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1.
Arq. gastroenterol ; 56(3): 294-299, July-Sept. 2019. tab
Article in English | LILACS | ID: biblio-1038710

ABSTRACT

ABSTRACT BACKGROUND: During weight gain, most of the excess adipose tissue accumulates in the trunk. This alters the body shape and makes collection of anthropometric measurements, especially waist circumference (WC), difficult. OBJECTIVE: To evaluate the sensitivity and applicability of additional abdominal measurements in order to assess body composition of obese women. METHODS: A total of 30 women between 20 and 50 years of age and BMI above 30 kg/m² were assessed. Three WC measurements, were performed: at the umbilical scar designated as WC1 and at 8 and 16 cm above the umbilical scar, designated as WC2, and WC3 respectively. The correlation (r) between these anthropometric measurements and their sum was assessed against the parameters fat mass (FM), free fat mass (FFM), body fat percentage (%BF), and trunk fat percentage (%TF), obtained by total and trunk segmental bioelectric impedance analysis (BIA) as well as by the golden standard total and trunk dual energy X-ray absorptiometry (DXA). RESULTS: The measurements WC1, WC2, WC3, and their sum correlated strongly and moderately with the parameters FM, FFM, and %BF in total BIA and in both total DXA and trunk DXA. CONCLUSION: The results demonstrated a robust correlation between the sum of the three WC measurements and total and trunk DXA in obese women suggesting that such measurements may be a good indicator of body and trunk fat in women, actually superior to BIA results. The use of these three measurements may be an alternative for the assessment of body and trunk fat, in those cases in which the body shape due to adipose tissue trunk accumulation makes accurate classical measurement (WC1) difficult.


RESUMO CONTEXTO: O acúmulo de tecido adiposo excessivo no ganho de peso se dá em maior proporção no segmento do tronco, leva à alteração dos formatos corporais dificultando a tomada de medidas antropométricas, em especial a circunferência abdominal (CA). OBJETIVO: Avaliar a sensibilidade de medidas adicionais na região abdominal, considerando cada medida individualmente e sua somatória, e a aplicabilidade dessas medidas na avaliação da composição corporal de mulheres obesas. MÉTODOS: Foram avaliadas 30 mulheres com idade entre 20 e 50 anos e IMC acima de 30 kg/m² com a realização de três medidas de CA denominadas: CA1 padronizada na cicatriz umbilical, CA2 a 8 cm acima da cicatriz umbilical e CA3 a 16 cm acima da cicatriz umbilical. Foi avaliada a correlação (r) destas medidas antropométricas e de sua somatória com os parâmetros massa gorda (MG), massa livre de gordura (MLG), porcentagem de gordura corporal (%GC) e do tronco (%GT) obtidos por impedância bioelétrica (BIA) total e segmentar do tronco e por absorciometria de raios-X de dupla energia (DXA) total e do tronco, como padrão ouro. RESULTADOS: As medidas CA1, CA2, CA3 e a somatória das três tiveram correlação forte e moderada com os parâmetros MG, MLG e %GC tanto para BIA total como para DXA total e DXA do tronco. CONCLUSÃO: Os resultados deste estudo mostram forte correlação entre a soma das medidas de três pontos no abdome com DXA de tronco e total, em mulheres obesas, sugerindo serem estas medidas, um bom indicador de gordura corporal e de gordura da região do tronco, superior aos resultados obtidos por BIA. O uso dessas três medidas pode ser um indicador alternativo de avaliação da gordura corporal e de tronco, nos casos em que o formato corporal de acúmulo de gordura na região do tronco, dificultar a acurácia da medida clássica (CA1).


