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Background: The contractile history of a muscle or a muscle group can result in an acute enhancement of subsequent muscle force output. This phenomenon is referred to as postactivation potentiation (PAP) and it was frequently substantiated in original research manuscripts, systematic literature reviews, and meta-analyses. However, there is a lack in the literature regarding precise dose-response relations. This literature review describes the main determinants of PAP effects and additionally presents the state of the art regarding the acute effects of PAP protocols on measures of strength, power, and speed in subelite and elite athletes of different sport disciplines. Furthermore, an attempt is made to demonstrate evidence-based information concerning the design of effective PAP protocols.
Methods: Our literature search included the electronic databases Pubmed, SportDiscus, and Google Scholar (1995 - March 2013). In total, 23 studies met the inclusionary criteria for review.
Results: Findings from our literature review indicate that various conditioning activities produce acute PAP effects in subelite and particularly elite athletes. More specifically, conditioning activities that are characterised by multiple sets, moderate to high intensities (60 - 84 % of the one repetition maximum), and rest intervals of 7 - 10 min. following the conditioning activity have the potential to induce short-term improvements in muscle force output and sports performance.
Conclusion: It is recommended that subelite and particularly elite athletes from strength, power, and speed disciplines apply specifically tailored conditioning activities during the acute preparation process for competition to induce performance enhancing PAP effects.
Background: Therapeutic climbing exercises are employed for the treatment of shoulder-and knee-joint injuries. However, there is a void in the literature regarding muscle activation levels during the performance of these exercises. Thus, the purpose of this study was to investigate differences in muscle activation during therapeutic climbing exercises depending on the degree of task difficulty.
Participants/Material and Methods: A sample of 10 healthy subjects (sex: 4 females, 6 males; age: 27 +/- 3 years; climbing experience: 5 +/- 3 years) performed three shoulder girdle (i.e., wide shoulder pull, narrow shoulder pull, shoulder row) and two leg extensor (i.e., ascending frontal, ascending sidewards) exercises. Electromyographic (EMG) data were recorded on the right side for eleven muscles and then normalised using the maximum voluntary contractions for each muscle.
Results: With increasing task difficulty, muscle activity in all but one muscle (i.e., m. trapezius ascendens) increased significantly for the three shoulder girdle exercises. For the two leg extensor exercises, an increase in task difficulty produced a tendency towards yet not significantly higher muscle activity.
Conclusion: Shoulder row was the most effective therapeutic climbing exercise in the ability to activate muscles while showing the highest EMG signals. The absence of significant differences in muscle activity between the two leg extensor exercises indicates their equivalent use for muscle activation during therapy.
Anglizismen im Deutschen
(2013)
Auf dem Weg zu einer regionalisierten Welt? Regionalismus als Element einer multipolaren Ordnung
(2013)
Autodidaxie
(2013)
Awards
(2013)
Bekenntnisse
(2013)
Chillen gestern
(2013)
Background: Chronic abdominal pain (CAP) in childhood is a commonly occurring condition and shows a high stability. Psychosocial dysfunctioning of children, such as increased stress experience, is a burden for children and parents and complicates clinical management. Additional comorbid disorders may develop. To minimize the onset of such disorders, treatment at an early stage and taking psychosocial aspects into consideration is strongly recommended. Through this approach, the cognitive-behavioral, child-centered group program 'Stop the pain with Happy-Pingu' was developed, applied, and subsequently evaluated. What is the psychosocial situation of the affected children? Can the cognitive-behavioral group program be applied to improve psychosocial limitations? Method: The cognitive-behavioral group program comprises 6 weekly sessions for children and 1 single meeting for parents. In a randomized controlled study, the program was evaluated with 29 children aged between 6 and 12 years. The evaluation was based on a comparison between the intervention group (IG) and the waiting list control group (WLC), measured at 3 measurement points: T1 (pre), T2 (post), and T3 (3-month follow-up). Results: Emotional problems in particular can emerge in children with CAP. The program was well received, with a high level of participation through to completion. The results demonstrate that children participating in the IG experience significant stress reduction and improved psychosocial functioning compared to children participating in the WLC. The effect sizes range from medium to high. Conclusions: Drawing upon the above findings, multimodal cognitive-behavioral techniques appear to be suitable to successfully treat children with CAP. However, further controlled studies are required to identify the specific elements of the training that are most effective in reducing pain.
The study investigates the effects of classroom composition (average ability, achievement, and socio-economic background, proportion of immigrant students) on the development in mathematics achievement, and reading literacy from grade 5 to 6. The study draws on a sample of N=1892 students in vocational track schools (Hauptschule) and intermediate track schools (Realschule) in Baden-Wuerttemberg, Germany. After controlling for school type, and between-school differences in student intake characteristics, none of the compositional characteristics showed a statistically significant effect on achievement development. School track was associated with the development of reading literacy even after controlling for individual differences; however, this relationship lost its statistical significance after the composition of the student body was additionally taken into account.
