Table 5

Results for secondary outcomes: TUG, quadriceps, hamstring strength and knee joint range of motion^a

Variable

OAK and control

preintervention^b

OAK

Control

Difference in change between groups

8

weeks

6

months

8

weeks

6

months

Preintervention

to 8 weeks

95%

CI

Preintervention to 6 months

95% CI

TUG (score)^c

12 (0)

10 (0.2)

10 (0.2)

11 (0.2)

11 (0.2)

-1.3

-1.81 to -0.86

-0.72

-1.35 to -0.08

Muscle Strength (kg)

Left quadriceps

18.9 (0)

20.3 (0.5)

19.6 (0.7)

18.6 (0.5)

18.1 (0.7)

1.65

0.34 to 2.95

1.58

-0.31 to 3.47

Right quadriceps

18.0 (0)

19.6 (0.5)

18.9 (0.7)

17.8 (0.5)

18.2 (0.7)

1.79

0.33 to 3.24

0.66

-1.37 to 2.69

Left hamstring^c

8.0 (0)

10.1 (0.3)

9.5 (0.4)

8.6 (0.3)

8.79 (0.4)

1.47

0.63 to 2.30

0.74

-0.31 to 1.79

Right hamstring^c

7.6 (0)

10.2 (0.3)

9.8 (0.4)

8.4 (0.3)

8.7 (0.4)

1.80

0.89 to 2.70

1.18

0.06 to 2.29

Range of motion (°)

Left knee flexion^c

125 (0)

126 (0.8)

126 (0.9)

123 (0.8)

123 (0.9)

2.80

0.58 to 5.02

2.26

-0.32 to 4.86

Right knee flexion

123 (0)

123 (0.9)

121 (0.9)

121 (0.9)

121 (0.9)

1.56

-0.90 to 4.02

0.02

-2.53 to 2.57

Left knee extension^c

-4 (0)

-4 (0.3)

-4 (0.5)

-4 (0.3)

-3 (0.5)

0.1

-0.72 to 0.88

-1.39

-2.71 to -0.06

Right knee extension^c

-4 (0)

-4 (0.3)

-5 (0.5)

-5 (0.3)

-3 (0.5)

0.9

-0.03 to 1.78

-1.18

-2.63 to 0.26

^aOAK: Osteoarthritis of the Knee Self-Management Program; TUG: Timed Up & Go Test. ^bPreintervention values were the same in both groups when the baseline value was used as a covariate. ^cP < 0.05. Preintervention (baseline), postintervention (8 weeks) and 6-month values were calculated using repeated-measures analysis of covariance with the baseline value of the dependent variable as the covariate. Data are estimated marginal means (SEM) with the mean (95% CI) difference in changes between the groups at each time point.

Coleman et al. Arthritis Research & Therapy 2012 14:R21   doi:10.1186/ar3703