Table 2.
Effects of HD-tDCS on static balance.
| Posture Conditions | Variables | HD-tDCS | Sham | ||
|---|---|---|---|---|---|
| Pre | Post | Pre | Post | ||
| TL_EO | ML average CoG sway velocity (mm/s) | 6.53 ± 1.12 | 6.60 ± 1.03 | 6.40 ± 1.06 | 6.60 ± 1.09 |
| AP average CoG sway velocity (mm/s) | 8.48 ± 1.45 | 8.41 ± 1.23 | 8.43 ± 1.40 | 8.72 ± 1.76 | |
| TL_EC | ML average CoG sway velocity (mm/s) | 6.64 ± 0.82 | 7.03 ± 0.97 | 6.40 ± 1.17 | 6.46 ± 1.36 |
| AP average CoG sway velocity (mm/s) | 9.40 ± 1.54 | 9.28 ± 1.43 | 9.19 ± 2.02 | 9.01 ± 1.75 | |
| OL_EO | ML average CoG sway velocity (mm/s) | 31.63 ± 7.28 | 30.89 ± 7.80 | 33.42 ± 12.31 | 31.38 ± 10.52 |
| AP average CoG sway velocity (mm/s) | 29.04 ± 4.65 | 28.75 ± 5.28 | 33.63 ± 11.35 | 29.34 ± 6.55 | |
| OL_EC | ML average CoG sway velocity (mm/s) | 65.43 ± 15.80 | 59.56 ± 14.70 | 65.94 ± 17.23 | 59.52 ± 18.56 |
| AP average CoG sway velocity (mm/s) | 67.73 ± 14.45 | 60.20 ± 13.39 | 71.79 ± 17.05 | 58.73 ± 13.64 | |
Notes: TL_EO: two-leg standing with eyes open; TL_EC: two-leg standing with eyes closed; OL_EO: one-leg standing with eyes open; OL_EC: one-leg standing with eyes closed; ML: medial–lateral; AP: anteroposterior; HD-tDCS: high-definition transcranial direct current stimulation; CoG: the center of gravity.