Coca Cola und "Coolitude"
(2013)
Cognitive flexibility in adolescent patients with unipolar affective disorders - gender differences
(2013)
Objective: Several studies have revealed impairments in cognitive functions among patients with affective disorders (AD). However, to date there are few neuropsychological studies on cognitive flexibility among adolescent patients with AD, especially on gender differences in AD. Here, we investigate cognitive functions, especially cognitive flexibility, in adolescent patients with unipolar AD (UAD) compared to a healthy control group (CG). Method: The study population consists of 17 male patients (M-age = 15.4 +/- 1.3) and 22 female patients with UAD (M-age = 15.6 +/- 1.4) as well as 20 male (M-age = 16.0 +/- 1.0) and 30 female (M-age = 15.7 +/- 0.9) healthy adolescents. A neuropsychological test battery was conducted, and depressive symptoms, psychological stress, and intelligence were also assessed. Results: The analyses revealed no significant group differences regarding cognitive flexibility or visual processing speed, albeit slight better performance in motor processing speed for the CG. Furthermore, no gender differences were observed regarding cognitive flexibility, though female subjects general displayed better performance in processing speed. Conclusions: Overall, there are no indications for serious deficits and specific gender differences in cognitive flexibility or processing speed in adolescent patients with UAD. Independent of psychological distress, female subjects seem to have some advantages in processing speed.
The consumption of media violence and aggressive behavior were assessed three times in a sample of N=1,052 German adolescents with and without migration background over a period of two years with 12-month intervals. The adolescents in the two groups, who were in grades 7 and 8 at T1, were matched by gender, age, type of school, and academic achievement. Students in the migrant group reported higher consumption of violent media. At T3, they showed more physical but less relational aggression than their peers of German background. Cross-lagged panel analyses showed parallel associations between media violence use and aggression in both groups: Media violence consumption at T1 and T2 predicted physical aggression at T2 and T3 independent of ethnic background. The reverse path from physical aggression to media violence consumption was nonsignificant. No link was found between media violence use and relational aggression over time.
Die Vorstandsperspektive
(2013)
Editorial
(2013)
Das „Berliner Journal für Soziologie“ beginnt seinen 23. Jahrgang mit einem Heft zum Schwerpunktthema „Ordnung und Gewalt“. Damit geben zwei Begriffe und Konzepte die Perspektive vor, die auf die Konstitutionsproblematik von Gesellschaften verweisen. Das wechselseitige Verhältnis von sozialer Ordnung und Gewalt steht im Mittelpunkt der Beiträge. Einerseits untersuchen sie dieses Wechselverhältnis anhand unterschiedlicher Gewalt- und Ordnungsformen und ihres Zusammenspiels, andererseits thematisieren sie Gewalt sowohl als individuelles, aber gesellschaftlich gerahmtes als auch als kollektives und damit organisiertes soziales Phänomen.
Einführung
(2013)
Einleitung
(2013)
Familie
(2013)
Forschende Lernwerkstatt
(2013)
Fußball als Text : Überlegungen zu den Weltmeisterschaften, Costa Rica und den Kulturwissenschaften
(2013)
Geschichte
(2013)
Gewalttätige soziale und politische Auseinandersetzungen, wie sie sich jüngst in den Staaten Nordafrikas und des Nahen Ostens, in den französischen Banlieues oder in London ereignet haben, deuten darauf hin, dass die sozialen Ordnungen, in denen sie entstehen, nicht länger ungeteilt als legitim erachtet werden. Vielmehr werden sie von alternativen Ordnungsvorstellungen infrage gestellt und herausgefordert. Auf die Erklärung derartiger Ordnungskonflikte ist die Soziologie nicht gut vorbereitet. Der Aufsatz skizziert deshalb zunächst Probleme und offene Fragen einer Soziologie der Gewalt – von der klassischen Soziologie über begrifflich-konzeptionelle und theoretisch-methodologische Probleme bis hin zu problematischen modernisierungs- und zivilisationstheoretischen Annahmen über eine künftige Rolle von Gewalt in sozialen Prozessen. Eine Erklärung der genannten Phänomene, so die These, wird nur dann möglich, wenn eine Soziologie der Gewalt den konstitutiven Zusammenhang von Phänomenen physischer Gewalt und Formen sozialer Ordnung in den Mittelpunkt stellt. Eine erklärende Soziologie, die „Warum“- und „Wie“-Fragen nicht auseinanderreißt, muss sich dazu auf die sozialen Mechanismen der Gewaltentstehung in Prozessen der Produktion und Reproduktion sozialer Ordnung konzentrieren.
Gleichheit
(2013)
Großbritannien
(2013)
Heimatgefühl als Schlüssel?
(2013)
Hochbegabung
(2013)
Das Thema „Hochbegabung“ erfährt seit mehreren Jahren zunehmende Aufmerksamkeit. Um intellektuell hochbegabte Kinder und Jugendliche angemessen fördern zu können, sind eine rechtzeitige Diagnostik und fundierte Beratung unumgänglich. Das vorliegende Buch bietet einen umfassenden und aktuellen Überblick über die theoretischen Grundlagen von Hochbegabung sowie über Möglichkeiten der Diagnostik und Förderung. Durch eine klare Strukturierung und didaktische Aufbereitung der Inhalte eignet es sich ideal für das (Selbst-)Studium und die berufliche Weiterbildung.
