four months (≥4 months: 5.3% versus <4 months: 10.2% [p-value = 0.038]; HR = 0.47 [0.24 to 0.94]) had lower mortality risk. The percentage of survival according to all-cause mortality was significantly higher for participants engaged in sports at moderate-vigorous intensity (p-value = 0.014), as well as for those engaged in sports for periods superior than four months (p-value = 0.036).
Conclusion: We found higher percentage of survival among adults engaged in sports at moderate-vigorous intensity and with at least four months of previous engagement. 相似文献
3.
4.
Emily Worthington Susan Maude Kere Hughes Gayle Luze Carla Peterson Mary Jane Brotherson Katherine Bruna Molly Luchtel 《Early Childhood Education Journal》2011,39(1):51-60
The dramatic growth in the number of children learning English as a second language in our country has led to a corresponding
increase in the need to understand how teachers and schools can effectively teach children who are learning English as a second
language. Many teachers report not feeling prepared to meet the needs of these children (National Center for Education Statistics,
Teacher preparation and professional development: 2000. , 2002). The current study used focus group interviews to examine how Head Start teachers in one program addressed the special learning
needs of children learning English in their classrooms. Key challenges involved communicating with children and their families
in their home language. Teachers used other staff, parents, and children in the classroom to interpret. Strategies involved
visual aids, pictures, gestures, and a welcoming classroom environment. Resources used by teachers were professional development
and language skills of other staff. However, available resources were often underutilized and limited for teachers to use
in meeting the challenges the teachers faced in the classroom. Suggestions are presented for overcoming the challenges and
limited resources encountered by teachers, such as changes in preservice and inservice training opportunities, and second
language learning opportunities for teachers. Further implications for training and research are discussed. 相似文献
5.
6.
7.
ObjectiveTo determine the prevalence of children and youth exposure to sexual content and inappropriate sexual questions on the Internet; and to identify emotional and behavioral reactions of children after such exposures.MethodsSample of the study included 2,880 of children and youth aged 10–16 who identified themselves as Internet users. Participants were questioned using Questionnaire on Child Experiences in Internet Use.ResultsResults show that 27% of children were exposed to messages of sexual content, mostly containing images of human nudity and sexual activity. Study also shows that children have experienced inappropriate sexual questions on the Internet. Exposure to questions of intimate nature increased with their age with certain differences in exposure and disturbing emotional reactions related to gender and age.ConclusionResults obtained by this study show that about a quarter of children are at risk for exposure to sexual content on the Internet.Practical implicationsResearch results can be used as a starting point for further research in order to throw more light on children and youth exposure to sexual content on the Internet. Furthermore, results can be used in developing prevention strategies for high-risk behavior of children and youth using the Internet and in working with children, parents and teachers. 相似文献
8.
Elisabete dos Santos Freire Bruna Gabriela Marques Maria Luiza de Jesus Miranda 《Sport, Education and Society》2018,23(5):449-461
The contribution of Physical Education (PE) and School Sport to learning of values has been identified by teachers and researchers. However, we know little about how that teaching takes place during classes. This study aimed to understand the perceptions of teachers on teaching values in their classes and to analyse the conception of values that have guided their professional intervention. To do this, a qualitative study was conducted with a sample of three teachers, using class observations and interviews with the teachers as research tools. For all these teachers, teaching values is a central goal of PE classes; for two of the teachers, it is the main goal. Because of this conviction, their pedagogies prioritize the teaching of moral values over others that can be taught in PE. A belief in the possibility of teaching values in the classroom is part of the habitus of the PE teacher; it can sometimes be characterized as an illusio. For these reasons, teachers can set unrealistic expectations, disregarding their own limitations as well as the conflicts and complexity involved in the construction of value systems. 相似文献
9.
Kyle R. Lynch Han C. G. Kemper Bruna Turi-Lynch Ricardo R. Agostinete Igor H. Ito Rafael Luiz-De-Marco 《Journal of sports sciences》2017,35(24):2421-2426
The objective of the present study was to investigate the effects of different sports on stress fractures among adolescents during a 9-month follow-up period. The sample was composed of 184 adolescents divided into three groups (impact sports [n = 102]; swimming [n = 35]; non-sports [n = 47]). The occurrence of stress fracture was reported by participants and coaches. As potential confounders we considered age, sex, resistance training, body composition variables and age at peak of height velocity. There were 13 adolescents who reported fractures during the 9-month period. Bone mineral density values were higher in adolescents engaged in impact sports (P-value = 0.002). Independently of confounders, the risk of stress fracture was lower in adolescents engaged in impact sports than in non-active adolescents (hazard ratio [HR] = 0.23 [95% confidence interval (CI) = 0.05 to 0.98]), while swimming practice was not associated to lower risk of fracture (HR = 0.49 [95% CI = 0.09 to 2.55]). In conclusion, the findings from this study indicate the importance of sports participation among adolescents in the reduction of stress fracture risk, especially with impact sports. More importantly, these results could be relevant for recognising adolescents in danger of not reaching their potential for peak bone mass and later an increased risk of fractures. 相似文献
10.