RESUMO
BACKGROUND: Indigenous Australians have a high prevalence of obesity and an unacceptably high rate of cardiovascular disease. METHODS: We conducted a cross-sectional analysis of 93 high-risk indigenous Australians to assess how strongly three anthropometric measures correlated with known cardiovascular risk factors. RESULTS: Both waist circumference and body mass index were strongly associated with important risk factors. The waist : hip ratio was less useful. Waist circumference was the only measure that significantly correlated with the urine albumin creatinine ratio (rho=0.14; P=0.04). CONCLUSION: Measuring the waist circumference is a cheap, effective way of monitoring cardiovascular risk.
Assuntos
Antropometria/métodos , Doenças Cardiovasculares/epidemiologia , Havaiano Nativo ou Outro Ilhéu do Pacífico , Obesidade/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Austrália/epidemiologia , Índice de Massa Corporal , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Estatísticas não ParamétricasRESUMO
Anthropometric markers of obesity are simple means that may be used as markers of cardiovascular risk and insulin resistance. We compare body mass index, waist circumference and waist hip ratio as tools to screen for insulin resistance in 81 overweight Indigenous Australians using ROC curve analysis. Body mass index and waist circumference emerged as better predictors of insulin resistance compared with waist hip ratio.
Assuntos
Antropometria , Resistência à Insulina , Obesidade/diagnóstico , Obesidade/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Austrália/epidemiologia , Biomarcadores/sangue , Glicemia/metabolismo , Índice de Massa Corporal , Peptídeo C/sangue , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/fisiopatologia , Humanos , Pessoa de Meia-Idade , Obesidade/epidemiologia , Valor Preditivo dos Testes , Curva ROC , Fatores de Risco , Relação Cintura-QuadrilRESUMO
We aim to examine the short-term efficacy of a lifestyle intervention programme on cardiovascular risk factors in overweight urban Indigenous Australians with and without type 2 diabetes mellitus. One hundred and one urban Indigenous Australians in Queensland voluntarily participated in a culturally appropriate lifestyle intervention programme based on improving physical activity and dietary intake; 44 had type 2 diabetes, 11 had impaired fasting glucose and 46 were euglycaemic. Efficacy of the intervention on biochemical and physical markers of cardiovascular outcome will be monitored over 2 years. Diabetic subjects were overweight with good but suboptimal control of cardiovascular risk factors (mean systolic blood pressure 132 mmHg, diastolic blood pressure 85 mmHg, LDL cholesterol 2.8mM and urine albumin to creatinine ratio 10.8) at baseline. At the 6 months follow up, there were significant reductions in waist circumference (3.1cm, P=0.01) and diastolic blood pressure (4.6 mmHg, P=0.01). Although modest, these changes may improve clinical outcome if sustained.
