Table 1. Baseline characteristics.
| Characteristics | HI Group N=84 | LI Group N= 78 |
|---|---|---|
| Sex – Men, no. (%) | 39 (46) | 34 (44) |
| Age (years) | 63 (8) | 64 (7) |
| BMI (kg/m2) | 31 (5) | 30 (5) |
| Stair Climbing Test (s) | 17.20 (8.64) | 16.41 (7.99) |
| Timed-Up-and-Go Test (s) | 9.00 (2.91) | 8.87 (2.46) |
| 6-minute Walk Test (m) | 455 (106) | 466 (99) |
| WOMAC | 34 (13) | 33 (15) |
| SF-12 Physical Component Scale | 36 (9) | 37 (9) |
| SF-12 Mental Component Scale | 54 (9) | 54 (10) |
| Knee Extension (°) | 1 (4) | 0 (4) |
| Knee Flexion (°) | 126 (10) | 126 (11) |
| Quadriceps Strength (Nm/kg) | 1.18 (0.54) | 1.24 (0.49) |
| Hamstring Strength (Nm/kg) | 0.73 (0.32) | 0.75 (0.29) |
| Quadriceps Activation (%) | 70.9 (16.8) | 72.3 (14.2) |
All values are mean ± standard deviation except for sex which is reported in number of individuals and percent. Negative values of knee extension represent hyperextension. HI=High-intensity group. LI= Low-intensity group. BMI=body mass index. WOMAC=Western Ontario and McMaster Universities Osteoarthritis Index. SF-12=Short-form 12.