[Effects of various work loads on premature beats in infancy (author's transl)].

Exercise testing in the form of knee bends is part of routine examination of children with a tendency to show premature beats. The commonly carried out exercise tests cause psychic stress, thereby intensifying these arrhythmias and giving rise to diagnostic errors. For this reason seven children 4--14 years old were additionally examined under various sports comparable to those work loads. It could be demonstrated that these telemetrically listed ECG traces showed definitely fewer premature beats than those listed under laboratory conditions. This method enables more exact evaluation of arrhythmias by exclusion of psychic stress and helps to beware children from unnecessary restriction of way of life.