Table 2 Results of physical function measurements
| Measurement value | Reference value | Not more than reference (cases, %) | |
|---|---|---|---|
| 6-min walk distance (m) | 332.3±112.5 | 350 | 15 (45.5) |
| SPPB (points) | 11 (8.3–12) | 8 | 19 (57.6) |
| Lower extremity muscle strength (%) | 36.6±9.6 | 40 | 15 (45.5) |
| 10-m walk speed (m/s) | 1.1±0.2 | 1.0 | 16 (48.5) |