Table 5.
Associations of clinical characteristics with change in maximal treadmill walking time among participants randomized to exercise and control, respectively (continued)
| N | Baseline maximal treadmill walking time, mean (STD) | 6-month maximal treadmill walking time, mean (STD) | Within group change in maximal treadmill walking time, mean (95% CI) | Between group change in maximal treadmill walking time, mean (95% CI) | P value | |
|---|---|---|---|---|---|---|
| Lower extremity revascularization | ||||||
| Participants randomized to exercise | ||||||
| No | 96 | 7.30 (4.73) | 11.88 (5.71) | 4.58 (3.73, 5.43) | Reference | 0.6802 |
| Yes | 43 | 6.74 (4.57) | 11.00 (5.07) | 4.26 (2.98, 5.53) | −0.32 (−1.85, 1.21) | |
| Participants randomized to control | ||||||
| No | 97 | 8.05 (4.13) | 8.70 (4.30) | 0.65 (0.05, 1.24) | Reference | 0.6607 |
| Yes | 40 | 6.09 (2.67) | 6.49 (3.80) | 0.40 (−0.53, 1.33) | −0.25 (−1.35, 0.86) | |
| Baseline six-minute walk | ||||||
| Participants randomized to exercise | ||||||
| ≤ 333.8 meters | 73 | 5.18 (3.01) | 9.34 (4.09) | 4.16 (3.19, 5.14) | Reference | 0.3518 |
| > 333.8 meters | 66 | 9.28 (5.22) | 14.11 (5.83) | 4.83 (3.80, 5.86) | 0.67 (−0.75, 2.09) | |
| Participants randomized to control | ||||||
| ≤ 333.8 meters | 62 | 5.65 (2.83) | 5.78 (3.16) | 0.13 (−0.61, 0.87) | Reference | 0.1094 |
| > 333.8 meters | 75 | 8.99 (3.95) | 9.94 (4.16) | 0.94 (0.27, 1.62) | 0.81 (−0.19, 1.81) | |
| Baseline maximal treadmill walking time | ||||||
| Participants randomized to exercise | ||||||
| ≤6.30 minutes | 75 | 3.92 (1.46) | 9.50 (4.67) | 5.58 (4.66, 6.51) | Reference | 0.0007 |
| > 6.30 minutes | 64 | 10.89 (4.32) | 14.07 (5.44) | 3.19 (2.18, 4.19) | −2.40 (−3.76, −1.03) | |
| Participants randomized to control | ||||||
| ≤6.30 minutes | 59 | 4.17 (1.39) | 5.47 (3.27) | 1.30 (0.55, 2.05) | Reference | 0.0120 |
| > 6.30 minutes | 78 | 9.98 (3.18) | 10.01 (3.89) | 0.03 (−0.62, 0.68) | −1.28 (−2.27, −0.28) | |