Table 3.
Linear Multiple Regression Analysis to Predict TUG Performance Using Strength Measurements (HS, Isokinetic Torque of the Ankle and Knee Joints) for All Participants (ALL), Old Adults (OLD) and Very Old Adults (VOD)
| Explanatory Variable | Coefficient (STD Error) |
95% Confidence Interval | T Statistics | P value | |||||
|---|---|---|---|---|---|---|---|---|---|
| 60°.s−1 | ALL | (n=148; R2 = 0.150; R2 adjusted = 0.120) | |||||||
| Constant | 11.975 (1.318) | (9.37, 14.58) | 9.08 | <0.01 | |||||
| HS | 0.026 (0.047) | (−0.067, 0.12) | 0.55 | 0.58 | |||||
| Knee ext. 60°.s−1 | −0.012 (0.015) | (−0.041, 0.018) | −0.79 | 0.43 | |||||
| Knee flex. 60°.s−1 | −0.028 (0.022) | (−0.072, 0.017) | −1.23 | 0.22 | |||||
| Plantar flex. 60°.s−1 | −0.051 (0.021) | (−0.092, −0.011) | −2.50 | 0.01* | |||||
| Dorsi flex. 60°.s−1 | 0.035 (0.064) | (−0.091, 0.162) | 0.550 | 0.58 | |||||
| OLD | (n= 72; R2 = 0.176; R2 adjusted = 0.114) | ||||||||
| Constant | 10.371 (1.009) | (8.356, 12.386) | 10.27 | <0.01 | |||||
| HS | 0.034 (0.031) | (−0.028,0.097) | 1.10 | 0.27 | |||||
| Knee ext. 60°.s−1 | −0.009 (0.010) | (−0.029, 0.012) | −0.85 | 0.40 | |||||
| Knee flex. 60°.s−1 | 0.015 (0.015) | (−0.0125, 0.045) | 0.97 | 0.33 | |||||
| Plantar flex. 60°.s−1 | −0.029 (0.013) | (−0.055, −0.003) | −2.22 | 0.03* | |||||
| Dorsi flex. 60°.s−1 | −0.075 (0.047) | (−0.0169, 0.019) | −1.59 | 0.12 | |||||
| VOD | (n=76; R2 = 0.191; R2 adjusted = 0.133) | ||||||||
| Constant | 12.308 (2.210) | (7.899, 16.716) | 5.57 | <0.01 | |||||
| HS | 0.036 (0.091) | (−0.146, 0.217) | 0.39 | 0.69 | |||||
| Knee ext. 60°.s−1 | −0.005 (0.027) | (−0,059, 0.048) | −0.19 | 0.85 | |||||
| Knee flex. 60°.s−1 | −0.051(0.043) | (−0.136,0.033) | −1.21 | 0.23 | |||||
| Plantar flex. 60°.s−1 | −0.078 (0.041) | (−0.160, 0.004) | −1.91 | 0.06* | |||||
| Dorsi flex. 60°.s−1 | 0.106 (0.110) | (−0.115, 0.326) | 0.95 | 0.34 | |||||
| 180°.s−1 | ALL | (n=148; R2 = 0.158; R2 adjusted = 0.129) | |||||||
| Constant | 11.851 (1.213) | (9.453, 14.248) | 9.77 | <0.01 | |||||
| HS | 0.010 (0.048) | (−0.086, 0.106) | 0.20 | 0.84 | |||||
| Knee ext. 180°.s−1 | 0.015 (0.015) | (−0.014, 0.045) | 1.03 | 0.30 | |||||
| Knee flex. 180°.s−1 | −0.091 (0.056) | (−0.144, 0.038) | −3.37 | <0.01* | |||||
| Plantar flex. 180°.s−1 | −0.032 (0.023) | (−0.076, −0.013) | −1.41 | 0.16 | |||||
| Dorsi flex. 180°.s−1 | 0.016 (0.056) | (−0.095, 0.128) | 0.29 | 0.77 | |||||
| OLD | (n= 72; R2 = 0.110; R2 adjusted = 0.042) | ||||||||
| Constant | 9.669 (0.950) | (7.772, 11.566) | 10.17 | <0.01 | |||||
| HS | 0.017 (0.034) | (−0.052,0.086) | 0.49 | 0.63 | |||||
| Knee ext. 180°.s−1 | 0.011 (0.010) | (−0.009, 0.030) | 1.11 | 0.27 | |||||
| Knee flex. 180°.s−1 | −0.013 (0.020) | (−0.052, 0.027) | −0.64 | 0.52 | |||||
| Plantar flex. 180°.s−1 | −0.021 (0.014) | (−0.049, 0.007) | −1.51 | 0.14 | |||||
| Dorsi flex. 180°.s−1 | −0.074 (0.041) | (−0.0155, 0.007) | −1.82 | 0.07 | |||||
| VOD | (n=76; R2 = 0.232; R2 adjusted = 0.178) | ||||||||
| Constant | 12.143 (2.098) | (7.959, 16.327) | 5.78 | <0.01 | |||||
| HS | −0.008 (0.090) | (−0.188, 0.172) | −0.09 | 0.93 | |||||
| Knee ext. 180°.s−1 | 0.028 (0.032) | (−0.035, 0.092) | 0.89 | 0.38 | |||||
| Knee flex. 180°.s−1 | −0.142(0.050) | (−0.242,-0.043) | −2.85 | <0.01* | |||||
| Plantar flex.180°.s−1 | −0.035 (0.051) | (−0.137, 0.066) | −0.70 | 049 | |||||
| Dorsi flex. 180°.s−1 | 0.121 (0.102) | (−0.083, 0.324) | 1.18 | 0.24 | |||||
Note:*Indicates significant differences.