Introduction:
Problems of posture concern large number of children population and adolescents. Early school age is a period in which the increasing number of faulty posture is most frequent. Polluted environment can affect development of posture during prepubertal growth. The aim of the study was to assess the posture in the sagittal plane and incidence of different types of body posture in boys and girls living in polluted environment.

Material and Methods:
The study was conducted in 2002 in all primary schools in Polkowice. 1311 children were evaluated: 620 boys and 691 girls aged 7 to 11. The measurement included basic somatic features such as height and body weight and for the posture in the sagittal plane photogrametric analysis was used. The body posture types were identified according to Wolaƒski typology modified by Zeyland-Malawka. The correct posture types included RI, RII – balanced types, KI – kyphotic and LI – lordotic type. In the faulty group there was RIII – balanced types, KII, KIII – kyphotic, LII and LIII – lordotic posture types.

Results:
Based on the study it was observed that number of regular body posture types in children from Polkowice between 7 and 11 decreases with age. At the same time it was observed that the faulty body posture types are more common in groups of girls (from 44% to 57%) than boys (from 38,5% to 52%). The dominant type of body posture in boys are balanced and kiphotic. In boys between age 7 and 10 there are more regular body posture types – from 51% to 61,5%. The dominant type of body posture in girl groups are balanced and lordotic types. In girls between 8 and 11 there are more faulty body posture types – from 50% to 57%.