Perceived modifiable risk factors for hamstring injuries, divided between intrinsic factors (players) and extrinsic factors (coaching, team, club)
| Total group (n=15) Weighted average | Group LOW (n=7) Weighted average | Group HIGH (n=8) Weighted average | |
| Intrinsic risk factors (players) | |||
| Residual weakness after previous hamstring injury | 3.5 | 3.6 | 3.5 |
| Strength asymmetry of hamstrings (R/L ratio, Q/H ratio) | 3.3 | 3.4 | 3.1 |
| Lack of eccentric strength of the hamstrings | 3.2 | 3.3 | 3.1 |
| Fatigue | 3.1 | 2.6 | 3.6 |
| Poor core stability (lumbopelvic control) | 3.1 | 2.9 | 3.3 |
| Poor coordination | 2.8 | 2.9 | 2.8 |
| Player wellness (sleep patterns, relationships, etc) | 2.5 | 2.0 | 3.0 |
| Poor flexibility | 2.4 | 2.1 | 2.6 |
| Poor nutrition | 2.1 | 2.3 | 2.0 |
| Mean | 26/9=2.9 | 25/9=2.8 | 27/9=3.0 |
| Extrinsic risk factors (coaching, team, club) | |||
| Lack of communication between medical staff and coaching staff | 3.7 | 3.6 | 3.8 |
| Lack of regular exposure to high-speed football during training | 3.6 | 3.8 | 3.5 |
| Load on players | 3.5 | 3.1 | 3.8 |
| Lack of in-season recovery strategies | 3.5 | 3.6 | 3.4 |
| Lack of interest in prevention strategies in the team or club | 3.4 | 3.3 | 3.5 |
| Playing matches 2–3 times a week | 3.3 | 3.4 | 3.3 |
| Lack of regular exposure to strength training (eccentric/isometric/concentric) | 3.2 | 3.4 | 3.0 |
| Training/exercise surveillance by coaching staff | 3.2 | 3.1 | 3.3 |
| Off-season loading/recovery | 2.7 | 2.4 | 3.0 |
| No and expertise of the medical staff | 2.7 | 2.3 | 3.1 |
| Style of coach leadership | 2.7 | 2.1 | 3.3 |
| Medical budget | 1.9 | 1.4 | 2.3 |
| Mean | 37/12=3.1 | 36/12=3.0 | 39/12=3.2 |