Table 1.
Subject characteristics (BSA = body surface area, BMI = body mass index, HR = heart rate, lead I = Einthoven lead I, lead II = Einthoven lead II, lead III = Einthoven lead III, Wr = pseudo-unipolar recording corresponding to standard lead V1, Wm = pseudo-unipolar recording corresponding to standard lead V4, Wl = pseudo-unipolar recording corresponding to standard lead V6). P values were obtained by T-Test and ANOVA; probability limit 95%.
| All | Male | Female | p | |
|---|---|---|---|---|
| Size (cm) | 169 ± 25 | 170 ± 45 | 169 ± 6 | 0.910 |
| Weight (kg) | 70 ± 11 | 78 ± 11 | 66 ± 9 | <0.001 |
| BSA (m2) | 1.78 ± 0.29 | 1.86 ± 0.47 | 1.75 ± 0.14 | 0.205 |
| BMI (kg/m2) | 23.2 ± 2.7 | 23.8 ± 2.6 | 23.0 ± 2.7 | 0.333 |
| Age (years) | 36 ± 11 | 36 ± 10 | 37 ± 12 | 0.769 |
| QRS axis (°) | 54 ± 30 | 47 ± 31 | 57 ± 29 | 0.260 |
| HR 12 lead ECG (bpm) | 71 ± 13 | 72 ± 11 | 72 ± 12 | 0.896 |
| HR lead I (bpm) | 71 ± 10 | 71 ± 9 | 71 ± 11 | 0.900 |
| HR lead II (bpm) | 71 ± 10 | 71 ± 9 | 72 ± 11 | 0.758 |
| HR lead III (bpm) | 71 ± 9 | 72 ± 8 | 71 ± 10 | 0.830 |
| HR Wr (bpm) | 71 ± 10 | 71 ± 8 | 71 ± 10 | 0.982 |
| HR Wm (bpm) | 72 ± 10 | 72 ± 9 | 72 ± 11 | 0.993 |
| HR Wl (bpm) | 72 ± 10 | 73 ± 9 | 72 ± 12 | 0.948 |