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    • "However, these are difficult to implement and have high cost, being used in laboratory environment. With the evolution of technology, it is observed trend for the development of more sophisticated techniques for estimation of body composition proposed to use outside the laboratory environment [6]. Thus, due to its low cost, the anthropometric technique remains the most used around the world. "
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    ABSTRACT: The objective of this study was to compare and correlate the Portable Ultra Sound (US) measuring technique to the skinfold measuring technique (SF) to estimate body fat percentage (%F) in young adults. Sixty military were evaluated, all males, divided in two groups: Group 1 (normal) composed by 30 military with Body Mass Index (BMI) until 24.99 kg/m(2) and Group 2 (overweight) composed by 30 military with BMI > 25 kg/m(2). Weight, height, skinfolds and ultrasound were measured in 9 points (triceps, subscapular, biceps, chest, medium axillary, abdominal, suprailiac, thigh and calf). Body fat average values obtained by skinfold thickness and ultrasound measurements were 13.25 ± 6.32 % and 12.73 ± 5.95 % respectively. Despite significant differences in measurements of each anatomical site, it was possible to verify that the total final body fat percentage calculated by both techniques did not present significant differences and that overweight group presented greater similarity between the values obtained using caliper and ultrasound equipment.
    Conference proceedings: ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference 08/2012; 2012:1952-5. DOI:10.1109/EMBC.2012.6346337
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    ABSTRACT: To correlate anthropometric data and respiratory muscle strength (RMS) of normal-weight and obese women. The sample consisted of 103 sedentary women, divided into two groups: 57 obese and 46 normal-weight women. Waist circumference (WC) and hip circumference (HC) were measured to calculate the waist-to-hip ratio (WHR), and maximal respiratory pressures (Pmax) were determined using an analog vacuum manometer to ± 300 cm H2O. Body composition was measured using tetrapolar bioelectrical impedance analysis. Descriptive statistics was used for data analysis, in addition to the Student t test for independent samples, Pearson correlation, and stepwise multiple linear regression analysis. Significance level was set at p ≤ 0.05. The analysis showed significant differences in Pmax of normal-weight women (PImax = -73.04±16.55 cm H2O and PEmax = 79.67±18.89 cm H2O) and obese women (PImax = -85.00±21.69 cm H2O and PEmax = 103.86±20.35 cm H2O). Anthropometric and manometric variables showed no significant correlation in both groups. When analyzing the influence of bioelectrical impedance on RMS, a positive correlation was observed between lean body mass and PImax. Bioelectrical impedance and obesity showed a direct correlation with RMS. WC and WHR had no influence on RMS of obese women; however, a relevance to risk factors for associated diseases was observed. We believe that these results are due to an adjustment to excess body weight over the years.
    Revista da Associação Médica Brasileira 01/2010; 56(4):403-8. · 0.93 Impact Factor
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    ABSTRACT: High homocysteine (Hcy) concentrations are associated with the risk of cardiovascular disease. Despite the known high incidence of the use of food supplements by athletes, little is known about the possible effect of the use of protein supplements containing methionine (Met) on Hcy metabolism. The objective of the present study was to test the hypothesis that the consumption of protein supplements can increase the ingestion of Met and Hcy levels. Seventeen swimmers (8 males and 9 females) aged 20.11:26 years were evaluated in terms of biochemical profile and habitual food consumption. After the application of a questionnaire about the use of food supplements, the swimmers were divided into three groups: control (C), energy supplement consumption (ES), and protein-energy supplement consumption (PES). The results showed that 82% of the individuals used some type of supplement, with PES being consumed by 36% of them. The addition of a supplement did not significantly increase protein or methionine intake in the PES group compared to C and ES groups. No significant differences in plasma Hcy concentrations were detected between groups, but a positive correlation was observed between Met intake and serum Hcy (r = 0.65; p=0.01), and a negative correlation was also detected between serum Hcy and serum vitamin B12 (r = -0.52; p=0.03). In conclusion, it was observed that, even in the absence of protein intake modulation and changes in Hcy levels, the ingestion of methionine through food supplements is associated with plasma Hcy levels.
    INTERNATIONAL SPORTMED JOURNAL 08/2009; 10(4):194-204. · 0.73 Impact Factor
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