Effects of blood flow restriction without additional exercise on strength reductions and muscular atrophy following immobilization:A systematic review     

Mikhail Santos Cerqueira  Jose Diego Sales Do Nascimento  Daniel Germano Maciel  Jean Artur Mendonca Barboza  Wouber Herickson De Brito Vieira 《运动与健康科学(英文)》2020,9(2):152-159

Purpose:To investigate whether blood flow restriction(BFR) without concomitant exercise mitigated strength reduction and atrophy of thigh muscles in subjects under immobilization for lower limbs.Methods:The following databases were searched:PubMed,CINAHL,PEDro,Web of Science,Central,and Scopus.Results:The search identified 3 eligible studies,and the total sample in the identified studies consisted of 38 participants.Isokinetic and isometric torque of the knee flexors and extensors was examined in 2 studies.Cross-sectional area of thigh muscles was evaluated in 1 study,and thigh girth was measured in 2 studies.The BFR protocol was 5 sets of 5 min of occlusion and 3 min of free flow,twice daily for approximately 2 weeks.As a whole,the included studies indicate that BFR without exercise is able to minimize strength reduction and muscular atrophy after immobilization.It is crucial to emphasize,however,that the included studies showed a high risk of bias,especially regarding allocation concealment,blinding of outcome assessment,intention-to-treat analyses,and group similarity at baseline.Conclusion:Although potentially useful,the high risk of bias presented by original stodies limits the indication of BFR without concomitant exercise as an effective countermeasure against strength reduction and atrophy mediated by immobilization.  相似文献   

我国图情档学科关于文化信息数字资源整合的研究——以博物馆研究为视角     

王萌  龙乐思  朱嘉麒 《图书馆杂志》2020,(4):80-91

我国图情档学科认为博物馆是文化信息数字资源整合的主体之一。博物馆中以其展品为代表的文化信息资源对满足公众多样化的文化需求、增强中华文化竞争力起着重要作用。本文借助Citespace分析软件,通过对作者、机构、关键词可视化图谱的绘制,识别出我国图情档学科下以博物馆为主题词的科研文献成果概况、科研机构分布及研究热点词与其研究发展趋势。经分析得知,该学科下以博物馆为主题的研究可以分为两个阶段:第一阶段(1996-2008年)主要是博物馆文献资源的开发与利用、博物馆与图书馆文献资源的开发与利用、博物馆古籍保护管理工作以及古籍文献等主题。第二阶段(2009-2019年)主要探讨三馆馆际合作的资源整合路径、数字资源整合理论模式与合作机制等的研究,并结合相关文献内容,深入探讨以博物馆为主题的研究重点,基于此,我国图情档学科应以博物馆中丰富多样的文化信息资源为视角,开展涵盖档案馆、图书馆、博物馆的全种类、全范围的全文化信息数字资源整合。最后,本文围绕数字资源整合这一具有影响力的研究热点,探讨如何从图情档学科的角度出发,有效地涵盖博物馆,构建以图书馆、档案馆、博物馆三馆为主体的数字资源整合模式与机制,建立为公众文化精神需求服务的信息共享平台。  相似文献   

Fitness,physical activity and academic achievement in overweight/obese children     

Cristina Cadenas-Sanchez  Jairo H. Migueles  Irene Esteban-Cornejo  Jose Mora-Gonzalez  Pontus Henriksson  María Rodriguez-Ayllon 《Journal of sports sciences》2020,38(7):731-740

ABSTRACT

The aim of this study was to examine the associations of fitness and physical activity with academic achievement in children with overweight/obesity. A total of 106 (10.0 ± 1.1y, 61 boys) children participated. The fitness components were assessed by field and laboratory-based tests. Physical activity was measured via accelerometry. The academic achievement was assessed by a standardised test and school-grades. Field-based cardiorespiratory fitness was associated with language skills (ß-standardised- ranging from 0.281 to 0.365, p < 0.01). The field-based muscular strength was associated with grade point average, natural and social sciences, and foreign language (ß = 0.280–0.326, all p ≤ 0.01). Speed-agility was associated with some language-related skills (ß = 0.325–0.393, all p ≤ 0.01). The laboratory-based muscular strength also showed an association with mathematics skills (ß = 0.251–0.306, all p ≤ 0.01). Physical activity did not show significant association with academic achievement (p > 0.01). Overall, the significant associations observed for muscular strength and speed/agility were attenuated and disappeared in many cases after additional adjustments for body mass index and cardiorespiratory fitness, indicating that these associations are inter-dependent. Our study contributes by indicating that other fitness components apart from cardiorespiratory fitness, such as muscular strength and speed-agility, are positively associated with academic achievement. However, these associations appear to be dependent on body mass index and cardiorespiratory fitness.  相似文献   

Decoding multi-click search behavior based on marginal utility     

Hai-Tao?YuEmail author  Adam ?Jatowt  Roi?Blanco  Hideo?Joho  Joemon?M.?Jose 《Information Retrieval》2017,20(1):25-52

  相似文献   

Long-term effects of a mediated reading programme on the development of emotional competencies / Efectos a largo plazo de un programa de lectura mediada para el desarrollo de competencias emocionales     

Enrique Riquelme-Mella  Ignacio Montero García-Celay 《Cultura y Educación》2016,28(3):435-467

