Table 1: Characteristics of the participants (mean (SD)).

BaselineEnd point

Daily walking, mean steps in 12 wks5195 (2133)NA
Mini-Mental State Examination Score (0–30)127.8 (2.3)NA
Body fat, %142.5 (6.4)NA
Femoral neck -score1, 2 0.01 (0.93)NA
WOMAC
 Total index (range: 0–2400)796 (576)583 (652)
 Pain score (range: 0–500)202.4 (123.4)131.9 (143.6)
 Stiffness score (range: 0–200)99.1 (63.5)76.8 (54.2)
 Function score (range: 0–1700)494.5 (413.9)375.0 (474.1)
Physical functioning
 Normal walking speed, m/s0.9 (0.2)0.9 (0.2)
 Fast walking speed, m/s1.2 (0.2)1.75 (1.8)
 TUG, s9.1 (1.5)10.5 (2.2)
 Chair stand time, s14.8 (3.3)14.2 (2.6)
 Stair climb, s11.5 (1.9)12.2 (2.4)
 Isometric leg extensor strength, N/kg19.3 (8.0)23.2 (10.2)
 SPPB score (0–12)9.9 (1.2)9.9 (1.9)
Balance
 ML velocity, eyes open, mm/s3.7 (2.3)4.7 (2.5)
 AP velocity, eyes open, mm/s6.7 (2.8)8.7 (6.3)
 Moment of velocity, eyes open, mm2/s8.8 (5.6)15.1 (13.0)
ROM
 Hip abduction, arthritic side33.2 (11.5)33.8 (11.2)
 Hip abduction, healthy side42.0 (7.2)42.6 (6.8)
 Hip flexion, arthritic side96.2 (10.2)98.8 (14.2)
 Hip flexion, healthy side104.0 (10.7)103.5 (11.4)
 Hip extension, arthritic side12.1 (4.5)15.8 (5.9)
 Hip extension, healthy side16.8 (5.5)19.5 (7.0)

Only baseline measurements.
Femoral neck bone density compared to reference population from Finland (age: 2040 years).