Table 2 Results for pre-post (within-group) comparison (n = 78)

 Pain subscale (5 items, 1–10)

5.8 ± 1.7

7.2 ± 1.8

1.4 ± 1.8, 1.0 to 1.8

 Function subscale (3 items, 1–10)

6.4 ± 2.7

7.5 ± 2.4

1.1 ± 1.4, 0.8 to 1.4

 Other symptoms subscale (6 items, 1–10)

6.2 ± 1.6

7.4 ± 1.6

1.3 ± 1.4, 0.9 to 1.6

 Average of 13 items (1–4)

3.3 ± 0.4

3.5 ± 0.4

0.23 ± 0.35, 0.16 to 0.31

 Importance of regular physical activity (0–10)^a

8.8 ± 1.5

9.3 ± 1.1

0.4 ± 1.3, 0.1 to 0.7

 Confidence can achieve sufficient physical activity (0–10)^a

6.6 ± 2.5

7.4 ± 2.1

0.8 ± 2.0, 0.4 to 1.3