TY - JOUR A1 - Gimbel, Katharina A1 - Ziepprecht, Kathrin A1 - Mayer, Jürgen T1 - Überzeugungen angehender Lehrkräfte fachspezifisch und inhaltsspezifisch operationalisieren und erfassen JF - Kohärenz in der universitären Lehrerbildung Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-418614 SN - 978-3-86956-438-8 SP - 179 EP - 198 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Meier, Monique A1 - Grospietsch, Finja A1 - Mayer, Jürgen T1 - Vernetzung von Wissensfacetten professioneller Handlungskompetenz in hochschuldidaktischen Lehr-Lernsettings JF - Kohärenz in der universitären Lehrerbildung Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-418558 SN - 978-3-86956-438-8 SP - 143 EP - 178 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - BOOK A1 - Marquardt-Mau, Brunhilde A1 - Mayer, Jürgen A1 - Mikelskis, Helmut T1 - Umwelt : Lexikon ökologisches Grundwissen Y1 - 1993 SN - 3-499-16337-3 VL - 6337 PB - Rowohlt CY - Reinbek bei Hamburg ER - TY - BOOK A1 - Marquardt-Mau, Brunhilde A1 - Mayer, Jürgen A1 - Mikelskis, Helmut T1 - Umwelt : Lexikon der Grundbegriffe ; ökologisches Grundwissen ; für Windows Y1 - 1995 SN - 3-634-22123-2 PB - Systhema; Systhema-Verl. CY - München ER - TY - JOUR A1 - Mayer, Frank A1 - Scharhag-Rosenberger, Friederike A1 - Carlsohn, Anja A1 - Cassel, Michael A1 - Müller, Steffen A1 - Scharhag, Jürgen T1 - The intensity and effects of strength training in the elderly JF - Deutsches Ärzteblatt international : a weekly online journal of clinical medicine and public health N2 - Background: The elderly need strength training more and more as they grow older to stay mobile for their everyday activities. The goal of training is to reduce the loss of muscle mass and the resulting loss of motor function. The dose-response relationship of training intensity to training effect has not yet been fully elucidated. Methods: PubMed was selectively searched for articles that appeared in the past 5 years about the effects and dose-response relationship of strength training in the elderly. Results: Strength training in the elderly (> 60 years) increases muscle strength by increasing muscle mass, and by improving the recruitment of motor units, and increasing their firing rate. Muscle mass can be increased through training at an intensity corresponding to 60% to 85% of the individual maximum voluntary strength. Improving the rate of force development requires training at a higher intensity (above 85%), in the elderly just as in younger persons. It is now recommended that healthy old people should train 3 or 4 times weekly for the best results; persons with poor performance at the outset can achieve improvement even with less frequent training. Side effects are rare. Conclusion: Progressive strength training in the elderly is efficient, even with higher intensities, to reduce sarcopenia, and to retain motor function. Y1 - 2011 U6 - https://doi.org/10.3238/arztebl.2011.0359 SN - 1866-0452 VL - 108 IS - 21 SP - 359 EP - U30 PB - Dt. Ärzte-Verl. CY - Cologne ER - TY - BOOK A1 - Battaglia Mayer, Alexandra A1 - Schmidt, Hans-Jürgen T1 - The de Sitter space-time as attractor solution in eighth order gravity T3 - Preprint / Universität Potsdam, Fachbereich Mathematik Y1 - 1993 VL - 1993, 05 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Casse, Olivier A1 - Shkilnyy, Andriy A1 - Linders, Jürgen A1 - Mayer, Christian A1 - Häussinger, Daniel A1 - Völkel, Antje A1 - Thünemann, Andreas F. A1 - Dimova, Rumiana A1 - Cölfen, Helmut A1 - Meier, Wolfgang P. A1 - Schlaad, Helmut A1 - Taubert, Andreas T1 - Solution behavior of double-hydrophilic block copolymers in dilute aqueous solution JF - Macromolecules : a publication of the American Chemical Society N2 - The self-assembly of double-hydrophilic poly(ethylene oxide)-poly(2-methyl-2-oxazoline) diblock copolymers in water has been studied. Isothermal titration calorimetry, small-angle X-ray scattering, and analytical ultracentrifugation suggest that only single polymer chains are present in solution. In contrast, light scattering and transmission electron microscopy detect aggregates with radii of ca. 100 nm. Pulsed field