IJCS | Volume 32, Nº5, September/October 2019

475 Table 1 - Characteristics of the study population (n = 426) Variables Age (mean and standard deviation) 31 (18) years Age range, n (%) 21-30 years 206 (48.4%) 31-40 years 105 (24.6%) 41-50 years 56 (13.1%) 51-60 years 41 (9.6%) 61-70 years 12 (2.8%) > 70 years 6 (1.4%) Sex, n (%) Female 232 (54.5%) Male 194 (45.5%) Occupation, n (%) Physical educator 14 (3.3%) Nurse 55 (12.9%) Student 127 (29.8%) Cardiologist physician 106 (24.9%) Non-cardiologist physician 55 (12.9%) Dietitian 2 (0.5%) Others 67 (15.7%) Body mass index (kg/m 2 ) (mean and standard deviation) 24.7 (5.1) Body mass index classification (%) Underweight 15 (3.5%) Normal weight 213 (50%) Overweight 149 (35%) Class I obesity 32 (7.5%) Class I obesity 13 (3.1%) Class I obesity 4 (0.9%) Heart rate (bpm) (mean and standard deviation) 79.5 (20) Meira et al. Talk the talk and walk the walk! Int J Cardiovasc Sci. 2019;32(5):473-480 Original Article who answered the question correctly and those who gave a wrong answer. The sample size was defined for a percentage of correct answers of 30% and 50% in inactive and highly active groups, respectively, with an alpha error of 50%, power of 80%; 91 individuals in each quartile, or a total of 364 volunteers would be needed. Our final sample was composed of 14 physical educators (3.3%), 55 nurses (12.9%), 127 students (29.8%), 106 cardiologists (24.9%), 55 non-cardiologist physicians (12.9%), 2 dietitians (0.5%) and 67 (15.7%) other health care professionals. A multivariate model (logistic regression) was used, with a correct answer to the question about physical activity recommendations as dependent variable, and including variables with alpha errors lower than 5% in the univariate analysis. Continuous variables were expressed as mean and standard deviation or median and interquartile range, and analyzed using the Student’s t test or theMann-Whitney U test, depending on normality of data distribution. Categorical variables were expressed as percentage and analyzed by the chi-square test or Fisher’s exact test. Statistical analysis was performed using the SPSS software for Windows, version 22.0. The level of significance was set at 5%. The study was approved by the ethics committee of Casa de Saúde São José (CAAE 71943817.4.000.5664; approval number 2.404.247), and conducted according to the Helsinki Declaration. Results Of a total of 2,652 attendees of the conference, 426 (16.1%) were interviewed; 45.5% of these were men, median age of 31 [18] years. One hundred sixty-one (37.8%) were physicians, 106 cardiologists (24.5% of participants and 65.8% of physicians). Of the 426 volunteers, 190 (44.6%) answered the question about physical exercise correctly; 38.1% of themwere non-physicians, 52.7%were non-cardiologist physicians and 56.6% were cardiologists (p = 0.002). With respect to physical activity level, median PA-I was 3.75 (4.62) (p < 0.001); 21.8% of them were classified as inactive, 15% lightly active, 34.7% moderately active and 28.4% highly active (p = 0.003). Characteristics of the study population are described in Table 1. Median VO 2 max was 40.3 (8.54) mL/kg.min and aerobic conditioning measured by percentage of VO 2 , predicted by age and sex was 89.4 (1.2)% (median). Sixty-nine volunteers (16.2%) showed poor abnormal aerobic conditioning (< 80% of predicted). Among inactive participants, 30.1% answered the question about physical activity correctly, whereas 52.9% of highly active answered it correctly (p < 0.001) (Figure 1). PA-I was 2.37 (3.75) and 3.75 (4.05) in subjects who gave correct and incorrect answers, respectively (p < 0.001). Individuals who answered the question