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The aim of this study was to test the hypothesis of differences in performance including differences in ST-T wave changes between healthy men and women submitted to an exercise stress test. Two hundred (45.4%) men and 241 (54.6%) women (mean age: 38.7 +/- 11.0 years) were submitted to an exercise stress test. Physiologic and electrocardiographic variables were compared by the Student t-test and the chi-square test. To test the hypothesis of differences in ST-segment changes, data were ranked with functional models based on weighted least squares. To evaluate the influence of gender and age on the diagnosis of ST-segment abnormality, a logistic model was adjusted; P &lt; 0.05 was considered to be significant. Rate-pressure product, duration of exercise and estimated functional capacity were higher in men (P &lt; 0.05). Sixteen (6.7%) women and 9 (4.5%) men demonstrated ST-segment upslope &gt;or=0.15 mV or downslope &gt;or=0.10 mV; the difference was not statistically significant. Age increase of one year added 4% to the chance of upsloping of segment ST &gt;or=0.15 mV or downsloping of segment ST &gt;or=0.1 mV (P = 0.03; risk ratio = 1.040, 95% confidence interval (CI) = 1.002-1.080). Heart rate recovery was higher in women (P &lt; 0.05). The chance of women showing an increase of systolic blood pressure &lt;or=30 mmHg was 85% higher (P = 0.01; risk ratio = 1.85, 95%CI = 1.1-3.05). No significant difference in the frequency of ST-T wave changes was observed between men and women. Other differences may be related to different physical conditioning.

Treadmill exercise testing of asymptomatic men and women without evidence of heart disease