Table 2.
Descriptive statistics of the study participants (n = 44)
| Variable | Value |
|---|---|
| Age (years) | 65.7 (9.3) |
| Female, number (%) | 29 (65.9) |
| Body mass index (kg/m2) | 29.8 (5.5) |
| Duration of symptoms (years) | 13.0 (10.3) |
| Pain last week (NRS, range 0–10) | 4.7 (1.9) |
| WOMAC, pain (range 0–20) | 8.8 (4.0) |
| WOMAC, stiffness (range 0–8) | 4.6 (1.7) |
| WOMAC, physical function (range 0–68) | 32.5 (12.7) |
| WOMAC, total score (range 0–96) | 45.9 (17.5) |
| Muscle strength, (Nm/kg) | 0.88 (0.33) |
| Walking speed on the treadmill, (m/s) | 0.74 (0.24) |
| KL grade, number (%) | |
| 0 (none) | 3 (7.0) |
| 1 (doubtful) | 16 (37.2) |
| 2 (mild) | 9 (20.9) |
| 3 (moderate) | 10 (23.3) |
| 4 (severe) | 5 (11.6) |
| Self-reported knee instability < 3 months, number (%) | |
| Rarely (1–2 times) | 13 (29.5) |
| Regularly (3–4 times) | 18 (40.9) |
| Very often (>4 times) | 13 (29.5) |
Categorical variables are presented as numbers (percentage); continuous variables are presented as means ± SD
NRS numeric rating scale, WOMAC Western Ontario and McMaster Universities Osteoarthritis Index KL Kellgren–Lawrence score