[Behavior of biochemical stress reactions in real professional performance of teachers in relation to age and occupational ability].

In order to investigate the strain of teachers as persons with chiefly psychic load several hormonal parameters (ACTH, HGH, cortisol, catecholamines) and trace elements (zinc, copper) were measured at a teaching day as well as at a teaching-free day. The different influences of age and reduced professional performance on the concentrations of the biochemical parameters were shown. It seems that the variation of release of catecholamines is the most important parameter for the diagnostic of strain in such professional load.