Subject(s)
Humans , Female , Adult , Young Adult , Body Composition/physiology , Abdominal Fat/metabolism , Waist Circumference/physiology , Obesity/metabolism , Body Weight , Body Mass Index , Electric Impedance , Middle Aged
2.
Ciênc. Saúde Colet. (Impr.) ; 24(6): 2317-2324, jun. 2019. tab
Article in Portuguese | LILACS | ID: biblio-1011803

ABSTRACT

Resumo O objetivo deste artigo é investigar a associação entre demência e indicadores antropométricos em idosos de Florianópolis. Estudo transversal, de base populacional, realizado com 1.197 idosos (≥ 60 anos) em 2013/2014. A demência foi considerada como a presença conjunta de escore baixo no Miniexame do Estado Mental (MEEM) e a incapacidade funcional moderada/grave nas atividades de vida diária (AVD). As variáveis independentes avaliadas foram: índice de massa corporal (IMC), perímetro da cintura (PC), índice de conicidade e relação cintura/estatura (RCEst). A regressão logística (bruta e ajustada) foi utilizada para identificar os fatores associados. A prevalência estimada de demência foi de 15,1%. Após ajustes para características sociodemográficas, estilo de vida e sintomas depressivos, a demência foi positivamente associada aos tercis superiores do IMC (OR: 2,32; IC95%: 1,26-4,25), PC (OR: 2,22; IC95%: 1,20-4,11) e RCEst. (OR: 2,30; IC95%: 1,19-4,43). De acordo com os resultados, tanto a obesidade quanto a gordura abdominal foram associados ao desfecho, sugerindo que o IMC, o PC e a RCEst. devam ser considerados na investigação dessa relação.


Abstract Objective To investigate the association between dementia and anthropometric indicators in the elderly from Florianópolis. Method This is a cross-sectional population-based survey performed with 1,197 elderly (≥ 60 years) in 2013/2014. Dementia was defined as the combined evidence of low MMSE (Mini-Mental State Examination) score and moderate/severe disability in the activities of daily living. The independent variables were body mass index (BMI), waist circumference (WC), conicity index and waist-to-height ratio (WHtR). Logistic regression (crude and adjusted) was performed to identify associated factors. Results Dementia prevalence was estimated at 15.1%. After adjustment for sociodemographic characteristics, lifestyle and depressive symptoms, dementia was positively associated with the upper tertiles of the BMI (OR: 2.32; CI95%: 1.26-4.25), WC (OR: 2.22; CI95%: 1.20-4.11) and WHtR (OR: 2.30; CI95%: 1.19-4.43). Conclusion Results have shown that both obesity and abdominal fat were associated with the outcome, suggesting that BMI, WC and WHtR should be considered in the investigation of this relationship.


Subject(s)
Humans , Male , Female , Aged , Aged, 80 and over , Dementia/epidemiology , Disability Evaluation , Abdominal Fat/metabolism , Obesity/epidemiology , Brazil/epidemiology , Activities of Daily Living , Aging , Body Mass Index , Anthropometry , Cross-Sectional Studies , Risk Factors , Waist Circumference , Waist-Height Ratio , Middle Aged
3.
Ciênc. Saúde Colet. (Impr.) ; 23(12): 4129-4142, Dec. 2018. tab
Article in Portuguese | LILACS | ID: biblio-974766

ABSTRACT

Resumo O objetivo deste estudo foi investigar a relação entre maus-tratos na família e excesso de peso, de gordura corporal e de gordura abdominal dos adolescentes da rede pública de ensino de município do Rio de Janeiro - Brasil. Trata-se de um estudo transversal que utiliza dados do Sistema de Vigilância de Fatores de Risco e Proteção à Saúde de Adolescentes, realizado em 2007, pelo município do Rio de Janeiro. A amostra foi composta por 1.628 escolares de 13 a 19 anos, de ambos os sexos, cursando o 9˚ ano do ensino fundamental. O excesso de peso, de gordura corporal e de gordura abdominal (desfechos) e os maus-tratos familiares (a agressão física e verbal) foram avaliados. A associação entre os maus-tratos e os desfechos foi realizada via modelos de regressão logística. Os maus-tratos apresentaram uma relação inversa com o excesso de peso e o de gordura para as meninas, mas somente a agressão física se associou significativamente com o excesso de peso (RC = 0,499; IC = 0,212-0,951). Já para os meninos, os resultados apontaram para o excesso de peso e de gordura mas sem significância estatística. Políticas de saúde devem considerar as diferenças existentes entre os gêneros no enfrentamento às experiências de violência que possam influenciar a saúde e o bem-estar do adolescente.


