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Biomedical subjects

M Maurus

Publications and source records attributed to M Maurus.

At least 19 recordsLinked to original sources
PubMed1994

Metabolic and hemodynamic changes during isokinetic muscle training. A controlled clinical trial.

Twenty-one healthy males aged 20-36 years were examined for hemodynamic and metabolic parameters such as heart rate, oxygenation, lactate, blood pressure, under isokinetic and ergometric loadings. The healthy volunteers were tested by increased loads and constant times with an identical isokinetic and ergometric power. The important results are: Heart frequency and blood pressure are higher under isokinetic than under ergometric conditions. Oxygenation is equal in both tests. The lactate values show for the isokinetic maximal and for the ergometric submaximal loadings. The definitive factor for this variation is the relation between force and velocity. The higher tension of the muscles and the higher activity of the fast-twitch fibers seem to be responsible for the increasing of sympathicotonia. The clinical impact of this controlled study is: 1. Isokinetic testing might be dangerous for patients with cardiac diseases or circulatory disturbances. 2. Isokinetic training programs have to pay attention to joint and internal diseases at the same level. 3. During the first isokinetic test all precautions for a possible emergency case have to be taken.

Adult↗
PubMed1986

Interrelations between structure and function in the vocal repertoire of Saimiri. Asking the monkeys themselves where to split and where to lump.

The identification of units used in primate vocal behaviour and the isolation of components essential for intraspecific communication (i.e. having a function) from possibly inessential ones (i.e. having no function) is an absolute prerequisite to a successful analysis of primate vocalizations. For most calls special methods are required because neither the essentials of structure nor their relation to function are known, nor the context involved. For calls without any distinct frequency modulation we showed that the animals utter calls containing categorical amplitude changes. The changes within one call are either very small or very large. The positions or the very large amplitude changes within a call depend on the social situation the animals were subjected to and affect the immediately succeeding vocalization of the conspecific. This proves that in vocal communication discrete components are produced (structure) as well as used (function).

Animal Communication↗
PubMed1975

An approach to the interpretation of the communicative meaning of visual signals in agonistic behavior of squirrel monkeys.

The repertoire of the visually recognizable agonistice signals of the squirrel monkey can be divided up into classes in such a manner that elements of the same class have a similar, and elements of different classes a different communicative meaning. The differences between these classes are described using quantitative values. An attempt is made to derive clues from these differences for an interpretation of the communicative meaning of the individual classes. The admissibility of the criteria used and the question of the general validity of the quantitative values are discussed.

Aggression↗