Table 2.
Values for Dynamic Postural Stability Index, directional components, and vGRFmax according to ankle brace condition. Data are means (±SD).
| Variable | Condition | P-value | Effect Size | Observed Power | ||
|---|---|---|---|---|---|---|
| NB | SB | SRB | ||||
| Dynamic Postural Stability Index (DPSI ) | .32 (.01) | .32 (.01) | .31 (.01) | .014 | .38 | .78 |
| Anterior-posterior stability index (APSI ) | .14 (.01) | .13 (.01) | .13 (.02) | .315 | .12 | .23 |
| Medial-lateral stability index (MLSI ) | .03 (.01) | .03 (.00) | .03 (.01) | .508 | .07 | .15 |
| Vertical stability index (VSI ) | .29 (.02) | .29 (.03) | .28 (.03) | .005 | .44 | .88 |
| vGRF max (%BW) | 1.90 (.23) | 1.90 (.24) | 1.84 (.25) | .037 | .31 | .66 |
NB, Non Brace; SB, Soft supoort Brace; SRB, Semi-rigid support Brace; vGRF max, maximum vertical grand reaction force; %BW, % body weight. *Effect size was calculated using the formula f = d* √1/2k , where d = (mmax − mmin) / σ and k = the number of treatments. Observed power was generated by SPSS software.