Abstract This study sought to investigate the relationship between domestic maltreatment and excess weight, body fat and abdominal fat among adolescents from the public schools in the city of Rio de Janeiro - Brazil. It involved a cross-sectional study using data from the Risk Factor Surveillance System and Protection of Health of Adolescents, held in 2007 by the municipality of Rio de Janeiro. The sample consisted of 1628 students aged 13 to 19 years, of both sexes, in the 9th year of school. Excess weight, body fat and abdominal fat (outcome variables) and domestic maltreatment (physical and verbal aggression) were evaluated. The association between domestic maltreatment and outcome variables was conducted via logistic regression models. Domestic maltreatment showed an inverse relationship to excess weight and fat for girls, but only physical aggression was significantly associated with excess weight (OR = 0.499, CI = 0.212 to 0.951). As for the boys, the results pointed to excess weight and fat but without statistical significance. Health policies must consider the differences between the genders in coping with experiences of violence that may influence the health and well-being of adolescents.


Subject(s)
Humans , Male , Female , Adolescent , Young Adult , Students/statistics & numerical data , Domestic Violence/statistics & numerical data , Adiposity , Obesity/epidemiology , Schools , Brazil/epidemiology , Sex Factors , Adipose Tissue/metabolism , Cross-Sectional Studies , Abdominal Fat/metabolism
4.
Ciênc. Saúde Colet. (Impr.) ; 23(11): 3913-3922, Oct. 2018. tab
Article in Portuguese | LILACS | ID: biblio-974733

ABSTRACT

Resumo Verificar a associação da incidência de diabetes melito (DM) e variáveis determinantes em coorte de idosos. Foram analisados idosos, participantes do Estudo SABE - Saúde, Bem-Estar e Envelhecimento, realizado no município de São Paulo, em 2000 (2.143 idosos), e em 2006 (1.115 idosos). As variáveis de estudo foram: DM; sociodemográficas (sexo, grupo etário, escolaridade, companhia no domicílio), estado nutricional (risco para obesidade, obesidade e gordura abdominal), clínicas (número de doenças referidas) e de estilo de vida (ingestão de bebida alcoólica, hábito de fumar, ingestão de carnes e de frutas, legumes e verduras). Utilizou-se regressão logística múltipla para verificar a associação entre variáveis de estudo, utilizando o programa Stata/SE 10.0. Em 2006, 914 idosos, sobreviventes de 2000, foram analisados, dos quais 72 constituíram os novos casos de DM (incidência de 7,7/1.000 pessoas-ano). Verificou-se associação (p < 0,000) entre incidência de DM com obesidade corporal (OR = 1,67; IC = 1,00-2,81) e gordura abdominal elevada (OR = 2,32; IC = 1,47-3,67). Concluiu-se que a obesidade corporal e a gordura abdominal elevada foram as variáveis que contribuem para o desenvolvimento da DM em idosos.


Abstract To verify the association between the incidence of DM and predictors, in a cohort of elderly people. Elderly people (≥ 60 y) were analyzed, of both genders, participants of the SABE Survey, carried out in the city of São Paulo, Brazil, in 2000 (n = 2,143) and 2006 (n = 1,115). The study variables were: DM; demographic (gender, age group, education level, companionship in the residence), nutritional status (risk for obesity, body obesity, and high abdominal fat), clinical (number of reported diseases), and lifestyle (alcohol consumption, smoking, intake of meat and fruit and vegetables). Multiple logistic regression (p < 0.05) was used to verify the association between variables of this study, with the statistical software Stata/SE 10.1. In 2006, 914 subjects, survivors of 2000, were analyzed and 72 were identified as new cases of DM (7.7/1.000 person-years). It was found that body obesity (OR = 1.67, CI = 1.00 to 2.81) and high abdominal fat (OR = 2.32, CI = 1.47 to 3.67) were predictors of the incidence of DM in the elderly (p < 0.000). It was concluded that body obesity and abdominal fat are the variables which contribute to the development of DM in the elderly.


