Atividade física na prevenção das comorbidades cardiovasculares em mulheres obesas: quanto é suficiente? / Physical activity in the prevention of cardiovascular comorbidities in obese women: how much is enough?

O objetivo do estudo foi analisar a intensidade e duração de atividade física suficiente para discriminar a ausência de comorbidades cardiovasculares em mulheres obesas. O desenho foi de corte transversal com amostra constituída por 387 mulheres obesas com faixa etária de 21 a 75 anos e IMC = 31,2 kg/m². Foram construídas diversas curvas Receiver Operating Characteristic (ROC) e comparadas às áreas sob as mesmas entre diferentes intensidades de atividade física (caminhada, moderada e vigorosa) e ausência das comorbidades cardiovasculares. Verificou-se também a sensibilidade e especificidade para identificar o melhor ponto de corte para a duração da atividade física mais apropriada para predizer a ausência das comorbidades cardiovasculares. Foi utilizado o intervalo de confiança a 95%. Entre as diferentes intensidades de atividade física as maiores áreas sob a curva ROC foram encontradas na caminhada: 0,68 (0,62-0,73) com ponto de corte para duração de 150 min/semana e na atividade moderada: 0,64 (0,58-0,70), com ponto de corte para duração de 150 min/semana. A prática da atividade física deve ser sugerida para mulheres obesas na intensidade e duração suficientes visando contribuir para a ausência de comorbidades cardiovasculares nesta população.

The aim of this study was to analyze the intensity and duration of physical activity sufficient to discriminate the absence of cardiovascular comorbidities in obese women. This was a cross-sectional study, with a sample of 387 obese women, aged 21 to 75 years with body mass index = 31,2 kg/m². Different curves Receiver Operating Characteristic (ROC) were constructed and compared to areas under the same among different intensities of physical activity (walking, moderate and vigorous) and the absence of cardiovascular comorbidities. We also observed the sensitivity and specificity to identify the best cutoff for the duration of physical activity most appropriate for predicting the absence of cardiovascular comorbidities. The confidence interval at 95% was used. Among the different intensities of physical activity the major areas on the ROC curve was found in walking: 0,68 (0,62-0,73) with cutoff point for duration of 150 min/week and moderate activity: 0,64(0,58-0,70) with cutoff point for duration of 150 min/week. The physical activity should be suggested for obese women in the intensity and duration sufficient to contribute to the absence of cardiovascular comorbidities in this population.

Usefulness of Ankle Brachial Index to Predict the Extent of Coronary Stenosis / 中国康复理论与实践

@#ObjectiveTo examine the relationship between ankle brachial index (ABI) and the extent of coronary stenosis and evaluate the usefulness of ABI to predict the extent of coronary stenosis in old patients.Methods118 patients with coronary angiography were examined by ABI and hemostatic factors evaluation in addition to history collection.ResultsABI was inversely and significantly associated with Gensini score. ABI reduced significantly (P<0.001) in the patients with 3-vessel or left main coronary artery disease (CAD). But there were no significant differences in ABI among the patients with no CAD, 1-vessel or 2-vessel CAD. The corresponding area under the ROC curve was 0.75±0.045, with 95% CI=0.67～0.84 (P<0.001) in ABI in 3-vessel or left main CAD. When ABI≤0.9, it had a relatively high specificity (89.1%) and sensitivity (55.6%) for predicting the presence of 3-vessel disease or left main CAD.ConclusionIn the old patients, ABI is inversely and significantly associated with the extent of coronary stenosis, and ABI≤0.9 has a relatively high specificity and sensitivity for predicting the presence of 3-vessel or left main CAD.