TABLE 3.
Relationships Between Selected Lower Extremity Muscle Group Strength and Anterior Knee Pain (AKP).
| Total (N=68) | Girls (N=47) | Boys (N=21) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N at risk | % injured | OR | (95% CI) | N at risk | % injured | OR | (95% CI) | N at risk | % injured | OR | (95% CI) | |
| Hip Abductor Strength | ||||||||||||
| T1 (weakest) | 23 | 13.0 | NA | NA | 14 | 14.3 | NA | NA | 9 | 8.6 | NA | NA |
| T2 | 22 | 0.0 | NA | NA | 16 | 0.0 | NA | NA | 6 | 0.0 | NA | NA |
| T3 (strongest) | 23 | 0.0 | 1.00 | Ref | 17 | 0.0 | 1.00 | Ref | 6 | 0.0 | 1.00 | Ref |
| Knee Extensor (Quadriceps) Strength | ||||||||||||
| T1 (weakest) | 22 | 13.6 | NA | NA | 16 | 12.5 | NA | NA | 6 | 16.7 | NA | NA |
| T2 | 24 | 0.0 | NA | NA | 20 | 0.0 | NA | NA | 4 | 0.0 | NA | NA |
| T3 (strongest) | 22 | 0.0 | 1.00 | Ref | 11 | 0.0 | 1.00 | Ref | 11 | 0.0 | 1.00 | Ref |
| Knee Flexor (Hamstring) Strength | ||||||||||||
| T1 (weakest) | 23 | 13.0 | NA | NA | 17 | 11.8 | NA | NA | 6 | 16.7 | NA | NA |
| T2 | 23 | 0.0 | NA | NA | 19 | 0.0 | NA | NA | 4 | 0.0 | NA | NA |
| T3 (strongest) | 22 | 0.0 | 1.00 | Ref | 11 | 0.0 | 1.00 | Ref | 11 | 0.0 | 1.0 | Ref |
N, Number of runners at risk for AKP; OR, Odds Ratio; CI, Confidence interval; T1, weakest tertile; T2, middle tertile; T3, strongest tertile; NA, Non‐applicable