Subject(s)
Humans , Male , Female , Aged , Nutritional Status , Diabetes Mellitus/epidemiology , Life Style , Obesity/epidemiology , Brazil/epidemiology , Logistic Models , Incidence , Surveys and Questionnaires , Cohort Studies , Abdominal Fat/metabolism , Independent Living , Middle Aged
5.
Arch. endocrinol. metab. (Online) ; 61(4): 354-360, July-Aug. 2017. tab, graf
Article in English | LILACS | ID: biblio-887572

ABSTRACT

ABSTRACT Objectives To analyze the role of moderate-to-vigorous physical activity (MVPA) in mediating the relationship between central adiposity and immune and metabolic profile in postmenopausal women. Materials and methods Cross-sectional study comprising 49 postmenopausal women (aged 59.26 ± 8.32 years) without regular physical exercise practice. Body composition was measured by dual-energy X-ray absorptiometry. Fasting blood samples were collected for assessment of nonesterified fatty acids, tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), adiponectin, insulin and estimation of insulin resistance (HOMA-IR). Physical activity level was assessed with an accelerometer (Actigraph GTX3x) and reported as a percentage of time spent in sedentary behavior and MVPA. All analyses were performed using the software SPSS 17.0, with a significance level set at 5%. Results Sedentary women had a positive relationship between trunk fat and IL-6 (rho = 0.471; p = 0.020), and trunk fat and HOMA-IR (rho = 0.418; p = 0.042). Adiponectin and fat mass (%) were only positively correlated in physically active women (rho = 0.441; p = 0.027). Physically active women with normal trunk fat values presented a 14.7% lower chance of having increased HOMA-IR levels (β [95%CI] = 0.147 [0.027; 0.811]). Conclusions The practice of sufficient levels of MVPA was a protective factor against immunometabolic disorders in postmenopausal women.


Subject(s)
Humans , Female , Middle Aged , Aged , Exercise , Interleukin-6/blood , Postmenopause/metabolism , Obesity, Abdominal/blood , Body Composition , Insulin Resistance , Absorptiometry, Photon/instrumentation , Cross-Sectional Studies , Fasting/blood , Postmenopause/blood , Abdominal Fat/metabolism , Adiponectin/blood , Adiposity , Fatty Acids/blood , Sedentary Behavior , Protective Factors , Follicle Stimulating Hormone/blood
6.
Int. j. cardiovasc. sci. (Impr.) ; 28(1): 9-15, jan.-fev. 2015. tab, graf
Article in English, Portuguese | LILACS | ID: lil-762184

ABSTRACT

Fundamentos: Estudos apontam que durante a lipemia pós-prandial (LPP) ocorre formação de radicais livres estimulando o endotélio a secretar citocinas que vão mediar a resposta inflamatória. O excesso de tecido adiposo, especialmente na região abdominal, correlaciona-se positivamente com os valores da proteína C-reativa (PCR). No entanto, pouco se sabe sobre a variação da PCR na fase inicial da LPP especialmente em indivíduos obesos. Objetivo: Verificar se existe variação na concentração plasmática da PCR na fase inicial da LPP em indivíduos com obesidade central. Métodos: Avaliados 40 indivíduos de ambos os sexos, sedentários, sem alteração do perfil lipídico de jejum e comcircunferência de cintura acima do ponto de corte considerado normal. Em jejum de 12 horas e três horas após a ingestão de 50g de gordura foi dosada a PCR. Resultados: Os valores da mediana da PCR de jejum e três horas após a ingestão de lipídeos foram, respectivamente: 0,6 mg/L (0,2-1,8 mg/L) e 0,4 mg/L (0,2-1,8 mg/L) (p=1,000). Conclusão: Neste estudo a fase inicial da LPP não induziu variação da concentração da PCR em indivíduos com obesidade central.


