Table 1.
Gender difference in postural stability performance and percentage change from CONTROL in postural stability performance for girls and boys with effect sizes, effect size magnitudes and 95% confidence intervals
| Girl (n = 9) | Boy (n = 17) | Effect size | Magnitude (95% CI) | |
|---|---|---|---|---|
| COP-PV (mm/s) | ||||
| Pooled | 8.93 ± 3.38* | 10.86 ± 2.86* | 0.63 | Medium (−1.44/0.21) |
| CONTROL | 9.11 ± 3.61 | 11.04 ± 3.24 | 0.57 | Medium (−1.38/0.27) |
| ECHB | 9.33 ± 3.76 | 11.00 ± 2.78 | 0.53 | Medium (−1.33/0.31) |
| EOCS | 8.35 ± 3.06 | 10.54 ± 2.69 | 0.78 | Medium (−1.59/0.08) |
| COP-PV Percentage Change from CONTROL | ||||
| ECHB | 2.45 ± 5.9 | 0.95 ± 9.04 | 0.18 | Trivial (−0.63/0.99) |
| EOCS | −6.88 ± 8.43 | −3.16 ± 14.47 | 0.29 | Small (−1.09/0.53) |
| COP-RD (mm/m) | ||||
| Pooled | 5.62 ± 2.40* | 7.04 ± 2.83* | 0.53 | Medium (−1.33/0.31) |
| CONTROL | 4.06 ± 1.61* | 6.75 ± 2.93* | 1.05 | Large (−1.87/−0.16) |
| ECHB | 7.20 ± 2.20 | 8.79 ± 3.73 | 0.48 | Small (−1.28/0.35) |
| EOCS | 9.29 ± 1.98 | 11.13 ± 3.21 | 0.64 | Medium (−1.45/0.20) |
| COP-RD Percentage Change from CONTROL | ||||
| ECHB | 92.44 ± 86.42* | 36.56 ± 45.09* | 0.90 | Large (0.03/1.71) |
| EOCS | 157.14 ± 100.52 | 92.32 ± 94.85 | 0.67 | Medium (−0.18/1.48) |
| COP-AV (mm2/s) | ||||
| Pooled | 21.57 ± 14.08* | 33.32 ± 18.00* | 0.70 | Medium (−1.51/0.15) |
| CONTROL | 13.27 ± 8.33* | 25.97 ± 16.05* | 0.91 | Large (−1.72/−0.04) |
| ECHB | 24.24 ± 15.68 | 33.45 ± 14.29 | 0.62 | Medium (−1.43/0.22) |
| EOCS | 27.19 ± 14.44 | 40.55 ± 20.89 | 0.70 | Medium (−1.51/0.15) |
| COP-AV Percentage Change from CONTROL | ||||
| ECHB | 94.03 ± 98.22 | 45.49 ± 51.52 | 0.69 | Medium (−0.16/1.49) |
| EOCS | 132.17 ± 89.39 | 77.94 ± 85.33 | 0.63 | Medium (−0.22/1.43) |
*
significant gender difference at p<0.05.
COP-PV=COP path velocity; COP-RD=COP radial displacement; COP-AV=COP area velocity; ECHB=eyes closed, head tilted back at 45°; EOCS=eyes open, compliant (foam) surface; CI=confidence interval