Table 3. Achievement of Intervention Targets (Secondary Outcome) by Treatment Group.
| Intervention Targets | No. (%) Participants by No. of Intervention Visits in Which Intervention Target Was Achieveda | ||||
|---|---|---|---|---|---|
| 0-8 Visits | 9-16 Visits | 17-24 Visits | 25-38 Visitsb | Total | |
| Training Group | |||||
| Strength component | |||||
| Volume: perform 3 sets of 8 repetitions for each of 4 exercises for each leg (192 repetitions) | 19 (18.1) | 8 (7.6) | 11 (10.5) | 67 (63.8) | 105 (100.0) |
| Intensity: perform all 192 repetitions through the full range of motion at the prescribed load | 25 (23.8) | 17 (16.2) | 27 (25.7) | 36 (34.3) | 105 (100.0) |
| Endurance component | |||||
| Volume: perform at least 20 min of walking or other upright activity | 16 (15.2) | 5 (4.8) | 15 (14.3) | 69 (65.7) | 105 (100.0) |
| Intensity: perform at least 20 min of walking or other upright activity while maintaining a score of 3-5 on the Borg Scale13 or 50% of heart rate reserve | 24 (22.9) | 14 (13.3) | 23 (21.9) | 44 (41.9) | 105 (100.0) |
| Active Control Group | |||||
| Perform at least 20 min of active range-of-motion exercises | 5 (4.8) | 6 (5.7) | 20 (19.0) | 74 (70.5) | 105 (100.0) |
| Receive at least 21 min of TENS, 7 min to each of 3 muscle groups (bilaterally) | 5 (4.8) | 3 (2.9) | 9 (8.6) | 88 (83.8) | 105 (100.0) |
Abbreviation: TENS, transcutaneous electrical nerve stimulation.
a
Participants were deemed not to have achieved the intervention target if the expected visit was not completed or if the visit was completed but the target was not achieved. There were 40 expected visits among participants randomized under the original protocol (n = 39 training, 36 active control). There were 32 expected visits among participants randomized under the revised protocol (n = 66 training, 69 active control).
b
Visits 1 and 2 were excluded from the calculation of the number of intervention visits in which the intervention targets were achieved because the first 2 visits were introductory sessions and had different content and expectations relative to later visits.