Introduction. Regular physical activity has positive effects on human body composition, even if not combined with a diet. For many people this activity aims to reduce the amount of fat in some areas of the body and targets body shaping. Objectives. The main objective of this study was to learn about the effects of a 12-months regular participation in aerobic training exercises. Methods. This study was voluntarily attended by 89 women with an average age of 31.62, practicing aerobic exercises in gyms, three times a week for a period of 12 months. We carried out anthropometric measurements of subjects at the beginning and at end of the study, respectively, and data was statistically analysed using the SPSS 23.0 software. Results. Data collected was statistically processed, showing that participation in physical training led to reducing body weight by 4.81 kg, decrease of adipose tissue - between the two moments there was a difference of 5 % - fat mass decreased by 4.26 kg, and lean body mass by 0.55 kg. Significant decrease in chest, waist and hip circumference was also noticed. Conclusions. Regular participation in physical training programs involving aerobic exercise for 12 months has had the effect of reducing body weight and the amount of fat in some areas of the body, materialized by decreasing the value of the circumference of the chest, waist and hips, with the intention of reaching the ideal body weight and aiming for body shaping.

Keywords: body shaping, physical activity, adipose tissue/ fat, adult women, ideal body weight.