[Evaluation of the development of the respiratory system in big-city adolescents, e.g., students of the Technical School of Mechanics and the Grammar School in Lódź (II)].

In 104 students from Secondary Technical School of Mechanics (TM) and 37 students from Grammar School (LO, 15-19 year-old, a longitudinal study of respiratory system was carried out. During the whole period of studies such spirographic parameters as VC, FEV1, FIV1, IMBC and Ziemssen and Amar indices were assessed. Spirographic parameters were assessed on the Pulmotest Godard. The subjects from each school were divided into two sub-groups: those practising in a sporting club (sport group--SG) and those who do not practise any sport in an organized way (non-sport group--NSG). In the students from TM and LO spirographic parameters were increased during the whole period of investigation and they reached the highest level in the first and second form. No differences were observed between students of TM and LO as regards the test parameters. The highest values were observed in the sport subgroups--the differences in the first and second forms being statistically significant.