Background: Studies indicate that during postprandial lipemia (PPL), free radical formation occurs, stimulating the endothelium to secrete cytokines that mediate inflammatory responses. Excess adipose tissue, especially in the abdominal region, is positively correlated with C-reactive protein (CRP) values. However, little is known about CRP variations during the initial phase of PPL, especially among obese individuals. Objective: To determine if there are variations in CRP plasma concentrations among individuals with central obesity during the initial phase of PPL. Methods: This study assessed forty sedentary men and women with no alterations to fasting lipid profiles and waist circumferences above the normal cut off point, measuring their CRP levels after fasting for twelve hours and three hours after ingesting 50g of fat. Results: The mean CRP values after fasting and three hours after lipids intake were 0.6 mg/L (0.2 to 1.8 mg/L) and 0.4 mg/L(0.2 to 1.8mg/L) (p=1.000) respectively. Conclusion: In this study, the initial phase of PPL did not present any variations in CRP concentrations among subjects with central obesity.


Subject(s)
Humans , Male , Female , Young Adult , C-Reactive Protein , Lipids/blood , Obesity, Abdominal , Postprandial Period , Body Mass Index , Abdominal Fat/metabolism , Inflammation , Lipoproteins/blood , Prospective Studies , Sex Factors , Triglycerides/blood , Waist Circumference
7.
Rio de Janeiro; s.n; 2012. 43 p.
Thesis in Portuguese | LILACS | ID: lil-665412

ABSTRACT

A baixa relação de ômega-6/ômega-3 esta relacionada com propriedades benéficas para a saúde óssea. No entanto, a dieta rica nestes compostos pode levar a obesidade. Adipócitos e osteoblastos derivam de células progenitoras comuns, e o consumo de óleo de canola pode ter ação adipogênica e osteogênica. Nosso objetivo foi avaliar a adiposidade abdominal, insulina e estrutura óssea em ratos tratados com dieta contendo baixa relação ômega-6/ômega-3, proveniente do óleo de canola. Após desmame, os ratos foram divididos em grupos alimentados com dieta normocalórica: Controle (S) e experimental (C), contendo 7m1/100g de óleo de soja ou de canola e grupos tratados com dieta rica em lipídios: Controle (7S) ou hiperlipídico contendo 19m1/100g de óleo de soja (19S) ou de canola (19C), até completarem 60 dias de idade. Os dados foram significativos com P<0,05. No primeiro modelo, o grupo C apresentou redução de: Massa e área do adipócito intra-abdominal; Colesterol; Insulina; Densidade mineral (DMO) e massa óssea total e na coluna vertebral; Massa do fêmur; Espessura da diáfise; DMO do fêmur e das vértebras lombares e radiodensidade da cabeça do fêmur. No segundo modelo, os grupos 19S e 19C apresentaram maior ingestão calórica, densidade corporal, massa de gordura intra-abdominal, e maior massa e comprimento do fêmur e da coluna lombar. O grupo 19S apresentou maior área e menor número de adipócitos da região retroperitoneal. Glicose e a insulina foram aumentadas no grupo 19C vs. 7S. A tomografia do fêmur revelou maior radiodensidade na região proximal e da coluna lombar, no grupo 19C. Sugerimos que a quantidade e o tipo de lipídio consumido, após o desmame, induzem não somente o desenvolvimento corporal e os depósitos de gordura, além de afetarem a resistência insulínica e a saúde óssea


