Table 3. Correlation between foot muscle activation and CoP parameters in LOS (r-value).
| Tasks | Muscles | Total Length (TL) | Sway Area (SA) | Maximum Range of Anteroposterior Sway (AP Range) | Maximum Range of Mediolateral Sway (ML Range) |
|---|---|---|---|---|---|
| Forward side | AbH | 0.57* | 0.64* | 0.56*,** | 0.45* |
| FDB | 0.60* | 0.62* | 0.52* | 0.37* | |
| Backward side | AbH | 0.33* | 0.06 | 0.22 | −0.07 |
| FDB | 0.42* | 0.24 | 0.23 | 0.01 | |
| Dominant side | AbH | 0.42* | 0.37* | 0.39* | 0.36* |
| FDB | 0.64* | 0.56* | 0.34* | 0.51* | |
| Non-dominant side | AbH | 0.15 | 0.05 | 0.23 | −0.01 |
| FDB | 0.21 | 0.11 | 0.27 | 0.08 |
Notes.
- AbH
- Abductor hallucis
- FDB
- Flexor digitorum brevis
- TL
- Total length
- SA
- Sway area
- AP Range
- Maximum range of antero–posterior sway
- ML Range
- Maximum range of medio-lateral sway
*
Significant correlation between muscle activation and CoP parameters, p < 0.05, 0.7 ≤ |r| < 1, 0.3 ≤ |r| < 0.7, and |r| < 0.3 represent a strong, moderate, and weak correlation, respectively.
**
Determined by Pearson’s correlation analysis, and the use of Spearman’s correlation analysis if the pound sign is not marked.