Anna Radochońska
Sylwia Dudzik
Lidia Perenc
Secular changes in age of menarche in girls from Boguchwała and Krasne examined in 1976/77, 1988/89 and 2003/04 years as compared to population of the Rzeszow girls
Anna Radochońska
Sylwia Dudzik
Lidia Perenc
Faculty of Education, University of Rzeszow, Rzeszów, Poland
Z Zakładu Anatomii Porównawczej Kręgowców i Antropologii UR
Institute of Health Sciences, Medical College of Rzeszow University, Rzeszow, Poland
Abstract
The paper presents the results of an investigation on age of puberty carried out in years 1976/77, 1988/89 and 2003/04 on group of rural adolescent girls from Boguchwała and Krasne. An average age of menarche was calculated. The girls from Rzeszów city were selected as a control group. It was observed that age of menarche in period of 1976/77–2003/04 has declined in the Boguchwała girls from from 13,1 to 12,5 years, and in Krasne girls respectively from 13,4 to 12,7 years. In the Boguchwała girls during period of 1976/77–1988/89 firstly has occurred an 0.2-year delay in menarche, and secondly (in period of 1988/89–2003/04) – an 0.8-year acceleration. In the Krasne girls an acceleration of process of puberty is marked during whole period, especially in years 1988/89–2003/04. In girls both from Boguchwała and Krasne in 1976/77 and 1988/89 years the menarche appears later than in the Rzeszów girls. A comparison of results of research carried out in 2003/04 shows that in the Krasne girls the menarche appears only 0,1-year later than in the Rzeszów girls (age of menarche is 12,6 years), and in the Boguchwała girls it appears 0,1-year earlier.
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