The lower ratio of omega-6 to omega-3 polyunsaturated fatty acids is associated with healthy bone properties. However, fat diets can induce obesity. Adipocytes and osteoblasts derive from a common progenitor, and canola oil intake may have an adipogenic and osteogenic effect. Our objective was to evaluate the intra-abdominal adiposity, insulin and bone growth in rats fed diet containing lower ratio of omega-6 to omega-3, provided in canola oil. After weaning, rats were divided into groups fed with normocaloric diet: control (S) and experimental (C), containing 7 m1/100g soybean or canola oil, respectively and groups fed with fat diet: control (7S) or fat diets containing 19 m1/100g soybean oil (19S) or canola oil (19C), until they 60 days old. Differences were considered significant with P<0,05. In normocaloric diet model, C group showed a significant reduction in: Intra-abdominal fat mass; Area of adipocyte; Cholesterol; Insulin; Total body and spine bone mineral content and bone area; Femur mass; Width of the diaphysis; Femur and lumbar vertebrae bone mineral density and radiodensity of femoral head. To high-fat diet model, 19S and 19C groups showed higher energy intake, body density growth, intra-abdominal fat mass and higher femur mass and, lumbar vertebrae mass and length. 19S showed higher area and lower number of retroperitoneal adipocytes. Glucose and insulin were significantly increased in 19C compared to 7S group. Computed tomography of femur revealed higher radiodensity in proximal femoral epiphysis and lumbar vertebrae of 19C. We suggest that the amount and the source of fat used in the diet, after weaning, induce not only the body and fat depots growth, besides affecting the insulin resistance and the bone health


Subject(s)
Animals , Rats , Diet, High-Fat , Obesity, Abdominal/diet therapy , Obesity, Abdominal/etiology , Soybean Oil/administration & dosage , Plant Oils/administration & dosage , Adipocytes , Absorptiometry, Photon/methods , Bone Density/physiology , Bone Development/physiology , Femur/growth & development , Femur , Abdominal Fat/metabolism
8.
Journal of Preventive Medicine and Public Health ; : 316-322, 2012.
Article in English | WPRIM | ID: wpr-207810

ABSTRACT

OBJECTIVES: Abdominal obesity increases mortality and morbidity from cardiovascular disease and there is a possibility that smoking effects obesity. However, previous studies concerning the effects of smoking on obesity are inconsistent. The objective of this study was to examine whether smoking is positively related to abdominal obesity in men with type 2 diabetes. METHODS: Subjects consisted of 2197 type 2 diabetic patients who visited Huh's Diabetes Center from 2003 to 2009. Indices of abdominal obesity were defined as visceral fat thickness (VFT) measured by ultrasonography and waist circumference (WC). Overall obesity was defined as body mass index (BMI). RESULTS: Statistically significant differences in WC and VFT by smoking status were identified. However, there was no statistical difference in BMI according to smoking status. Means of WC and VFT were not significantly higher in heavy smokers and lower in mild smokers. Compared to nonsmokers, the BMI confounder adjusted odds ratio and 95% confidence interval for VFT in ex-smokers and current-smokers were 1.70 (1.21 to 2.39) and 1.86 (1.27 to 2.73), respectively. CONCLUSIONS: Smoking status was positively associated with abdominal obesity in type 2 diabetic patients.


Subject(s)
Adult , Aged , Aged, 80 and over , Humans , Male , Middle Aged , Abdominal Fat/metabolism , Body Mass Index , Diabetes Mellitus, Type 2/complications , Obesity/etiology , Smoking/adverse effects , Waist Circumference
9.
RBM rev. bras. med ; 68(3)mar. 2011.
Article in Portuguese | LILACS | ID: lil-586159

ABSTRACT

Objetivo: Investigou-se associação entre baixa estatura (BE) e fatores de risco cardiovascular em mulheres de uma comunidade de baixa renda.Material e método: Estudo de delineamento transversal, para cálculo da amostra utilizou-se prevalência de obesidade abdominal de 20,5% (RCQ > 0,85) com margem de erro de 5% e IC95%. A amostra final foi de 160 mulheres, as quais foram categorizadas em quartis de estatura. Foram analisados parâmetros sociodemográficos, comportamentais, antropométricos e bioquímicos (colesterol total, HDL e LDL colesterol, triglicérides, ácido úrico, proteína C reativa ultra sensível (PCRus), fibrinogênio, glicemia, insulina, HOMA%B, HOMAIR).Resultados: As mulheres de BE apresentaram menor nível de escolaridade (p 0,01), maior prevalência de hipertensão (RP 11,0 IC 95% 1,47-61,8) e de sobrepeso/obesidade (RP 1,56 IC 0,70-1,41). Na análise multivariada ajustada para idade, IMC e RCQ, a BE associou-se inversa e significativa com PCRus, glicemia, insulinemia, resistência à insulina e com uma menor função das células beta pancreáticas. A prevalência de síndrome metabólica foi superior nas mulheres baixas quando comparadas às mulheres com estatura normal.Conclusões: Concluiu-se que as mulheres de BE apresentaram maior prevalência de fatores de risco cardiovascular quando comparado às mulheres situadas no quartil superior de estatura.


