Table 4 Unstandardized regression coefficients, B (95% CI) on WOMAC function and total physical activity (TKA cohort)

Model 1 (n = 28)

R² = 0.55

<0.001

R² = 0.36

0.01

 BMI

0.67 (−1.27 to 2.61)

0.48

4.11 (−10.68 to 18.89)

0.57

 Gender

−14.23 (−34.93 to 6.47)

0.17

45.06 (−112.70 to 202.77)

0.56

 TUG

6.58 (3.16 to 10.0)

<0.001

−42.46 (−68.52 to −16.40)

0.003

Model 2 (n = 32)

R² = 0.34

0.01

R² = 0.16

0.18

 BMI

0.40 (−1.83 to 2.62)

0.72

3.14 (−12.64 to 18.92)

0.69

 Gender

−15.14 (−38.30 to 8.03)

0.19

14.23 (−150.10 to 178.51)

0.86

 6MW distance

−0.10 (−0.20 to −0.01)

0.04

0.67 (0.00 to 1.35)

0.05

Model 3 (n = 32)

R² = 0.34

0.01

R² = 0.16

0.19

 BMI

0.33 (−1.90 to 2.57)

0.76

3.44 (−12.47 to 19.34)

0.66

 Gender

−16.39 (−39.17 to 6.40)

0.15

23.39 (−138.89 to 185.64)

0.77

 30MW distance

−0.02 (−0.03 to −0.001)

0.04

0.10 (−0.02 to 0.21)

0.05