Table 3.
Comparison of TKA Group and Control Group for Indoor and Outdoor Walking Tests
| Group; mean (SD) or median (range)* |
||
|---|---|---|
| Variable | Control, n=22† | TKA, n=14† |
| Indoor tests | ||
| 6 MWT distance, m | 591.1 (70.6) | 576.4 (108.8) |
| 10 mWT, s | 7.0 (1.1) | 6.3 (1.1)‡ |
| TUG time, s | 8.0 (1.2) | 7.4 (1.2)‡ |
| SCT ascending, s | 6.9 (4.6–11.1) | 6.3 (4.6–8.5) |
| SCT descending, s | 6.6 (4.1–12.1) | 6.4 (3.7–8.7) |
| Outdoor tests | ||
| Total walk time, s | 497 (444–696) | 505 (445–577) |
| Best pace, m/s | 1.92 (0.28)§ | 1.99 (0.27) |
| Outdoor walk distance, m | 580 (560–600)§ | 580 (530–600) |
| 100 m grass time, s | 61 (55–82) | 64 (54–76) |
| Average stride length on grass, m | 0.80 (0.11) | 0.79 (0.08) |
| 100 m sidewalk time, s | 62 (7) | 62 (6) |
| Average stride length on sidewalk, m | 0.81 (0.10) | 0.80 (0.08) |
| Ramp ascent time, s | 46 (42–64)¶ | 49.5 (50–59) |
| Ramp descent time, s | 48 (7)¶ | 49 (6) |
*
Variables found to be normally distributed are reported as mean (SD); all other variables are reported as median (range).
†
Unless otherwise noted.
‡
n=16.
§
n=20.
¶
n=21.
TKA=total knee arthroplasty; 6 MWT=6-minute walk test; 10 mWT=10 m walk test; TUG=timed up-and-go test; SCT=stair-climb test.