Subject(s)
Humans , Female , Adult , Body Height/ethnology , Body Height/physiology , Risk Factors , Abdominal Fat/metabolism
10.
Radiol. bras ; 42(6): 353-357, nov.-dez. 2009. ilus, graf
Article in English, Portuguese | LILACS | ID: lil-536415

ABSTRACT

OBJETIVO: O objetivo deste estudo é avaliar a variabilidade interobservador do método ultrassonográfico para medida da gordura subcutânea, visceral e perirrenal por meio de técnica padronizada. MATERIAIS E MÉTODOS: Foram avaliados 50 pacientes entre novembro de 2006 e janeiro de 2007. A medida da espessura subcutânea foi realizada com transdutor linear de 7,5 MHz posicionado transversalmente a 1 cm acima da cicatriz umbilical. Para a gordura visceral foi utilizado transdutor de 3,5 MHz posicionado 1 cm acima da cicatriz umbilical, considerando-se a medida entre a face interna do músculo reto abdominal e a parede posterior da aorta na linha média do abdome. A gordura perirrenal foi medida no terço médio do rim direito, com transdutor posicionado na linha axilar média. RESULTADOS: A reprodutibilidade interobservador foi analisada por meio do teste t de Student, com significância de 95 por cento. Não houve diferença significativa entre as médias das medidas das gorduras subcutânea, visceral e perirrenal, com p = 0,7141, 0,7286 e 0,6368, respectivamente. As médias encontradas, com seus respectivos desvios-padrão, foram: 2,64 ± 1,37 para a espessura subcutânea, 6,84 ± 2,38 para a espessura visceral e 4,89 ± 2,6 para a espessura perirrenal. CONCLUSÃO: A ultrassonografia apresentou boa reprodutibilidade interobservador para avaliação da gordura abdominal por meio das medidas das espessuras subcutânea, visceral e perirrenal.


OBJECTIVE: The purpose of this study was to evaluate the interobserver variability of ultrasound in the measurement of subcutaneous, visceral and perirenal fat through standard technique. MATERIALS AND METHODS: From November 2006 to January 2007, 50 patients were evaluated. The subcutaneous fat thickness was measured with a 7.5 MHz linear transducer transversely positioned 1 cm above the umbilical scar. For the visceral fat, a 3.5 MHz transducer was also positioned 1 cm above the umbilical scar, considering the distance between the internal surface of the abdominal rectus muscle and the posterior aortic wall in the abdominal midline. The perirenal fat was measured in the middle third of the right kidney, with the transducer positioned at the axillary midline. RESULTS: The t-Student test was utilized to analyze the interobserver reproducibility with significance level of 95 percent. No statistically significant difference was observed among mean values for subcutaneous, visceral and perirenal fat (p = 0.7141, 0.7286 and 0.6368, respectively). Mean and standard deviation corresponded to 2.64 ± 1.37 for subcutaneous thickness, 6.84 ± 2.38 for visceral fat, and 4.89 ± 2.6 for perirenal fat. CONCLUSION: Ultrasound presented a good interobserver reproducibility in the evaluation of abdominal fat based on measurement of subcutaneous, visceral and perirenal fat as parameters.


