Comparação da composição corporal de bailarinas, praticantes de atividade física e sedentárias por meio da bioimpedância elétrica

Abstract

Considering the benefits of sports practice and the importance of body composition evaluation, the present study aims to compare the body composition of dancers, physical activity practitioners and sedentary ones, using the Electric Bioimpedance method. Young adults were studied in three age-matched groups, evaluated by means of the electrical bioimpedance (BIA) for fat free mass percentages (% MLG), using predictive equations for MLG and body fat (% GC), estimated by 100% difference and % MLG result. The results showed averages of% GC for dancers, physical activity practitioners and sedentary women: 25.79 (2.68), 28.44 (2.68) and 31.22 (3.12), respectively. As for the predictive equations, it was observed that the equations of Kyle et al, Lukaski et al and Gray et al showed significant differences for MLG between dancers and sedentary ones, and that of Segal et al showed a strong correlation between MLG and age for dancers . It is concluded that further studies are necessary with these equations, especially regarding the comparison with a gold standard method, such as DXA, in order to study their possible validations for the groups of the present study, mainly for dancers, which is the group more devoid of validated equations for BIA.