IJCS | Volume 32, Nº1, January/ February 2019

23 Table 2 - Echocardiographic and ergometric results Variable n Mean Median Q1 Q3 SD *p value Maximum heart rate 381 128.2 129 118 140 20.7 Distance 377 0.418 0.410 0.290 0.530 0.198 VO 2 max 381 23.7 23.4 16.9 29.1 8.1 MET 381 6.80 6.76 4.84 8.35 2.36 Left ventricle mass 381 159.4 152 123 181 50.2 Left ventricle/SA 381 91.1 85 74 103 33.1 Left ventricle EF 381 69.5 70 67 73 6.3 Left atrium 381 37.1 36 34 40 5.6 VO 2 max female 205 21.0 20.9 16.7 25.1 7.3 VO 2 max male 176 26.7 25.9 20.9 32.2 8.0 < 0.001 METs female 205 6.1 6.0 4.8 7.2 2.1 METs male 176 7.7 7.5 6.0 9.2 2.3 < 0.001 * Student’s t- test for independent samples, p < 0.05. VO 2 max: maximum oxygen consumption; MET: metabolic equivalent; SA: surface area; EF: ejection fraction. Baroncini et al. Ergometric test and echocardiography in the elderly Int J Cardiovasc Sci. 2019;32(1)19-27 Original Article Table 3 - Correlation of heart rate (HR) and distance covered in exercise stress ECG test with echocardiographic data, age, surface area (SA) and body mass index (BMI) of patients Variable n Spearman coefficient p value HR max x left ventricle mass 381 -0.09 0.082 HR max x left ventricle mass/ SA 381 -0.03 0.556 HR max x age 381 -0.23 < 0.001 HR max x BMI 380 -0.06 0.249 HR max x left ventricle ejection fraction 381 0.13 0.010 HR max x left atrium 381 -0.05 0.325 Distance x left ventricle mass 377 0.03 0.520 Distance x left ventricle mass/ SA 377 0.08 0.101 Distance x age 377 -0.12 0.021 Distance x BMI 376 -0.17 0.001 Distance x left ventricle ejection fraction 377 0.04 0.450 Distance x left atrium 377 0.01 0.833 Table 4 - Correlation of metabolic equivalent (MET) and maximum oxygen consumption (VO 2 max) with echocardiographic data, age, body mass index (BMI) and surface area (SA) of patients Variable N Spearman coefficient p value MET x left ventricle 381 0.03 0.581 MET x left ventricle/SA 381 0.06 0.217 MET x age 381 -0.21 < 0.001 MET x BMI 380 -0.13 0.011 MET x ejection fraction 381 0.05 0.327 MET x left atrium 381 0.00 0.959 VO 2 max x left ventricular mass 381 0.04 0.488 VO 2 max x left ventricular mass/SA 381 0.07 0.167 VO 2 max x age 381 -0.19 < 0.001 VO 2 max x BMI 381 -0.16 0.002