排序方式： 共有10条查询结果，搜索用时 15 毫秒
1
1.
Ferenc Torma Zoltan Gombos Marcell Fridvalszki Gergely Langmar Zsofia Tarcza Bela Merkely Hisashi Naito Noriko Ichinoseki-Sekine Masaki Takeda Zsolt Murlasits Peter Osvath Zsolt Radak 《运动与健康科学(英文)》2021,10(4):470
BackgroudBlood flow restriction (BFR) with low-intensity resistance training has been shown to result in hypertrophy of skeletal muscle. In this study, we tested the hypothesis that BFR during the rest periods between acute, high-intensity resistance exercise sessions (70% of 1 repetition maximum, 7 sets with 10 repetitions) enhances the effects of the resistance training.MethodsA total of 7 healthy young men performed squats, and between sets BFR was carried out on one leg while the other leg served as a control. Because BFR was applied during rest periods, even severe occlusion pressure (approximately 230 mmHg), which almost completely blocked blood flow, was well-tolerated by the participants. Five muscle-specific microRNAs were measured from the biopsy samples, which were taken 2 h after the acute training.ResultsDoppler data showed that the pattern of blood flow recovery changed significantly between the first and last BFR. microRNA-206 levels significantly decreased in the BFR leg compared to the control. The mRNA levels of RAC-β serine/threonine-protein kinase v22, nuclear respiratory factor 1, vascular endothelial growth factor, lupus Ku autoantigen protein p70 genes (p < 0.05), and paired box 7 (p < 0.01) increased in the BFR leg. The protein levels of paired box 7, nuclear respiratory factor 1, and peroxisome proliferator-activated receptor γ coactivator 1α did not differ between the BFR leg and the control leg.ConclusionBFR, during the rest periods of high-load resistance training, could lead to mRNA elevation of those proteins that regulate angiogenesis, mitochondrial biogenesis, and muscle hypertrophy and repair. However, BFR also can cause DNA damage, judging from the increase in mRNA levels of lupus Ku autoantigen protein p70. 相似文献
2.
Mariana Rodrigues Rita Queiroga Ana Bela Ribeiro Natália Alves Tiago Neves 《International Journal of Lifelong Education》2020,39(1):61-74
ABSTRACT Precarious jobs and unemployment have become common issues for many young adults due to the unfavourable labour market situation in Portugal. Against this background, lifelong learning (LLL) policies have been called in to play a role in creating economic growth and supporting the social inclusion of young adults in vulnerable educational and economic circumstances. These policies are defined at the national level; however, their implementation depends on the action of local actors who face specific challenges. This paper explores disparities in the definition and implementation of LLL policies targeting young adults in two Portuguese regions. Specifically, we analyse professional courses in Vale do Ave (North) and adult education and training courses in Alentejo Litoral (South). These regions were selected due to their dissimilar economic structure. This study adopted a qualitative approach through interviews with LLL experts and policy roundtables with local stakeholders and decision-makers in both regions. Data were transcribed and analysed using NVivo 10. The study shows that the two regions have different cooperation networks between local stakeholders, and that these impact the opportunities to influence the regional skills formation system differently. Also, the study shows that LLL policies are not designed to address destandardised life courses. 相似文献
3.
Youth-movements in Israel are non-formal organizations that educate for social and political involvement and provide a broad platform for youth involvement in the community. This study explored the question: does the social activism of adolescents who both elect for membership in youth movements and a leadership role of instructing younger members also reflect itself in environmentalism? In a survey of 1496 young instructors drawn from 15 official youth movements, findings on environmental literacy variables show youth are only generally knowledgeable about environmental problems; express ‘technical-optimism’ which leads them to limited concern for the environment; show limited recognition of the importance of environmental education, and show limited acknowledgment of the necessity for changes in personal consumerism. Findings also show that environmental issues are not on their mind since they are not a conversation topic with peers or family. Nonetheless, these youth also demonstrate strong self-efficacy to effect change; view themselves as role models for younger members; and express willingness to include environmentally-supportive activities within regular youth movement activities. Their valuing of nature also provides a foundation for building other environmental values. Further analysis shows how these findings can contribute theoretical and practical tools for incorporating sustainability within the youth movement framework, and help realize their potential for promoting sustainability in society. 相似文献
4.
Bela Gold 《Research Policy》1973,2(2):128-143
This paper explores the factors underlying the fluctuating support given to research and technological innovation in most firms. These include the general value basis for major decisions when authoritative information is inadequate; managerial conceptions of the role of technological innovations in promoting company objectives; managerial preferences among alternative approaches to advancing technology; and managerial methods of evaluating innovational efforts and results. 相似文献
5.
AbstractIn Israel, youth movements (YMs) comprise a main agent for nonformal education of youth and a youth-engagement framework in which civic engagement can be expanded to address environmental challenges. A major source of sociocultural diversity among YMs is their religious identity, based on the categorizations of secular, religious, and ultraorthodox. We compared, among these groups, the environmental literacy (EL) characteristics of “young-guides” and YM-leaders’ perspectives of sustainability in relation to their YM. Differences among groups were found in the young-guides’ EL: members of secular YMs demonstrated greater EL and openness to including pro-environmental activities within their YM. “Judaism as a platform for addressing sustainability” emerged as a major theme from leaders’ interviews. Implications for meaningful incorporation of sustainability and EE within the groups are discussed. 相似文献
6.
