OBJECTIVES: The aim was to investigate changes of balance maintenance ability in different trimesters and during menopause. METHODS: Investigation was performed at the Department of Obstetrics and Gynaecology, Faculty of Medicine, University of Pécs. Bretz stabilometer was used to determine balance- and coordination abilities. Static balance was measured with opened- and closed eyes Romberg-test while dynamic balance was examined with the help of I. and II. programmes of the measuring instrument. The total number of examined subjects’ was 60: 20 young adults, 20 pregnant women (follow-up was performed in the 1st, 2nd and 3rd trimesters) and 20 women in menopause. Those suffering from severe locomotor disorders, neurological and internal diseases, in the control group with the existence of gestation and pathological pregnancy were closed out. Statistical data were calculated according to (mean, standard deviation, range, F-test and Student’s methods T-probe) MS Excel 2003. RESULTS: Comparison of survey results of static balance did not show significant difference in the three groups. During the survey of dynamic balance in the 1st programme significant improvement was observed analyzing the results of young adults and pregnant women (p<0,05). Comparing the results in case of young adults and in menopause (p<0,05) as well as in groups of pregnant women and in menopause (p<0,05) a definite impairment was observed. In the 2nd programme on the basis of the results in the 4th sub-programme a significantly worse performance was measured in menopause (p<0,05). CONCLUSIONS: Measurement results proved that in major stages of life, with ageing, balance ability decreases. In our case, on the basis of survey data in the 1st and 3rd trimesters it is proved that with the progression of trimesters balance ability significantly improves.