[Indicators of circulation, respiration and muscle strength in puberty].

Measure of vital capacity, grasping strength, stature, weight, and systolic and diastolic blood pressure as well as pulse frequency, both before and after exertion, were made on 165 twelve to fourteen year-old boys and girls from Hamburg schools-(Gymnasium). Age and sex showed significant mean differences on these measures, but not constantly so. Analysis of variance indicated some influence of age and sex, but these variables explained only a small part of total variance of physiological measures.

Relations between sex hormone level and characters of hair and skin in healthy young men.

Total testosterone and dihydrotestosterone in blood serum as well as free testosterone in saliva were determined by radioimmunoassay in 110 healthy young men. The results were compared with the development of terminal hair on the trunk and limbs, with the disposition to balding and with the disposition to acne. No significant correlations were found between terminal hair development and absolute androgen levels; however, some significant values were observed in the case of the metabolic rate of dihydrotestosterone/testosterone and the proportion of free to total testosterone.

Relations between anthropometric characteristics and androgen hormone levels in healthy young men.

Inter-individual correlations between androgen hormone levels and anthropometric features were computed using data from a sample of 110 healthy young men. Radioimmunoassays were used to determine the total testosterone and dihydrotestosterone in the serum and the free testosterone in the saliva. The 58 body measures encompassed the head, trunk and extremities in terms of their length, breadth and circumference.

Androgen levels and components of aggressive behavior in men.

Serum concentrations of testosterone (Tser), 5 alpha-dihydrotestosterone (DHT), and free testosterone (Tsal) in saliva were determined in 117 healthy young men between the ages of 20 and 30. A battery of standardized tests and projective techniques were administered simultaneously in order to measure various components of aggression, including sexual aggressiveness. All three androgens show reliable positive correlations with self-ratings of spontaneous aggression.

Sex hormones and cognitive functioning in men.

Blood and saliva samples were obtained from 117 healthy young men, following which radioimmunoassays were used to determine the serum concentrations of testosterone (Tser), 5 alpha-dihydrotestosterone (DHT), and the level of free testosterone (Tsal) in the saliva. The cognitive functioning was determined by five spatial and six verbal ipsative test scores, reflecting intra-individual variance in the performance of these tasks, independent of the person's general level of achievement. Within the normal physiological range of androgen levels--especially Tser and to a lesser extent DHT and Tsal--showed a significantly positive correlation with measures of spatial ability and field dependence-independence and a significantly negative correlation with measures of verbal production.