Table 1.
Mean ± standard deviation of dependent variables for each test condition.
| C1 Eyes open, firm surface, double leg |
C2 Eyes closed, firm surface, double leg |
C3 Eyes open, foam surface, double leg |
C4 Eyes closed, foam surface, double leg |
C5 Eyes open, foam surface, right single leg |
C6 Eyes open, foam surface, left single leg |
C7 Eyes closed, firm surface, right single leg |
C8 Eyes closed, firm surface, left single leg |
C9 Eyes open, firm surface, anterior posterior sway |
C10 Eyes open, firm surface, medial lateral sway |
|
|---|---|---|---|---|---|---|---|---|---|---|
| SBMA score | 100.0 ± 0.0 | 100.0 ± 0.0 | 100.0 ± 0.0 | 99.5 ± 0.9 | 89.9 ± 11.0 | 89.5 ± 9.4 | 81.3 ± 18.8 | 82.1 ± 17.4 | 96.1 ± 5.4 | 99.4 ± 6.1 |
| Biosway® SI | 0.64 ± 0.24 | 0.68 ± 0.24 | 1.15 ± 0.37 | 1.57 ± 0.42 | 0.77 ± 0.18 | 0.96 ± 0.32 | 1.34 ± 0.39 | 1.59 ± 0.48 | 3.68 ± 0.49 | 4.11 ± 0.80 |
| Mean BOS area (m2) | 0.077 ± 0.008 | 0.077 ± 0.080 | 0.078 ± 0.009 | 0.079 ± 0.009 | 0.015 ± 0.004 | 0.016 ± 0.002 | 0.016 ± 0.020 | 0.016 ± 0.002 | 0.078 ± 0.008 | 0.079 ± 0.008 |
| Biosway® SI/BOS (m−2) | 8.23 ± 3.06 | 8.85 ± 3.26 | 14.80 ± 5.08 | 20.08 ± 5.28 | 50.04 ± 12.07 | 62.47 ± 23.24 | 85.58 ± 26.52 | 103.06 ± 37.38 | 47.76 ± 7.58 | 52.45 ± 8.97 |
| COM SI (m) | 0.0041 ± 0.0018 | 0.0043 ± 0.0017 | 0.0077 ± 0.0027 | 0.0089 ± 0.0030 | 0.0073 ± 0.0017 | 0.0080 ± 0.0029 | 0.0134 ± 0.0106 | 0.0123 ± 0.0054 | 0.0476 ± 0.0070 | 0.0756 ± 0.0144 |
| COM SI/BOS (m/m2) | 0.0533 ± 0.0221 | 0.0556 ± 0.0219 | 0.0989 ± 0.0362 | 0.1135 ± 0.0345 | 0.4722 ± 0.1119 | 0.5217 ± 0.2018 | 0.8485 ± 0.6292 | 0.7879 ± 0.3383 | 0.6140 ± 0.0881 | 0.9632 ± 0.1635 |
| COM velocity (m/sec) | 0.0028 ± 0.0009 | 0.0034 ± 0.0010 | 0.0056 ± 0.0012 | 0.0107 ± 0.0037 | 0.0122 ± 0.0041 | 0.0122 ± 0.0040 | 0.0225 ± 0.0078 | 0.0218 ± 0.0074 | 0.0567 ± 0.0086 | 0.0883 ± 0.0174 |
| COM velocity/BOS (m−1·sec−1) | 0.036 ± 0.011 | 0.045 ± 0.013 | 0.073 ± 0.018 | 0.137 ± 0.045 | 0.791 ± 0.278 | 0.798 ± 0.284 | 1.44 ± 0.51 | 1.41 ± 0.53 | 0.73 ± 0.10 | 1.13 ± 0.20 |
Mean ± standard deviation of SWAY Balance Mobile Application (SBMA) scores, Biosway Sway Index (SI), Biosway SI divided by Base of Support (BOS), and Center of Mass (COM) Balance indices (COM SI/BOS and COM velocity/BOS) for conditions C1 through C10. A larger velocity and SI score represent more postural sway. A larger SBMA score represents less postural sway.