[Exercise test in 100 healthy children between 5 and 12 years of age (author's transl)]

100 healthy children, between 5 and 12 years of age underwent maximal exercise test on a bicycle ergometer in sitting position. Particularly interesting seem to be the observations on maximal heart rate during exercise, maximum work load, energy cost in terms of heart rate, EGG during exercise. As concerning the maximal heart rate, it was observed a levelling of around 195 beats min. for all the subjects. A low increase of systolic blood pressure was observed during strenuous exercise. The maximum tolerated work load increases accordingly with the increase of body surface area and age; taking into account the maximum value of heart rate during exercise (195 for all subjects), it arises a different energetic cost in terms of beats per min. in favour of 12 years subjects compared to youngers. None rhythm or conduction disturbances was observed during exercise, neither variations of the ventricular repolarization appeared during exercise.