Hans-Joachim Menzel

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Assessment of lower extremity bilateral asymmetries in soccer players is important for both injury prevention and performance. The purpose of this investigation was to compare isokinetic knee extensor assessment of asymmetry with a more specific countermovement jump (CMJ). Forty-six Brazilian male professional soccer players participated in this study. The(More)
Das Gesundheitswesen wird technisch durchorganisiert. Der kranke Mensch wird vielfach eingebunden: Er soll Informationsmaterial studieren, über Einwilligungen entscheiden, zwischen Alternativen auswählen, Zugriffe durch Dritte freigeben. Besonders in komplexen Telematik-Projekten kann für die Betroffenen aus dem Freiheitsrecht auf informationelle(More)
The objective was to estimate the reliability and criterion-related validity of the Jump-and-Reach Test for the assessment of squat, countermovement, and drop jump performance of 32 male Brazilian professional volleyball players. Performance of squat, countermovement, and drop jumps with different dropping heights was assessed on the Jump-and-Reach Test and(More)
BACKGROUND Stretching exercises are able to promote adaptations in the muscle-tendon unit (MTU), which can be tested through physiological and biomechanical variables. Identifying the key variables in MTU adaptations is crucial to improvements in training. OBJECTIVE To perform an exploratory factor analysis (EFA) involving the variables often used to(More)
Lower extremity kinetic data during walking of 12 people with chronic poststroke were reanalyzed, using functional analysis of variance (FANOVA). To perform the FANOVA, the whole curve is represented by a mathematical function, which spans the whole gait cycle and avoids the need to identify isolated points, as required for traditional parametric analyses(More)
This cross-sectional study sought to analyze the associations between health conditions and the inadequate consumption of fruit and vegetables (FV) of 1,255 men and women attended in Primary Healthcare Units in Belo Horizonte (State of Minas Gerais). Data collection included FV consumption, socioeconomic status and health conditions. Results are presented(More)
The aim of this study was to present a new training algorithm using artificial neural networks called multi-objective least absolute shrinkage and selection operator (MOBJ-LASSO) applied to the classification of dynamic gait patterns. The movement pattern is identified by 20 characteristics from the three components of the ground reaction force which are(More)
Datenschutzrechtliche Einwilligungen zur Erfassung und Weitergabe persönlicher Daten dienen vielen Herren und vielen Zwecken, aber selten der Klärung von Kommunikationsbeziehungen. Was folgt, wenn die betroffene Person die Einwilligung ablehnt? Muss sie dann Nachteile hinnehmen? Lässt das Gesetz die Datenerhebung dennoch zu? Der Beitrag geht diesen Fragen(More)
So segensreich sie bei der medizinischen Informationsverarbeitung auch sind — immer komplexere elektronische Informations- und Kommunikationssysteme im Gesundheitswesen drohen den Patienten zum Objekt technischer Sachzwänge zu machen. Zur Ausschöpfung der technischen Optionen werden ihm nicht nur Schweigepflichtentbindungen und Einwilligungen in(More)