Auswirkungen von körperlicher Aktivität auf demenzielle Erkrankungen

There is evidence for a positive influence of physical activity on dementia. However, the study design and data processing of current studies on physical activity in patients with dementia are heterogeneous, which makes it difficult to evaluate and compare their results. In our review, we categorized the studies based on different aspects of the training interventions and discussed these aspects in detail. Based on the existing literature, the length of an ideal training program is at least 16 weeks with two to three training sessions per week and qualified supervision and instruction. The workout program should contain at least two of the three components strength, endurance and balance. These recommendations should be confirmed in future studies with comparable study designs and homogeneous patient groups.     

JEWISH EDUCATION IN EXTREMIS: A PROLEGOMENON TO POSTMODERN JEWISH EDUCATIONAL THOUGHT

Abstract In this article the author argues that for 150 years Jewish education has negotiated the tensions between modernity and Judaism by means of liberal religion, ultra Orthodoxy, and secular Zionism. All three are in crisis today due to the rise of postmodernism. Jewish educational thought therefore needs to create new syntheses between Jewish and postmodern life. To this end the concepts of Aliyah, modernity, and exile should be reevaluated and Jewish education should embrace the goal of working with God toward redemption. For more than 150 years Jewish education has focused on the tensions between rabbinic Judaism and modernity. Each of the models for negotiating these tensions-religious liberalism, ultra orthodoxy, and secular Zionism-succeeded beyond the imaginations of those who conceived them. Yet, each is in a state of crisis today, resulting from a deconstruction of both the rabbinic and modern assumptions upon which they are based. Addressing these crises requires reevaluation of key assumptions about the educational significance of Israel, modernity, and exile in order to lay the groundwork for more productive interactions between the Jewish people and its heritage on the one hand and the postmodern condition into which we are emerging on the other.     

Why ‘the uplift of the Tibetan Plateau’ is a myth

The often-used phrase ‘the uplift of the Tibetan Plateau’ implies a flat-surfaced Tibet rose as a coherent entity, and that uplift was driven entirely by the collision and northward movement of India. Here, we argue that these are misconceptions derived in large part from simplistic geodynamic and climate modeling, as well as proxy misinterpretation. The growth of Tibet was a complex process involving mostly Mesozoic collisions of several Gondwanan terranes with Asia, thickening the crust and generating complex relief before the arrival of India. In this review, Earth system modeling, paleoaltimetry proxies and fossil finds contribute to a new synthetic view of the topographic evolution of Tibet. A notable feature overlooked in previous models of plateau formation was the persistence through much of the Cenozoic of a wide east–west orientated deep central valley, and the formation of a plateau occurred only in the late Neogene through compression and internal sedimentation.     

Beyond a learning society? It is all to be done again: Zambia and Zimbabwe

This article considers the ways in which educators and learning societies in Zambia and Zimbabwe have had to struggle to create independent, democratic and critical curricula in difficult circumstances over the last 50 years in the context of historical shifts in power, a declining British Empire and the re‐emergence of reactionary forces at a time when democracy is in retreat. It is argued that democratic learning societies depend on relationships with progressive social movements which most non‐governmental organizations (NGOs), and their allies in lifelong education, claiming to constitute civil society do not represent. In Zambia the labour movement and its educational programmes have had to contend with the brutal application of neo‐liberalism and imposed structural adjustment programmes. These latter were also imposed in Zimbabwe and in both countries resulted in the decimation of public education and health programmes, appalling human suffering and unemployment, all exacerbated the by the HIV/AIDS pandemic. The issues of land reform in Zimbabwe, its suspension from and quitting the Commonwealth, the demonization of President Mugabe, and the recent March 2005 election victory for Zanu‐PF are analysed. The courage and dedication of so many educators in both countries are overwhelming but the article concludes that the learning society, rich culture, knowledge base and intellectual potential may be in danger from poverty, unemployment, exploitation and disease.