[Effect of muscular exercise and metabolic control on cortisol, growth hormone, plasma-epinephrine and plasma-norepinephrine in type-I diabetics [author's transl)].

In the present study we investigated the influence of muscular exercise on stress-hormones (cortisol, growth hormone, epinephrine, norepinephrine) in nonketotic, juvenile-type diabetics (JD) in relation to the degree of metabolic control. The plasma-hormone-concentrations were measured in 8 well controlled JD, 8 moderately controlled JD and in 8 healthy subjects, before, during and after a 30 min bicycle ergometer test of moderate work intensity. The exercise induced rise in cortisol, epinephrine and norepinephrine wa similar in both groups of diabetics and not significantly different compared with controls. In healthy subjects growth hormone levels rose significantly with the onset of exercise, whereas in both patient groups maximal growth hormone concentrations were found at the end of the ergometer test. In moderately controlled JD, however, growth hormone concentrations were significantly higher than in well controlled JD. The results demonstrate that muscular exercise shows a similar effect on cortisol, epinephrine and norepinephrine, but not on growth hormone concentrations in nonketotic, conventionally treated JD compared with controls.