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.