Table 3 ECG patterns among athletes and controls
From: Electrocardiographic pattern of apparently healthy African adolescent athletes in Nigeria
ECG variables | Athletes Mean ± SD | Controls Mean ± SD | Cohen’s d | t test | P value |
|---|---|---|---|---|---|
Heart rate (beats/min) | 80.16 ± 14.021 | 84.12 ± 14.100 | 0.282 | −2.668 | 0.008 |
PR Interval (msecs) | 158.17 ± 34.68 | 148.72 ± 25.33 | 0.311 | 2.951 | 0.003 |
QTc interval (msecs) | 387.33 ± 27.69 | 387.60 ± 38.79 | 0.008 | −0.075 | 0.940 |
T wave amplitude V5 (mm) | 4.52 ± 2.21 | 4.09 ± 1.55 | 0.225 | 2.128 | 0.034 |
T wave amplitude V6 (mm) | 3.44 ± 1.63 | 3.22 ± 1.39 | 0.145 | 1.374 | 0.170 |
P wave amplitude (mm) | 1.60 ± 0.57 | 1.53 ± .490 | 0.132 | 1.197 | 0.232 |
P wave duration (mm) | 80.39 ± 8.99 | 79.78 ± 7.32 | 0.074 | 0.707 | 0.480 |
R wave in V1 (mm) | 4.40 ± 2.64 | 4.59 ± 2.38 | 0.075 | −0.722 | 0.471 |
S wave in V1 (mm) | 13.11 ± 6.09 | 13.30 ± 5.83 | 0.032 | −0.301 | 0.764 |
R wave in V2 (mm) | 9.19 ± 5.10 | 8.89 ± 3.94 | 0.065 | 0.613 | 0.541 |
S wave in V2 (mm) | 16.83 ± 6.91 | 16.25 ± 6.35 | 0.087 | 0.834 | 0.405 |
R wave in V5 (mm) | 19.16 ± 7.56 | 17.81 ± 5.70 | 0.201 | 1.906 | 0.058 |
S wave in V5 (mm) | 2.46 ± 2.87 | 1.96 ± 2.38 | 0.189 | 1.791 | 0.074 |
R wave in V6 (mm) | 14.77 ± 5.73 | 13.4167 ± 4.53 | 0.261 | 2.485 | 0.013 |
S wave in V6 (mm) | 0.91 ± 1.16 | 0.78 ± 1.23 | 0.108 | 1.101 | 0.272 |
QRS duration (msecs) | 81.28 ± 9.43 | 79.53 ± 8.38 | 0.196 | 1.867 | 0.063 |