Exercise alone (n=42) | Exercise +ACLR (n=45) | p Value | Proportion of Individuals with LSI ≥90%* | |
---|---|---|---|---|
Muscle strength† | ||||
Quadriceps, n=69 LSI (%) | 100 (3) | 100 (3) | 0.92 | 69 (87) |
Hamstrings, n=58 LSI (%) | 100 (0) | 100 (6) | 0.19 | 55 (83) |
Functional performance | ||||
One-leg hop, n=82 | ||||
Injured leg (cm) | 148 (44) | 152 (40) | 0.23 | |
LSI (%) | 100 (7) | 99.3 (7) | 0.21 | 90 (95) |
Square-hop, n=81 | ||||
Injured leg, no | 35 (9) | 36.5 (12) | 0.39 | |
LSI (%) | 100 (12) | 104.4 (9) | 0.68 | 80 (86) |
Vertical hop, n=42 | ||||
Injured leg (cm) | 24 (12) | 28 (16) | 0.48 | |
LSI (%) | 98.8 (12) | 93.3 (21) | 0.08 | 36 (74) |
One-leg balance, n=82 | ||||
Injured leg (s) | 43 (40) | 32.5 (44) | 0.80 | |
LSI (%) | 100 (50) | 100 (53) | 0.42 | 76 (80) |
One-leg rise, n=83 | ||||
Injured leg (cm)‡ | 85 (20) | 84.5 (20) | 0.57 | |
LSI (%) | 100 (0) | 100 (4) | 0.23 | 84 (90) |
Test battery, n=74 (LSI≥90% in all 4 tests) n (%) | 25 (68) | 27 (73) | 0.61 | 60 (70) |
Values are the median (IQR) unless otherwise indicated.
*Presented as proportion of total (n=87) study sample (proportion of those who performed the test).
†Absolute values are not presented since two methods were used to assess muscle strength at testing sites.
‡Test values were transformed by subtracting the result from 100, giving a new scale with best result=100, worst result=0.
ACLR, anterior cruciate ligament reconstruction; LSI, leg symmetry index (injured leg divided by non-injured leg×100).