Table 5 Comparison of ECG data in academy footballers according to ethnicity
From: Right ventricular assessment of the adolescent footballer’s heart
BF | WF | MF | Whole group | P | |
|---|---|---|---|---|---|
Heart rate bpm (n) | 59 ± 10 (162) | 61 ± 11 (791) | 61 ± 10 (95) | 61 ± 11 (1048) | 0.014* |
pRBBB, % (n) | 1.2 (166) | 5.6 (826) | 3.1 (95) | 4.7 (1087) | 0.04*** |
RBBB, % (n) | 0 (166) | 0.5 (826) | 2.1 (95) | 0.6 (1087) | 0.08 |
LBBB, % (n) | 0 (166) | 0 (826) | 0 (95) | 0 (1087) | – |
LVH, % (n) | 45 (166) | 28 (826) | 36 (95) | 31 (1087) | 0.004** |
RVH, % (n) | 0.6 (166) | 3.1 (826) | 6.3 (95) | 3 (1087) | 0.03^ |
Twi V1–V2, % (n) | 13 (166) | 2.2 (826) | 7.3 (95) | 4.3 (1087) | 0.005** |
Twi V1–V3% (n) | 13 (166) | 1 (826) | 6.3 (95) | 3.3 (1087) | 0.005** |
Twi V1–V4, % (n) | 4.2 (166) | 0.6 (826) | 2.1 (95) | 1.3 (1087) | 0.001** |
Twi Inferiorly, % (n) | 0.6 (166) | 0 (826) | 0 (95) | 0.1 (1087) | 0.06 |
Twi laterally, % (n) | 0.6 (166) | 0.1 (826) | 0 (95) | 0.2 (1087) | 0.38 |
RAE % (n) | 1.2 (164) | 0.1 (825) | 0 (95) | 0.3 (1087) | 0.05 |
LAE % (n) | 2.4 (166) | 2.2 (826) | 1 (95) | 2.1 (1087) | 0.74 |
QRS duration % (n) | 97 ± 13 (164) | 100 ± 24 (809) | 97 ± 31 (95) | 100 ± 22 (1068) | 0.23 |
QT % (n) | 399 ± 30 (148) | 398 ± 31 (809) | 403 ± 30 (87) | 398 ± 30 (1044) | 0.26 |
QTc % (n) | 390 ± 23 (163) | 398 ± 25 (801) | 396 ± 25 (93) | 397 ± 25 (1057) | 0.06 |
PR % (n) | 159 ± 34 (164) | 151 ± 51 (800) | 158 ± 31 (92) | 153 ± 47 (1056) | 0.26 |
LAD % (n) | 0 (164) | 1.6 (796) | 0(90) | 1.1 (1050) | 0.3 |
RAD % (n) | 0 (164) | 0.4 (796) | 0 (90) | 0 (1050) | - |
Normal axis % (n) | 100 (164) | 98.3 (796) | 100 (90) | 98.9 (1050) | 0.14 |