TABLE 6.
Limb Symmetry Indices for 4 Hop Tests as Well as Peak Isokinetic Quadriceps and Hamstring Strengtha
| Variable | 1 y | 2 y | ||||
|---|---|---|---|---|---|---|
| Overall, Mean ± SD (Range) | <90%, n (%) | ≥90%, n (%) | Overall, Mean ± SD (Range) | <90%, n (%) | ≥90%, n (%) | |
| Single hop for distance, m | 92.0 ± 11.9 (56.3-113.8) | 9 (18.0) | 41 (82.0) | 95.6 ± 9.3 (58.1-113.8) | 7 (14.0) | 43 (86.0) |
| 6-m timed hop, s | 91.7 ± 11.6 (54.9-113.3) | 16 (32.0) | 34 (68.0) | 96.2 ± 11.5 (44.5-116.0) | 6 (12.0) | 44 (88.0) |
| Triple hop for distance, m | 90.9 ± 11.8 (46.5-105.1) | 16 (32.0) | 34 (68.0) | 95.5 ± 9.1 (62.3-107.7) | 8 (16.0) | 42 (84.0) |
| Triple crossover hop for distance, m | 90.7 ± 12.1 (54.1-105.9) | 17 (34.0) | 33 (66.0) | 96.7 ± 9.9 (60.4-111.3) | 5 (10.0) | 45 (90.0) |
| Knee extension peak torque, Nm | 84.7 ± 15.8 (37.3-122.0) | 25 (50.0) | 25 (50.0) | 92.4 ± 10.8 (62.3-111.2) | 14 (28.0) | 36 (72.0) |
| Knee flexion peak torque, Nm | 93.0 ± 14.7 (66.0-137.5) | 15 (30.0) | 35 (70.0) | 96.8 ± 15.4 (63.9-146.7) | 12 (24.0) | 38 (76.0) |