Table 2.
Demographic data of subgroups (mean ± SD)
| Demographic | 30s | 40s | 50s | 60s | 70s | 80s |
|---|---|---|---|---|---|---|
| Number of participants | 17 | 24 | 47 | 73 | 42 | 9 |
| Female number (ratio) | 12 (70%) | 15 (62%) | 29 (61%) | 48 (65%) | 18 (43%) | 1 (11%) |
| Height (cm) | 163.4 ± 10.4 | 163.6 ± 9.9 | 165.0 ± 8.7 | 159.3 ± 8.3 | 159.1 ± 8.8 | 158.6 ± 7.1 |
| Weight (kg) | 60.0 ± 13.3 | 61.2 ± 13.3 | 63.4 ± 14.0 | 56.5 ± 10.7 | 59.0 ± 8.7 | 56.1 ± 9.1 |
| BMI (kg/m2) | 22.1 ± 3.6 | 22.7 ± 3.5 | 23.0 ± 3.7 | 22.1 ± 3.3 | 23.2 ± 2.3 | 22.2 ± 4.1 |
| Leg strength (kg) | 26.4 ± 12.4 | 28.5 ± 9.8 | 29.7 ± 12.6 | 25.4 ± 8.4 | 26.7 ± 9.6 | 19.1 ± 6.0 |
| Up and Go time (seconds) | 5.5 ± 1.0 | 5.4 ± 0.9 | 5.7 ± 0.7 | 6.2 ± 1.3 | 6.8 ± 1.5 | 9.0 ± 4.1 |
| Participants with XP (number) | 49 | 32 | 6 | |||
| Radiographic knee OA (number) | 19 | 13 | 4 | |||
BMI = body mass index; Up and Go = Timed Up and Go test; OA = osteoarthritis; XP = Xray photography.