Emotional competencies are considered protective factors against behaviour problems and have been associated with adequate social and academic development. Early intervention means a greater chance of stability and development of these skills; however, few programmes address these aspects and evaluate their effectiveness in the short, middle or long term. Our research goal was to implement an early intervention programme for the development of emotional competencies based on the mediated reading of children’s literature and to evaluate its long-term effectiveness. Participants were 115 children between the ages of five and eight who were divided into two groups. To assess the impact of the programme, a factorial design was implemented with four independent variables. The ‘Mediated reading’ and ‘Traditional reading’ groups were compared on measures of facial emotion recognition, empathy and emotional regulation. Results indicate that the mediated reading group showed the best performance on all the dimensions evaluated, with significant differences from the traditional reading group. The study concludes by analysing the outcomes and limitations of the programme implemented.  相似文献   

On the Road to Graphicacy: The learning of graphical representation systems     

Yolanda Postigo  Juan Ignacio Pozo 《教育心理学》2004,24(5):623-644

This article examines the learning of different types of graphic information by subjects with different levels of education and knowledge of the content represented. Three levels of graphic information learning were distinguished (explicit, implicit, and conceptual information processing) and two experiments were conducted, looking at graph and geographical map learning. The graph study (Experiment 1) examined the influence of the variables' numerical relationship structure on adolescent students with different levels of education and knowledge of social sciences and also assessed their proportional reasoning skills. The map study (Experiment 2) looked at the learning of a geographical map studied spontaneously by secondary school and university students with different geographical knowledge (experts and novices) and also assessed their spatial skills. The results of both studies show that graph and map learning performance improves with the subjects' educational level. The groups' differential performance varied according to the type of information involved (explicit, implicit, or conceptual). The subjects' knowledge of the domain in question determined the level at which they processed the information. Verbal and superficial processing of graphic information were also found to predominate. This has important educational implications, suggesting the need for differential treatment in teaching different types of information. The results of the study also raise interesting issues regarding the type of expertise involved in learning graphic information: expertise related to the content represented, to knowledge of the syntax (graphicacy), and/or the system of knowledge graphically represented – spatial in the case of maps, numerical in the case of graphs.  相似文献   

Special education reform in Brazil: an historical analysis of educational policies     

Jose Armando Valente 《欧洲特需教育杂志》2013,28(1):10-28

ABSTRACT

This paper describes an histprical view of the legal and political aspects related to special education. It analyses the current and future perspectives that public and private educational institutions utilize to provide school services to individuals with disabilities in Brazil. Although Brazil has developed laws and provisions to guarantee the integration of students with disabilities into regular schools, this is not happening in most cases. In fact, Brazil does not yet have schools that consider the diversification of students’ capabilities as beneficial to the intellectual development of deficient and non‐deficient students. Poor teacher training and institutional conservatism constitute the obstacles to the implementation of innovation in this area. Most of the innovations seen today are the fruit of individual initiatives, such as the Project for Training Teachers to Integrate the Disabled into Schools (PROEDEM) and the Project for Using Computers in Special Education, that we describe. We believe that these new proposals will have a great impact on the education of students with deficiencies. This will raise the consciousness of educators and will help to transform the current conceptions and actions related to the education of people with disabilities, making possible the implementation of special education reforms.  相似文献   

Action research through lesson study for the reconstruction of teachers’ practical knowledge. A review of research at Málaga University (Spain)     

Encarnación Soto Gómez  María José Serván Núñez  Noemí Peña Trapero  Ángel Ignacio Pérez Gómez 《Educational Action Research》2019,27(4):527-542

ABSTRACT

This article aims to set out our discussions, reflections and research at Málaga University (Spain) in relation to Lesson Study (LS), as a cooperative action research process. The paper aims to summarise the main findings of ten years of research, addressing the concepts and dilemmas found both in forming teachers’ practical thinking and in the complex processes of reconstruction through LS. The results of our research provide evidence that it is a useful way to deal with the reconstruction of teachers’ practical knowledge in teacher training. Teachers’ practical knowledge should be more broadly seen as an active combination of theoretical knowledge, procedural knowledge and skills, attitudes, emotions, believes, and values: i.e. teachers’ practical thinking. Most of these personal and professional resources are unconscious, or rather sub-conscious. Changes in teachers’ practical thinking require more practical experience and reflexion: a dialectical process based around two key components: theorisation of practice and experimentation of reconstructed theory. The results of our research show that these dialectical process could be developed with LS as a particular way of developing AR, adding a complex, systematic, flexible and cooperative way of dealing with specific and contextual curricular innovation projects. We therefore conclude that LS could be a very useful path to follow in reconstructing teachers’ practical thinking from within, strengthening the professional teaching community.  相似文献   

Globalization,National Cultures and Ethics     

Ignacio Ramonet 《International Information and Library Review》2013,45(3-4):483-486

  相似文献   

How do students process complex formative feedback in question-answering tasks? A think-aloud study     

Máñez  Ignacio  Vidal-Abarca  Eduardo  Kendeou  Panayiota  Martínez  Tomás 《Metacognition and Learning》2019,14(1):65-87

Metacognition and Learning - The goal of this study was to examine how students process formative feedback that included corrective and elaborative information in online question-answering tasks....  相似文献