Subject(s)
Humans , Male , Female , Child , Adolescent , Young Adult , Abdominal Fat/anatomy & histology , Subcutaneous Fat, Abdominal/anatomy & histology , Metabolic Syndrome , Subcutaneous Fat , Anthropometry , Abdominal Fat/metabolism , Abdominal Fat , Viscera
11.
Arq. bras. endocrinol. metab ; 53(6): 755-759, ago. 2009. graf, tab
Article in Portuguese | LILACS | ID: lil-529954

ABSTRACT

OBJETIVO: A presente pesquisa avaliou a relação entre a taxa metabólica de repouso (TMR) e a composição corporal de mulheres na pós-menopausa. MÉTODOS: Participaram 30 mulheres inativas fisicamente, com média de idade 54,33 ± 5,20 anos. O consumo de oxigênio foi avaliado por meio de calorimetria indireta após 12 horas em jejum e os valores obtidos foram calculados segundo a equação de Weir. A composição corporal foi obtida pelo método de dobras cutâneas e a medida da circunferência de cintura (CC) foi utilizada para avaliar a gordura abdominal. Utilizou-se a correlação linear de Pearson para estabelecer as correlações entre as variáveis. RESULTADOS: Foram encontradas correlações significantes da TMR com a CC (r = 0,42) e com a massa magra (MM) (r = 0,48). CONCLUSÕES: As variáveis da composição corporal que podem estar envolvidas na determinação da TMR são a MM e a CC.


OBJECTIVE: The present study evaluated the relationship between resting metabolic rate (RMR) and body composition of postmenopausal women. METHODS: Thirty physically inactive women participated in the study, and their age average was 54,33 ± 5,20 years old. Oxygen consumption was measured by indirect calorimetry after 12 hours of fasting and the values were calculated according to the equation of Weir. Body composition was obtained by the method of skinfolds and the measurement of waist circumference (WC) was used to assess abdominal fat. The linear correlation of Pearson was used to establish correlations between the variables. RESULTS: We found significant correlations of TMR with the CC (0.42) and the lean mass (LM) (r = 0.48). CONCLUSIONS: The variables of body composition that can be involved in the determination of the RMR are LM and WC.


Subject(s)
Female , Humans , Middle Aged , Abdominal Fat/metabolism , Basal Metabolism/physiology , Body Composition/physiology , Postmenopause/metabolism , Body Mass Index , Cross-Sectional Studies , Waist Circumference/physiology
12.
Rev. bras. ativ. fís. saúde ; 13(2)maio-agos. 2008.
Article in Portuguese | LILACS | ID: lil-536665

ABSTRACT

The objective of the present study was to develope and to validate equations based on skinfold thickness for the estimation of percent body fat (%BF) in HIV/AIDS subjects using dual energy X-ray absorptiometry (DEXA) and computed tomography of abdomen (CTA) as the gold standards. The sample included 15 adult Brazilian HIV/AIDS subjects (10 men and 5 women). Mean age was 36.9 years (SD 8.2) and mean BF by DEXA was 18.2 (SD 9.5). The estimation of %BF was done using linear regression models, and the independent variables were the sum of one to seven skinfold thickness. The skinfold thickness was compared with DEXA and CTA. The Durnin & Womersley equation was also tested. The best equation for males was [%BF = 3.385 + 0.279 * (axillary + subscapular); r2=0.83] and for females was [%BF = -24.323 + 0.736 * (suprailiac + abdominal + medial calf); r2=0.81]. The total error of the estimate of %BF in HIV/AIDS was <3.5%, the means were not different between males and females from the values measured by DEXA, and the estimated values were highly correlated with DEXA and CTA. The 95% limits of agreement between HIVE and DEXA by the Bland-Altman method were good. The Durnin & Womersley equation was also tested, and the values showed significant differences in the means (males) and the total error was >3.5% for males and females in the comparison with DEXA. The HIV/AIDS equation complied with all the validation criteria. We recommended this equation to be tested in larger samples for estimating %BF among HIV/AIDS subjects.


Subject(s)
Humans , Male , Female , Adult , Anthropometry/methods , Body Composition , Abdominal Fat/metabolism , HIV , Skinfold Thickness , Tomography , Continuity of Patient Care/statistics & numerical data
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