Table 2.
Mixed regression models between wobble board test performance and independent variables.
| Coef. |
SE |
z |
P>|z| |
[95% CI] |
||
|---|---|---|---|---|---|---|
| A) Wobble board test (T1) | ||||||
| Ankle mean (°) | 0.127184 | 0.0515616 | 2.47 | .014 | 0.0261252 | 0.2282429 |
| Ankle variance (°) | 0.4046644 | 0.1095888 | 3.69 | <.001 | 0.1898742 | 0.6194546 |
| Ankle SD (°) | -4.529743 | 0.8805929 | -5.14 | <.001 | -6.255673 | -2.803812 |
| Ankle range (°) | -0.2324548 | 0.0925858 | -2.51 | .012 | -0.4139197 | -0.05099 |
| Lower limb length (cm) | -0.2372182 | 0.0661291 | -3.59 | <.001 | -0.3668289 | -0.1076076 |
| _cons |
36.56276 |
8.310829 |
4.40 |
<.001 |
20.27384 |
52.85169 |
|
R2: 0.83 |
RMSE: 3.25 |
P: < .0001 |
||||
| B) Wobble board test (T2) | ||||||
| Ankle mean (°) | 0.1738654 | 0.0593022 | 2.93 | .003 | 0.0576353 | 0.2900955 |
| Ankle variance (°) | 0.4629237 | 0.1317005 | 3.51 | <.001 | 0.2047955 | 0.7210518 |
| Ankle SD (°) | -5.220193 | 0.8799794 | -5.93 | <.001 | -6.944921 | -3.495465 |
| Knee SD (°) | 0.5952131 | 0.2694632 | 2.21 | .027 | 0.0670749 | 1.123351 |
| Body height (cm) | -0.1622368 | 0.0516359 | -3.14 | .002 | -0.2634413 | -0.0610323 |
| _cons |
36.7864 |
11.83021 |
3.11 |
.002 |
13.59962 |
59.97319 |
|
R2: 0.75 |
RMSE: 3.62 |
P: < .0001 |
||||
| C) Wobble board test (T3) | ||||||
| Ankle mean (°) | 0.1619749 | 0.0646645 | 2.50 | .012 | 0.0352349 | 0.288715 |
| Ankle variance (°) | 0.1978885 | 0.099032 | 2.00 | .046 | 0.0037894 | 0.3919877 |
| Ankle range (°) | -0.6410204 | 0.1708659 | -3.75 | <.001 | -0.9759114 | -0.3061294 |
| Lower limb length (cm) | -0.3059346 | 0.0961308 | -3.18 | .001 | -0.4943475 | -0.1175217 |
| _cons |
31.8308 |
10.92265 |
2.91 |
.004 |
10.4228 |
53.23881 |
| R2: 0.56 | RMSE: 3.74 | P: < .0001 | ||||
T1 = Time-segment one; T2 = Time-segment two; T3 = Time segment three; SD = Standard deviation; _cons = Intercept; coef. = Coefficient; SE = Standard errors; CI = Confidence Interval; R2 = Bryk/Raudenbush R-squared; RMSE = Root mean squared error.