TRFT and reinjury rate of HMI according to British Athletic Muscle Injury Classification
| British Athletic Muscle Injury Classification | No of injuries | Median TRFT (IQR; range) days | Reinjury n (%) |
| 0a | 4 | 8.00 (13.75; 5–22) | N/A |
| 0b | 4 | 13.00 (13.75; 7–22) | 1 (25) |
| 1a | 6 | 8.00 (9.00; 2–14) | 0 |
| 1b | 15 | 17.00 (12.00; 3–34) | 1 (7) |
| 2a | 3 | 12.00 (*; 3–25) | 0 |
| 2b | 16 | 22.00 (14.5; 6–39) | 3 (19) |
| 2c | 10 | 37.00 (43.00; 8–103) | 4 (40) |
| 3a | |||
| 3b | |||
| 3c | 3 | 15.00 (*; 9–63) | 1 (33) |
| 4 | |||
| 4c | |||
| Total | 61 | 18.00 (14.00; 2–103) | 10 (16) |
*Not possible to calculate IQR (n=3)
HMI, hamstring muscle injury; N/A, not available; TRFT, time to return to full training.