The adequate preparation of teacher education students in environmental education is a prerequisite for their future ability to design and implement effective environmental education. This longitudinal study compared the environmental literacy of 214 students at the onset and towards the end of their studies, in three academic colleges of education in Israel. A questionnaire and a paired pre‐test–post‐test design were used to explore environmental literacy variables and their perceptions regarding the contribution of their college studies to their environmental literacy and worldviews. Students towards the end of their studies reported increased involvement in most of the study’s environmental behaviour categories as compared to the beginning. Despite this, the pattern characterizing their environmental behaviour did not change: a negative relationship was found between the frequency at which they engaged in different behaviour categories and the environmental‐commitment‐level of the corresponding category. Overall, while their environmental attitudes were positive, both as beginning and advanced students, their level of environmental knowledge remained low. Advanced students noted the limited contribution of their studies to the development of their environmental literacy and worldviews. In spite of the improvement in students’ environmental literacy over the course of their studies, the levels of their environmental literacy towards the end of studies are still inadequate for educators. The findings from this study are of relevance to decision makers bringing environmental education into the policy of teacher education institutions, and for program developers, on effective directions for integrating environmental education given the structures and frameworks of current programs. 相似文献
7.
Bela Goyal Sudip Kumar Datta Altaf A. Mir Saidaiah Ikkurthi Rajendra Prasad Arnab Pal 《Indian journal of clinical biochemistry : IJCB》2016,31(2):224-230
The estimation of electrolytes like sodium (Na+), potassium (K+) and chloride (Cl−) using direct and indirect ion-selective electrodes (ISE) is a routine laboratory practice. Interferents like proteins, triglycerides, drugs etc. are known to affect the results. The present study was designed to look into the effect of increasing glucose concentrations on estimation of Na+, K+ and Cl− by direct and indirect ISE. Pooled sera was mixed with glucose stock solution (20 g/dL) prepared in normal saline to obtain glucose concentrations ranging from ~100 to ~5000 mg/dL. Na+, K+ and Cl− levels were estimated by direct and indirect ISE analyzers and results were statistically analysed using ANOVA and Pearson’s correlation. Similar experiment was also performed in 24 h urine sample from healthy subjects. Significant difference was observed between Na+ and Cl− measurements by direct and indirect ISE, with indirect ISE values being consistently higher than direct ISE. Besides this, significant difference was observed amongst Na+ and Cl− values from baseline values obtained by indirect ISE at glucose concentrations ≥2486 mg/dL. However, no such difference was observed with direct ISE. Na+ and Cl− estimation by indirect ISE showed significant negative correlation with glucose concentration, more so, above ~2000 mg/dL. K+, however, showed no significant difference with varying glucose. Similar results were observed in 24 h urine samples with a significant difference observed amongst Na+ and Cl− values at ≥2104 mg/dL glucose. Thus we conclude that high glucose concentrations interfere significantly in estimation of Na+ and Cl− by indirect ISE in serum as well as urine.
Electronic supplementary material
The online version of this article (doi:10.1007/s12291-015-0522-0) contains supplementary material, which is available to authorized users. 相似文献8.
Bela Arora 《British Journal of Sociology of Education》2015,36(4):635-648
The economic downturn has caused governments to reassess levels of resilience and adaptability in the face of new challenges. There has been increased focus on the higher education sector, which has been blamed for developing graduates whose skills do not meet the needs of the economy. The author explores a framework to interpret and understand contemporary policy and practice relating to the employability agenda in UK higher education. The article reflects upon power dynamics driving the creation of more entrenched business-facing universities through the development of the employability agenda and draws upon the work of Antonio Gramsci to provide a theoretical foundation for exploration of the agenda and its rise to prominence. The agenda has, arguably, emerged as an organising principle, which has been framed as common sense. 相似文献
9.
The environment is not only an ecological entity distinct from people but a cultural, social, and political construct. Understanding how learners conceptualize ‘environment’ may contribute to more effective environmental education (EE). This study investigated, in a paired pre–post design, 215 students’ understandings of ‘environment’ and perceptions of its relevance to their teaching area, at the onset and toward the end of their studies in teacher-education colleges in Israel. While student teachers, regardless of their major, acknowledged the importance of EE to their future function as teachers, they do not demonstrate an adequate understanding of the concept environment: humans are not viewed as part of the environment nor is the environment understood as a complex web of interactions among people, man-made systems and natural ecosystems. The fact that toward the end of studies, student teachers’ understandings of environment remained essentially basic indicates the necessity to reorient teacher-education programs toward EE. The various ways in which students perceived the relevance of environment to their teaching area are the starting points for this change. 相似文献
10.
Bela H. Banathy 《Performance Improvement Quarterly》1997,10(1):249-264
There is a growing realization that many of our social systems and organizations are out-of-sync with the new realities of the recently emerged post-industrial, information/knowledge age. These new realities are touching the lives of every individual, every family and community, the host of organizations of our public and private sectors, and our overall society. They affect the future of humanity as a whole. Questions arise. What are these new realities? What are the meanings of societal transformations? What is our role in facing the massive changes that confront us today? Are we only spectators of these changes? Are we their victims? Are we at the mercy of others who control these changes and the experts who design systems for us? Or is it up to us to shape our future and create and recreate the systems to which we belong? What kind of capacities and capabilities should we develop that will allow us to design our own lives, shape our systems, and give direction to the evolution of our communities, our organizations, and our society? I have struggled and worked with these questions over the last three decades. They have been the focus of my research and teaching. I explore these questions in this paper in order to define an approach—the systems design approach—by which we can individually and collectively create a better future for ourselves, our families, our communities and our society while enhancing human performance, adding value to our organizations, and most importantly, creating just and ethical systems for future generations. 相似文献
1