Table 1 Participant characteristics at baseline, one week and 3 months

Age in years^a

45 (11)

45 (11)

47 (11)

Gender female^b

109 (78)

40 (74)

81 (81)

BMI^a

28 (5)

28 (5)

28 (5)

  < 3 months

1 (0.7)

0

1 (1)

 3–6 months

32 (23)

12 (22)

22 (22)

 6–12 months

39 (28)

19 (35)

30 (30)

  > 12 months

67 (48)

23 (43)

48 (48)

Physical activity level^b

(n = 136)

(n = 53)

(n = 97)

 Sedentary

23 (17)

11 (21)

16 (17)

 Walking, biking ≥4 h/w

79 (58)

26 (49)

57 (59)

 Recreational sport ≥4 h/w

28 (21)

14 (26)

20 (21)

 Exercise / competition

6 (4)

2 (4)

4 (4)

NRS pain in activity^c

6 (5–8)

6 (4–8)

6 (5–8)

NRS pain at rest^c

3 (2–5)

3 (1–5)

3 (2–5)

RAND-12 sum score

n = 97

 PCS12^c

39 (32–46)

40 (33–48)

40 (34–48)

RAND-12 sum score

n = 97

 MCS12^c

43 (34–53)

46 (35–56)

46 (36–54)

FFI-RSN sum score^c

44 (31–58)

40 (25–54)

43 (30–55)