Correlação e concordância entre métodos de avaliação da composição corporal de indivíduos adultos

Abstract

Objective Evaluate the body fat percentage of adult individuals using different analysis methods, as well as compare the agreement between the methods. Methods Body composition was evaluated by three methods: adipometry, bioimpedance and ultrasound. The study included university students from the Pontifical Catholic University of Goiás, aged 18 to 40 years and BMI classified as eutrophic (BMI between 18.5 and 24.9 kg/m2), overweight (BMI between 25.0 and 29.9 kg /m2) or grade I obesity (BMI between 30.0 and 34.9 kg/m2). Weight, height, age, practice of physical activity, skinfolds, percentage of fat, lean mass and fat mass in kilograms were the information collected in the survey. Results It was observed in the study that, with regard to the thickness of the seven anatomical sites evaluated by ultrasound and adipometer, the methods did not agree, with the exception of the pectoral site. The average percentage of body fat of the participants, evaluated by the methods of adipometry, bioimpedance and ultrasound was 19.3%, 31.18% and 20.99%, respectively. The agreement between the methods of adipometry and bioimpedance, and ultrasound and bioimpedance, was poor. The agreement between the adipometry and ultrasound methods was substantial. Conclusion The correlation between the thickness of the seven anatomical sites evaluated by US and ADP was mostly moderate to strong, however, the methods did not agree, with the exception of the pectoral site. ADP showed a very strong correlation and substantial agreement with the US assessment.