TABLE 4.
Relationships Between Selected Lower Extremity Muscle Group Strength and Shin Injury
| 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 | 26.1 | 2.35 | 0.5‐10.9 | 14 | 7.1 | 1.23 | 0.7‐21.6 | 9 | 55.6 | 1.25 | 0.2‐9.9 |
| T2 | 22 | 18.2 | 1.48 | 0.3‐7.5 | 16 | 12.5 | 2.28 | 0.2‐28.0 | 6 | 33.3 | 1.00 | NA |
| T3 (strongest) | 23 | 13.0 | 1.00 | Ref | 17 | 5.9 | 1.00 | Ref | 6 | 33.3 | 1.00 | Ref |
| Knee Extensor (Quadriceps) Strength | ||||||||||||
| T1 (weakest) | 22 | 31.8 | 1.24 | 0.3‐4.5 | 16 | 25.0 | NA | NA | 6 | 50.0 | 0.83 | 0.1‐6.1 |
| T2 | 24 | 0.0 | NA | NA | 20 | 0.0 | NA | NA | 4 | 0.0 | NA | NA |
| T3 (strongest) | 22 | 27.3 | 1.00 | Ref | 11 | 0.0 | 1.00 | Ref | 11 | 54.5 | 1.00 | Ref |
| Knee Flexor (Hamstring) Strength | ||||||||||||
| T1 (weakest) | 23 | 21.7 | 0.74 | 0.2‐ 2. 9 | 17 | 11.8 | 1.33 | 0.1‐16.7 | 6 | 50.0 | 1.20 | 0.2‐8.8 |
| T2 | 23 | 8.7 | 0.25 | 0.1‐1.4 | 19 | 5.3 | 0.55 | 0.1‐9.9 | 4 | 25.0 | 0.40 | 0.1‐5.2 |
| T3 (strongest) | 22 | 27.3 | 1.00 | Ref | 11 | 9.1 | 1.00 | Ref | 11 | 45.5 | 1.00 | Ref |
N, Number of runners at risk for shin injury; OR, Odds Ratio; CI, Confidence interval; T1, weakest tertile; T2, middle tertile; T3, strongest tertile; NA, Non‐applicable