Original paper

Association between BMI and height in girls aged 7?18 years ? a longitudinal study

Wronka, Iwona

Anthropologischer Anzeiger Volume 70 No. 3 (2013), p. 319 - 329

published: Nov 1, 2013

DOI: 10.1127/0003-5548/2013/0332

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ArtNo. ESP140007003006, Price: 29.00 €

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Objective: Several studies indicated that there is a significant relationship between BMI and body height, however, the nature of this relationship is not fully explained. The aim of the study is to evaluate cross relationships between height, BMI and the pace of biological development in girls. Subject: 1008 schoolgirls aged 16?18 years for whom earlier data on weight and height were available. Measurements: The tests involved body height and weight measurements and obtaining information on the age at menarche. Body height and weight data at earlier age were collected from schools' medical records. Each girl had been measured at the age of 7, 9 and 14 years by qualified school nurses. Age at menarche was used for assessing the pace of biological development. Results: Differences in mean BMI depending on body height category (very short, short, average, tall, very tall) were observed only in younger age groups. BMI values increase along with an increase in body height at the age of 7 and 9 years. No statistically significant differences in the age at menarche between respective body height categories were ascertained. An analogy analysis was performed for BMI categories (underweight, normal weight, overweight). Overweight girls were taller than normal-weight and underweight girls up to the age of 14 years. The age at menarche was the earliest for girls, who were at 7 years or at 9 years overweight. At the age of 16?18 years the shortest height and the earliest onset of menarche were reported in the case of overweight subjects. Conclusion: Overweight girls were more advanced in growth and development than their peers. Taller body height in overweight children is noted before reaching puberty and it is a consequence of rapid growth and maturation.


age at menarchebmiheightlongitudinal study