Comparação do percentual de gordura obtido por bioimpedância, ultrassom e dobras cutâneas em adultos jovens

Abstract

Introductions e objective: To compare portable ultrasound (US) and bioimpedance analysis (BIA) with skinfolds (SF) to estimate body fat percentage in adults. Methods: 195 military men were assessed and they had their weight, height, body fat by bioimpedance, skinfold in 9 points and ultrasound (US) collected. linear regression was used for the development of a new equation for body fat percentage estimation in young adults (males). results: The group had mean age of 23.07 ± 7.55 years and height and weight with mean and standard deviation of 72.65 ± 10.40 kg, 1.74 ± 0.06 meters, respectively. Comparing the results between the US and SF, there was significant correlation for all points evaluated, with the thigh skinfold presenting the highest correlation, followed by the chest one. When the three methods are compared, the US presented better correlation with the BIA than with SF. A new equation for estimation of fat percentage by US can hence be proposed. Conclusions: It was noticed that in the studied population, US and BIA can estimate the body fat percentage with good correlations with the SF method.

Military Physical Training, Muscular Strength, and Body Composition of Brazilian Military Personnel

“…A study conducted by Neves et al, 13 in the city of Curitiba, evaluated a sample of 195 military personnel from the EB, mean age of 23.1 (± 7.6) years, and found a mean fat percentage of 14.6 ± 6.4)%, values close to those found in the present study. In another study in a sample of 92 soldiers, with a mean age of 20 (± 1.8) years, performed by Botelho et al, 14 the percentage of fat obtained was 13.8 (± 5.1)%.…”

Portable A‐Mode Ultrasound for Body Composition Assessment in Adolescents

“…For this research, the 7‐site option was the chosen, since previous research indicated that equations using more anatomic points tended to be more precise for estimating BF%. The 9‐site option was not adopted because of the lack of studies indicating its reliability 3 , 9 . For each evaluation, at least 2 measurements were made at each point, with the possibility of performing a third one in cases of software requests due to discrepancies in the 2 previous measurements.…”

Estimation of Female Body Fat Percentage Based on Body Circumferences

“…3,4 This technology may present imprecise data as a result of recent physical activity or alcohol consumption, on the same day or on the days before the exam, for example. 5 It is common the estimation of equations aiming to predict BF%, with low-cost variables such as the skinfold method and body circumferences (BC), using DXA or BIA as a parameter.…”

“…Among the anthropometric indicators of lower cost and faster implementation, the body mass index (BMI) is a highly used simple equation (body mass/stature²) that classifies individuals as underweight, normal weight, overweight and obesity I, II and III 5 . Although high BMI has already been correlated with risk of arterial hypertension, 1,6 the method is limited because it does not differentiate lean body mass and fat mass in its calculation, making it difficult to use it as a predictive value of body fat percentage BF% and abdominal obesity.…”