Abstract

Measurements of free noradrenaline and adrenaline were made in the urine of 28 men sampled after rest and exercise prior to, and following six and twelve weeks of an exercise programme. The training consisted of thirty minutes of running and walking four times per week at an intensity estimated at 75 of the age predicted maximum heart rate. A fifteen minute standardized cycle ergo-meter work test was conducted on all subjects prior to the training and following six and twelve weeks of training. Noradrenaline and adrenaline excretionsin the urine were measured before and after the work test. Significant de- creases in noradrenaline measured during rest and after exercise were found in the training group, while the excretion levels of catecholamines increased or remained the same for the untrained group throughout the study. It was con-cluded that resting and exercise catecholamines were lowered in the subjects who participated in an exercise programme, and that the changes are more appa-rent in noradrenaline than adrenaline. Verf.-Referat