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In addition to the Dortmunder longitudinal growth study we investigated development of height, weight and height velocity in 213 healthy boys and girls 15-18 years old. Number of children decreased in the age group of 17 and 18 years old to 143. The study was performed in a longitudinal way, the measurements were taken in an one year distance. The median height gain in boys between 15 and 18 years amounted to 9.3 cm, in girls to 2.1 cm, respectively. 18 years old boys are 180.1 cm tall, girls 167.9 cm. The median increment of body weight in boys from 15-18 years amounted to 7.3 kg, in girls 4.4 kg, respectively. Median weight in 18 years old boys amounted to 65.2 kg, in girls to 58.0 kg. International comparison with other longitudinal growth studies shows a trend of somewhat higher weight, height and height velocity of the children from our study.

From 1968-78 a longitudinal study was performed concerning development of lengths of trunk, hand, forearm, upper arm, whole arm, lower leg, thigh and whole leg in 709 healthy boys and 711 girls aged 2,5 to 15 years. In boys the mean increase in lengths of trunk amounted to 17.7 cm, of hand to 8.1 cm, of forearm to 12.2 cm, of upper arm to 16.1 cm, of whole arm to 36.8 cm of lower leg to 21.5 cm, of thigh to 27.3 cm, and of whole leg to 54.0 cm. The corresponding lengths in girls amounted in 16.9 cm, 7.2 cm, 11.0 cm, 14.0 cm, 32.6 cm, 18.7 cm, 24.5 cm, and 46.4 cm. Lengths investigated increase almost linearly between 3 and 11 years of age both in boys and girls. Beginning with 12 years boys have an increased development of all lengths when compared with girls.

From 1968--1978 a longitudinal study was performed concerning development of height, weight and skinfold thickness in 709 boys and 711 girls 1.5--16 years old. Increase in height during time studied amounted to 92 cm in boys and 82 cm in girls. Mean increases in weight amounted to 49.3 kg and 41.2 kg respectively. Boys had highest increase in growth from 13 to 15 years, girls from 11 to 13 years. Skinfold has been thicker in girls than in boys. Triceps Skinfolds had been ped wave-like in both sexes. Following an unchanged decreased phase, the skinfolds remaining developed its thickness constantly. The phase of stagnation paralleled time of highest increase in growth.

10,126 determinations of hemoglobin concentration, 10,055 of hematocrit and 4,420 of serum iron were performed in 7,753 infants and children aged 1 month to 16 years to give normal values for this period in a large town. Both, concentrations of hemoglobin and hematocrit decreased during the 3rd and 8th month. The first decrease in serum iron level appeared later in month 4, the time of the second fall was identical with that of hemoglobin and hematocrit. In females, a third decrease of iron levels appeared with 13 years. Between the 2nd and 8th year of life, a period of instable iron nutriture became apparent. Concentrations of hemoglobin, hematocrit as well as serum iron depend on age. 0.4% of males and females showed a deficient concentration of hemoglobin. 2.9% of males and 1.1% of females had a low, nonacceptable hemoglobin value. Iron deficiency occurred in 8.5% of males and in 8.3% of females. It is probable that the number of children with a pre-latent or latent iron deficiency is much higher.

From 1968--1978 a longitudinal study was performed concerning development of shoulder and thorax breadths, thorax depth, breadths of hand, pelvis, humeral and femoral epicondylus in 709 boys and 711 girls aged 2.5 to 15 years. During time studied mean increases in boys amounted in shoulder breadth to 15.1 cm, in thorax breadth to 9.8 cm, in thorax depth to 6.6 cm, in hand breadth to 3.1 cm, in breadths of pelvis I to 10.9 cm, of pelvis II to 8.5 cm, in breadth of humeral epicondylus 2.5 cm and of femoral epicondylus 3.5 cm. The corresponding data in girls amounted to 14.0 cm, 8.0 cm 4.8 cm, 2.5 cm, 11.0 cm, 8.0 cm, 2.0 cm and 2.9 cm. The parameter measured developed both in boys and girls almost linearly until year 12. Beginning with year 13, development of breadths increased in boys are remained unchanged in girls. Development of breadth in boys was always increased compared with girls except pelvic breadth I.

From 1968--1978 a longitudinal study was performed concerning development of acromial, radial, styleoideal, daktylion, ileospinal, tibial and medial malleolus heights in 709 boys and 711 girls aged 2.5 to 15 years. During time studied, mean increases in boys amounted in acromial height to 70.0 cm, in radial height to 53.8 cm, in styleoideal height to 41.5 cm, in daktylion height to 33.4 cm in ileospinal height to 52.0 cm, in tibial height to 25.4 cm and in medial malleolus height to 3.8 cm. Corresponding data in girls amounted to 62.8 cm, 49.3 cm, 42.4 cm, 31.2 cm, 46,7 cm, 22.4 and 3.2 cm. Boys had a more intensive development of heights than girls except for styleoideal height. The heights measured developed almost linearly in boys and girls 4 to 10 years old. Development of heights decreased in 11 and 12 years old boys and increased again with year 13. In girls, intensity of growth decreased beginning with year 13.

From 1968--1978 a longitudinal study was performed concerning development of thorax, upper arm, thigh and calf circumferences in 709 boys and 711 girls 2--15 years old. In boys the mean increase in thoracic circumference amounted to 32.9 cm, in upper are circumference to 8.3 cm, in thigh circumference to 20.6 cm and in calf circumference to 13.0 cm. The corresponding circumferences in girls amounted to 30 cm, 7.9 cm, 22.4 cm and 12.7 cm. In boys the circumferences developed almost linearly until year 15. Girls had the same linear development until year 13. Between years 14 and 15 girls had in increased development of all circumferences studied.

From 1974--1977 anthropometric investigations were performed in 173 healthy infants during the first year of life. Weight, height, skinfold thickness, head-, chest-, and abdominal circumferences had been measured as parameters for growth. Birth weight increased ceased threefold on 12th month in males only. There is no difference in the increase of height in males and females. Width of skinfold thickness increases rapidly until month 5, except abdominal skinfold. A radual decrease follows thereafter. The difference in decreasing velocity of skinfold thickness indicates changes in distribution of subcutaneous fat tissue during infancy. Growth of head-, chest-, and abdominal circumferences of males are similar to that of females.