gradient NMR spectroscopy confirms the presence of aggregates, although only 2% of the polymer chains undergo aggregation. Water uptake experiments indicate differences in the hydrophilicity of the two blocks, which is believed to be the origin of the unexpected aggregation behavior (in accordance with an earlier study by Ke et al. [Macromolecules 2009, 42, 5339-5344]). The data therefore suggest that even in double-hydrophilic block copolymers, differences in hydrophilicity are sufficient to drive polymer aggregation, a phenomenon that has largely been overlooked or ignored so far. Y1 - 2012 U6 - https://doi.org/10.1021/ma300621g SN - 0024-9297 VL - 45 IS - 11 SP - 4772 EP - 4777 PB - American Chemical Society CY - Washington ER - TY - CHAP A1 - Scharhag-Rosenberger, Friederike A1 - Carlsohn, Anja A1 - Schüler, Stefan A1 - Lundby, Carsten A1 - Mayer, Frank A1 - Scharhag, Jürgen T1 - Physiological changes over four maximal incremental cycling tests within one day T2 - Medicine and science in sports and exercise : official journal of the American College of Sports Medicine Y1 - 2012 SN - 0195-9131 VL - 44 SP - 933 EP - 934 PB - Lippincott Williams & Wilkins CY - Philadelphia ER - TY - BOOK A1 - Kurths, Jürgen A1 - Mayer-Kress, Gottfried ED - Kantz, Holger T1 - Nonlinear analysis of physiological data Y1 - 1998 SN - 3-540-63481-9 PB - Springer CY - Berlin, New York ER - TY - JOUR A1 - Mayer, Frank A1 - Bonaventura, Klaus A1 - Cassel, Michael A1 - Müller, Steffen A1 - Weber, Josefine A1 - Scharhag-Rosenberger, Friederike A1 - Carlsohn, Anja A1 - Baur, Heiner A1 - Scharhag, Jürgen T1 - Medical results of preparticipation examination in adolescent athletes JF - British journal of sports medicine : the journal of sport and exercise medicine N2 - Background Preparticipation examinations (PPE) are frequently used to evaluate eligibility for competitive sports in adolescent athletes. Nevertheless, the effectiveness of these examinations is under debate since costs are high and its validity is discussed controversial. Purpose To analyse medical findings and consequences in adolescent athletes prior to admission to a sports school. Methods In 733 adolescent athletes (318 girls, 415 boys, age 12.3+/-0.4, 16 sports disciplines), history and clinical examination (musculoskeletal, cardiovascular, general medicine) was performed to evaluate eligibility. PPE was completed by determination of blood parameters, ECG at rest and during ergometry, echocardiography and x-rays and ultrasonography if indicated. Eligibility was either approved or rated with restriction. Recommendations for therapy and/or prevention were given to the athletes and their parents. Results Historical (h) and clinical (c) findings (eg, pain, verified pathologies) were more frequent regarding the musculoskeletal system (h: 120, 16.4%; c: 247, 33.7%) compared to cardiovascular (h: 9, 1.2%; c: 23, 3.1%) or general medicine findings (h: 116, 15.8%; c: 71, 9.7%). ECG at rest was moderately abnormal in 46 (6.3%) and severely abnormal in 25 athletes (3.4%). Exercise ECG was suspicious in 25 athletes (3.4%). Relevant echocardiographic abnormalities were found in 17 athletes (2.3%). In 52 of 358 cases (14.5%), x-rays led to diagnosis (eg, Spondylolisthesis). Eligibility was temporarily restricted in 41 athletes (5.6%). Three athletes (0.4%) had to be excluded from competitive sports. Therapy (eg, physiotherapy, medication) and/or prevention (sensorimotor training, vaccination) recommendations were deduced due to musculoskeletal (t:n = 76,10.3%; p:n = 71,9.8%) and general medicine findings (t:n = 80, 10.9%; p:n = 104, 14.1%). Conclusion Eligibility for competitive sports is restricted in only 5.5% of adolescent athletes at age 12. Eligibility refusals are rare. However, recommendations for therapy and prevention are frequent, mainly regarding the musculoskeletal system. In spite of time and cost consumption, adolescent preparticipation before entering a career in high-performance sports is supported. Y1 - 2012 U6 - https://doi.org/10.1136/bjsports-2011-090966 SN - 0306-3674 VL - 46 IS - 7 SP - 524 EP - 530 PB - BMJ Publ. Group CY - London ER -