Table 1 Comparison of baseline characteristics of study participants

Gender (% female)

15 (83%)

21 (84%)

0.95^a

Age (years)

21 (17–34)

28 (21.5–31.5)

0.16^b

Weight (kg)

71.8 ± 13.4

66.9 ± 8.6

0.15^c

Height (cm)

172.8 ± 7.7

171.0 ± 7.7

0.57^c

Duration of symptoms (months)

27 (19.5–80.3)

36 (24–90)

0.37^b

Weekly participation in sport (% yes)

12 (67%)

17 (68%)

0.93^a

Number of patients receiving physical therapy in the past (% yes)

14 (78%)

24 (96%)

0.07^a

Number of patients with chondral lesions ≤ grade 2 (% yes)

8 (44%)

4 (16%)

0.04^a

Number of patients with bilateral knee pain (% yes)

7 (39%)

8 (32%)

0.39^a

Maximum pain* (mm)

73.6 ± 13.6

74.4 ± 14.3

0.85^c

Minimum pain* (mm)

10.0 (4.3–22.5)

7.0 (0.0–17.0)

0.24^b

Current pain* (mm)

27.0 (9.5–48.0)

33.0 (18.0–53.0)

0.68

AKPS

60.4 ± 10.6

66.9 ± 11.6

0.07

MVPF (N·m)

121.5 (105.0–154.5)

125.0 (103.3–137.8)

0.78