Abstract
Seventy physically healthy 14-year-old adolescents, 40 boys and 30 girls, were evaluated psychologically and endocrinologically. After the psychological tests (Anxiety Score Test for Adolescents, Rosenzweig, Pictures Frustration Test for Children), subjects were divided into group A, with low anxiety/sense of guilt and high self-esteem/tolerance to frustration and group B with the opposite. In both groups, we measured basal plasma levels of noradrenaline (NE), growth hormone (GH), prolactin (PRL), melatonin (MT) and luteinizing hormone (LH) and their response to physical exercise (the Harvard step test). Basal levels of the hormones and of NE were not different in the two groups. After the physical stimulus, NE levels rose significantly more in B girls than in A and significantly less in B than in A boys. GH and PRL levels increased only in A girls and MT in B boys, while LH levels decreased in A boys and girls but not in B subjects.
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