Table 2.
Results of studies investigating the effectiveness of anterior cruciate ligament injury prevention programs on vertical ground reaction force (VGRF).
| Study | Taska | Outcome | Change (%)b | Effect Size |
|---|---|---|---|---|
| Hewett et al14 | VJ | DecreasedVGRFc | −18.0 | 0.87 |
| Prappavessis et al33 | DL | DecreasedVGRFc | −33.3 | 0.79 |
| Irmischer et al16 | DL | DecreasedVGRFc | −26.4 | 1.4 |
| Herman et al12 | SJ | No significant change | −3.1 | 0.07 |
| Chappell, Limpisvasti5 | SJ | No significant change | 1.6 | 0.07 |
| DJ | No significant change | 8.5 | 0.28 | |
| Lephart et al17 | VJ | No significant change for basic resistance group | −4.2 | 0.14 |
| No significant change for plyometric group | −4.1 | 0.12 |
a
VJ, vertical jump; DL, drop land; SJ, stop jump.
b
Negative percentage change indicates decreased VGRF; positive percentage change indicates increased VGRF.
c
Indicates significant change following completion of injury prevention program.