Table 1 Population characteristics (n = 156)
|  | intervention (n = 77) | control (n = 79) |
|---|---|---|
mean age, years (sd, range) | 53.6 (8.6, 20.9–64.6) | 54.8 (6,4, 32.9–64.9) |
female, n (%) | 37 (48) | 40 (51) |
BMI, kg/m2 mean (sd, range) | 28.9 (5.2, 20.4–44.8) | 29.2 (5.4,19.4–43.5) |
K&L I-II, n (%) | 44 (57) | 47 (59) |
K&L III, n (%) | 33 (43) | 32 (41) |
duration knee complaints 3-12 M, n (%) | 43 (56) | 36 (46) |
duration knee complaints > 12 M, n (%) | 34 (44) | 43 (54) |
pain during rest (0–10) 1, mean (sd, range) | 4.8 (2.5, 0–8.0) | 4.1 (2.6, 0–10) |
pain during activity (0–10) 1, mean (sd, range) | 6.5 (2.4, 0–10) | 5.8 (2.4, 0–10) |
quality of life (0–1)2, mean (sd, range) | 0.68 (0.23, −0.05-1) | 0.71 (0.24, −0.11-1) |
KOOS subscales (0–100), mean (sd, range) | ||
 pain | 46.6 (20.6, 5.6–100) | 52.5 (21.1, 11.1–100) |
 other symptoms | 55.7 (18.3, 17.9–100) | 61.3 (21.8, 3.6–100) |
 function in daily life | 53.2 (20.2, 7.4–100) | 60.2 (24.0, 10.3-100) |
 function in sports & recreation | 24.0 (25.7, 0–95.0) | 31.1 (30.9, 0–100) |
 knee related quality of life | 30.8 (18.5, 0–68.8) | 35.9 (18.7, 0–81.3) |