Table 2.
Differences in baseline ECG parameters between non-obese and obese participants with and without metabolic syndrome
| Non-obese (84%) | Obese (16%) | ||||||
|---|---|---|---|---|---|---|---|
| ECG parameter | No MetS (83%) | MetS (17%) | Diff (95% CI) | No MetS (n = 36%) | MetS (64%) | Diff (95% CI) | p value int |
| Heart rate (bpm) | 62.4 (0.2) | 67.7 (0.5) | 5.0 (3.9, 6.2) | 65.8 (0.3) | 68.8 (0.3) | 3.1 (2.2, 4.0) | 0.006 |
| P duration (ms) | 110.9 (0.4) | 114.3 (0.6) | 2.3 (0.9, 3.6) | 115.2 (0.5) | 115.8 (0.4) | −0.6 (−1.8, 0.6) | 0.002 |
| QRS duration (ms) | 92.3 (0.3) | 94.5 (0.5) | 0.8 (−0.4, 2.0) | 92.9 (0.4) | 95.0 (0.3) | 0.7 (−0.3, 1.7) | 0.985 |
| PR interval (ms) | 162.1 (0.6) | 166.3 (1.0) | 2.4 (−0.1, 4.8) | 163.9 (0.8) | 164.8 (0.6) | −1.1 (−3.0, 0.9) | 0.029 |
| QTc interval (ms) | 413.7 (0.6) | 414.7 (1.0) | 1.2 (−1.0, 3.4) | 416.1 (0.9) | 418.2 (0.6) | 2.2 (0.2, 4.2) | 0.373 |
| P axis (°) | 49.0 (0.7) | 44.2 (1.0) | −4.3 (−6.8, −1.9) | 40.4 (0.8) | 40.6 (0.6) | −0.2 (−2.3, 1.9) | 0.001 |
| T axis (°) | 39.4 (0.6) | 36.2 (1.1) | −2.8 (−5.5, −0.1) | 32.3 (0.8) | 34.4 (0.7) | 2.0 (−0.2, 4.2) | 0.001 |
| QRS axis (°) | 39.8 (0.8) | 23.0 (1.4) | −13.3 (−16.6, −10.1) | 23.2 (1.0) | 18.4 (0.8) | −2.9 (−5.3, −0.5) | <0.001 |
| Small Q-wave (%) | 5.2 | 9.1 | 2.8 (0.2, 5.4) | 8.1 | 9.3 | 0.7 (−1.7, 3.0) | 0.121 |
Data are presented as mean (se) or percentage
Results were based on weighted linear regression analysis adjusted for age, sex, ethnicity, smoking, alcohol intake, education level, physical activity and statin use
MetS metabolic syndrome