Anthropometric data by group
| Under-18 | Adult | Significance | |
|---|---|---|---|
| Age (years) | 16.7 (16–17) | 27.2 (19–50) | <0.001* |
| Experience of the front row (years) | 5.0 (1–12) | 14.3 (2–26) | <0.001* |
| Regular neck strengthening (yes/no) | 7/23 | 5/21 | 0.959† |
| Height (cm) | 178.7 (5.54) | 178.7 (5.91) | 0.960 |
| Weight (kg) | 96.0 (13.69) | 107.8 (13.67) | 0.004* |
| Grip strength (kg) | 47.8 (5.31) | 49.56 (7.56) | 0.360 |
| Cervical range of motion (degrees) | |||
| Extension | 65.33 (8.70) | 65.62 (6.62) | 0.895 |
| Flexion | 58.50 (8.32) | 44.10 (8.93) | <0001* |
| Side flexion (left) | 49.17 (5.88) | 44.33 (6.51) | 0.010* |
| Side flexion (right) | 45.60 (8.93) | 41.33 (6.18) | 0.049 |
| Rotation (left) | 66.50 (7.67) | 65.90 (6.80) | 0.772 |
| Rotation (right) | 67.83 (8.06) | 64.76 (6.83) | 0.149 |
Age and experience reported as mean (range), all other variables as mean (SD).
*Remains significant at the 0.05 level correcting for multiple testing.
†χ2 test.