Einleitend setzt sich der Band mit den verschiedenen und sich zum Teil scheinbar widersprechenden Modellvorstellungen von Hochbegabung auseinander. Unterschiedliche Forschungszugänge zum Thema werden anhand prominenter Studien aufgezeigt. Weiterhin thematisiert der Band die Entwicklung von Hochbegabung sowie Eigenschaften von Hochbegabten. Hierzu gehören neben leistungsbezogenen Merkmalen bestimmte Temperamentseigenschaften oder soziale Kompetenzen. Erwartungswidrige Minderleistungen (Underachievement) und mögliche Entwicklungsbesonderheiten, die hoch relevante Themen in der pädagogisch-psychologischen Beratung Hochbegabter darstellen, werden ebenfalls berücksichtigt. Ausführlich erörtern die Autorinnen Möglichkeiten der Diagnostik von hochbegabten Kindern und Jugendlichen und stellen geeignete diagnostische Verfahren vor. Den Abschluss bildet ein Kapitel zu konkreten Fördermöglichkeiten in Kindergarten und Schule.
Indira Gandhi : ein Porträt
(2013)
The term solidarity is lacking a precise definition despite being embedded as primary law in the EU treaties and regardless of its pivotal role in the current debate on the euro crisis. Once the semantic core is unearthed we sketch three dimensions of European solidarity (motives, references, level of action). Through this we shall distil three ideal types of an intergovernmental European solidarity: a federal, an organic and a distributive type. Empirically we assign the most relevant measures, which were discussed and partially enacted in the course of the euro crisis, to the three ideal types where we identify an increasing tendency towards a distributive solidarity. Once the first elements will be upgraded to a full-blown distributive solidarity through further integration, several risks arise from a normative perspective.
Juan Jose Linz : Nachruf
(2013)
Kommunikation
(2013)
Menschenrechtsbildung
(2013)
Migration und Konvivenz
(2013)
Die Arbeit befasst sich mit der Schilderung von Paris im Erzählwerk von Delphine de Vigan, unter besonderer Berücksichtigung von zwei Romanen, No et moi (2007) und Les heures souterraines (2009), in denen der Großstadthintergrund einen zentralen Stellenwert erhält. Die Fragestellung richtet sich auf die Aspekte der Stadtdarstellung und auf die Rolle, die unterirdischen Durchgangsräumen dabei zugesprochen wird. Mögliche autoreflexive Deutungen der Stadt-Inszenierung in Bezug auf Sprache und Text, sowie Spuren einer mythisch-realistischen Charakterisierung der Stadt als Projektionsoberfläche des Imaginären
werden zum Schluss betrachtet.
Tracheotomierte Patienten, die sowohl eine Dysphagie als auch respiratorische Defizite aufweisen, haben nach der Dekanülierung häufig Probleme, sich an die translaryngeale Atmung anzupassen. Wir entwickelten ein Dekanülierungsprotokoll für diese Patientengruppe, das optional in unser bestehendes Trachealkanülenmanagement integriert werden kann. Erfüllt ein Patient die hierfür definierten Kriterien, so erfolgt unter laryngoskopischer Kontrolle die Einlage eines Platzhalters, der bis zu 3 Tage in situ verbleibt. Während dieser Probedekanülierungsphase werden die respiratorischen Funktionen und das Speichelmanagement engmaschig überwacht. Auf der Grundlage dieser Evaluation wird dann die Entscheidung für oder gegen eine endgültige Dekanülierung getroffen. Wir stellen den Ablauf, die Kriterienkataloge und die Evaluationsparameter für diese Probedekanülierungsphase vor und illustrieren den Ablauf anhand von 2 Fallbeispielen.
Mors ex nihilo - ein Totentanz von Bert Papenfuss und Jörg Immendorff im Deutschland nach der Wende
(2013)
As of the academic year 2010/2011, Berlin has a two-tier school system consisting of the Gymnasium (high school) and integrated secondary schools. On the basis of data provided by an ethnographically oriented research project, the authors examine the perception of this re-organization and the resulting challenges in a socio-economically weak district of Berlin. It becomes apparent that the equality of the two types of school repeatedly proclaimed in the educational-political discussion and usually grounded on the fact that, in principle, both schools provide the opportunity to achieve matriculation standard is primarily dependent on the conditions prevailing in the respective locations.
Global commons form a comparatively new part of international law, since the term appeared in international discussions and codifications only in the second half of the 20th century. The Common Heritage of Mankind is the corresponding legal principle that can establish an international regime to determine the legal status of non-sovereign territories and to allocate exploitation rights. Its main aim is to balance competing national claims by emphasising mankind’s common interest in the preservation and controlled exploitation of natural re-
sources. Against this background, the chapter sheds a critical light on attempts to transfer the institute of the Common Heritage of Mankind to the sphere of communication. Taking debates revolving around the New World Information and Communication Order in the framework of UNESCO since the late 1970s as a starting point, the author analyses the pitfalls and limits of attempts to establish governance structures for a global information order, including recent attempts to govern the internet.