Table 1 Clinical findings in athletes and controls
From: Electrocardiographic pattern of apparently healthy African adolescent athletes in Nigeria
Variables | Athletes | Controls | Test statistics | P – value |
|---|---|---|---|---|
Mean age (years) | 14.46 ± 1.76 | 13.11 ± 1.75 | t = 7.294 | < 0 .001 |
Mean BMI (kg/m2) | 20.13 ± 2.85 | 20.43 ± 4.19 | t = − 0.782 | 0.435 |
Mean oxygen saturationa(%) | 97.47 ± 1.32 | 97.77 ± 1.20 | t = −2.29 | 0.220 |
Mean pulse rate (bpm) | 81.93 ± 12.83 | 87.22 ± 13.91 | t = −3.747 | < 0.001 |
Pulse rate categories | ||||
 Bradycardia (< 60 bpm) | 4 (2.2) | 1 (0.6) |  |  |
 Normal (60–100 bpm) | 161 (89.4) | 150 (83.3) | χ2 = 6.644 | 0.036 |
 Tachycardia (> 100 bpm) | 15 (8.3) | 29 (16.1) |  |  |
Blood Pressure (first measurement) | ||||
 Low (<5th centile)b | 1 (0.6) | 3 (1.7) |  |  |
 Normal (5th to 90th centile)b | 163 (90.6) | 170 (94.4) | χ2 = 4.669 | 0.097 |
 Elevated (> 90th centile)b | 16 (8.9) | 7 (3.9) |  |  |
Heart Murmur | ||||
 Absent | 176 (97.8) | 180 (100.0) | χ2 = 4.045 | 0.044 |
 Present (systolic ≤ grade 2/6) | 4 (2.20) | 0 (0.0) |  |  |
BMI classification | ||||
 Underweight | 56 (31.1) | 66 (36.7) |  |  |
 Normal weight | 112 (62.2) | 93 (51.7) | χ2 = 6.767 | 0 .080 |
 Overweight | 11 (6.1) | 15 (8.3) |  |  |
 Obesity | 1 (0.6) | 6 (3.3) |  |  |