Table 2 Change (follow-up minus baseline) in knee muscle strength

Knee extensor strength (Nm/kg)

0.12 (0.07 to 0.17)^*

0.08 (0.02 to 0.15)^*

0.12 (0.06 to 0.19)^*

0.17 (0.00 to 0.33)^*

Knee flexor strength (Nm/kg)

0.05 (0.02 to 0.07)^*

0.03 (−0.02 to 0.07)

0.05 (0.01 to 0.09)

0.08 (0.01 to 0.15)

WOMAC physical function

−11.07 (−13.59 to −8.54)^*

−3.92 (−7.26 to −0.57)^*

−14.69 (−18.23 to −11.14)^*

−17.18 (−23.04 to −11.32)^*

WOMAC pain

−10.40 (−13.10 to − 7.70)^*

−6.73 (−11.41 to −2.05)^*

−10.91 (−14.83 to −6.98)^*

−16.59 (−21.76 to −11.44)^*

VAS pain

−20.80 (−25.33 to −16.27)^*

−22.81 (−30.23 to −15.39)^*

−18.68 (−25.16 to −12.21)^*

−21.58 (−33.74 to −9.42)^*