Table 2.
ActivPAL Measured Outcomesa at Baseline and 12 Weeks
| Measure | Baseline (M ± SD) | Follow-up (M ± SD) | Difference in mean change from baseline (I-STAND vs. control; mean differenceb [95% CI]) | p value |
|---|---|---|---|---|
| Sitting time (min per day) | −58.0 [−100.3, −15.6] | .007 | ||
| I-STAND | 584 ± 116 | 528 ± 137 | ||
| Control | 600 ± 85 | 600 ± 104 | ||
| Percentage of the day sitting | −5.6 [−9.6, −1.6] | .006 | ||
| I-STAND | 66.1 ± 12.5 | 60.1 ± 14.0 | ||
| Control | 66.2 ± 9.0 | 65.8 ± 9.3 | ||
| Standing time (min per day) | 41.1 [8.5, 73.7] | .014 | ||
| I-STAND | 224 ± 113 | 266 ± 115 | ||
| Control | 230 ± 72 | 230 ± 66 | ||
| Percentage of the day standing | 5.3 [1.7, 8.8] | .004 | ||
| I-STAND | 25.1 ± 11.6 | 30.7 ± 13.5 | ||
| Control | 25.2 ± 7.4 | 25.5 ± 7.8 | ||
| Stepping time (min per day) | 2.2 [−8.3, 12.7] | .68 | ||
| I-STAND | 78 ± 25 | 81 ± 22 | ||
| Control | 78 ± 24 | 79 ± 24 | ||
| Percentage of the day stepping | 0.5 [−0.7, 1.6] | .42 | ||
| I-STAND | 8.8 ± 2.7 | 9.3 ± 2.4 | ||
| Control | 8.6 ± 2.5 | 8.7 ± 2.5 | ||
| Breaks | −3.4 [−9.5, 2.8] | .28 | ||
| I-STAND | 51 ± 14 | 51 ± 13 | ||
| Control | 56 ± 18 | 59 ± 21 | ||
| Prolonged bouts | −1.4 [−2.3, −0.5] | .003 | ||
| I-STAND | 5.9 ± 1.9 | 4.4 ± 2.0 | ||
| Control | 5.5 ± 1.4 | 5.6 ± 1.6 | ||
| Step count | 351 [−646, 1,348] | .49 | ||
| I-STAND | 6,016 ± 2,281 | 6,302 ± 2,366 | ||
| Control | 5,887 ± 2,050 | 5,877 ± 2,005 |
Note. CI = confidence interval.
a
Limited to 53 participants (n = 29 I-STAND; n = 24 control) with valid activPAL data at both baseline and follow-up.
b
Models are adjusted for baseline measure of the outcome.