Table 2.
Intervention effects on objectively measured work time and total time activity variables, in minutes, at 3 and 12 months
| Time | Stand+ | Move+ | Difference (95% CI) | ICC | |
|---|---|---|---|---|---|
| Adjusted Mean Change (95% CI) | Adjusted Mean Change (95% CI) | ||||
| Primary Outcomes | |||||
| Work periods (n = 546) | |||||
| Sitting | 3 M | −63.8 (−76.8,-50.7) | 3.7 (−10.0, 17.4) | − 67.5 (−86.5,-48.4) | 0.07 |
| 12 M | −52.4 (− 62.9,-42.0) | 6.8 (−4.3, 17.8) | −59.2 (− 74.6,-43.8) | 0.03 | |
| LPA | 3 M | −0.2 (− 1.6,1.2) | 0.3 (− 1.2,1.9) | − 0.5 (−2.6, 1.6) | 0.01 |
| 12 M | 2.0 (− 0.1,4.2) | − 0.2 (− 2.4,2.1) | 2.2 (− 0.9,5.4) | 0.06 | |
| Secondary Outcomes | |||||
| Work periods (n = 546) | |||||
| Standing | 3 M | 63.3 (50.7,75.8) | −4.0 (−17.1,9.1) | 67.3 (48.9,85.6) | 0.07 |
| 12 M | 49.4 (37.9,60.9) | −6.3 (−18.2,5.7) | 55.7 (38.9,72.4) | 0.05 | |
| MVPA | 3 M | 0.7 (0.1,1.3) | −0.2 (−0.8, 0.5) | 0.9 (− 0.0, 1.8) | 0.03 |
| 12 M | 1.0 (0.3, 1.6) | −0.4 (−1.1,0.3) | 1.3 (0.4,2.3) | 0.02 | |
| LPA + MVPA | 3 M | 0.5 (−1.3,2.4) | 0.2 (− 1.8,2.2) | 0.3 (−2.4,3.1) | 0.03 |
| 12 M | 3.0 (0.7,5.4) | −0.5 (−3.0, 1.9) | 3.6 (0.1,7.0) | 0.05 | |
| Prolonged sitting (> 30 min) | 3 M | − 32.3 (−44.9,-19.8) | 7.9 (−5.2,21.0) | − 40.3 (− 58.6, − 22.0) | 0.06 |
| 12 M | − 26.8 (− 38.2, − 15.5) | 19.0 (7.1, 30.8) | −45.8 (−62.4,-29.2) | 0.04 | |
| Sit-stand transitionsa | 3 M | 0.7 (0.1,1.2) | 0.0 (− 0.6,0.6) | 0.7 (− 0.1,1.5) | 0.03 |
| 12 M | 0.8 (0.1,1.5) | −0.1 (− 0.7, 0.9) | 0.7 (− 0.4,1.8) | 0.01 | |
| Total time (n = 487) | |||||
| Sitting | 3 M | −49.1 (−66.6,-31.6) | 6.3 (−11.7,24.4) | −55.4 (−80.7,-30.2) | 0.10 |
| 12 M | −38.8 (−49.4,-28.2) | 8.9 (−2.6,20.4) | − 47.7 (− 63.6,-31.7) | 0.00 | |
| Standing | 3 M | 50.9 (35.5,66.3) | −4.5 (−20.4,11.4) | 55.4 (33.1,77.6) | 0.10 |
| 12 M | 39.0 (28.5,49.6) | −5.8 (−17.0,5.5) | 44.8 (29.1, 60.5) | 0.01 | |
| LPA | 3 M | −2.0 (−5.9,1.9) | −1.5 (− 5.5,2.5) | −0.5 (−6.2,5.1) | 0.09 |
| 12 M | −0.4 (−4.6,3.6) | −3.0 (−7.3, 1.2) | 2.6 (−3.4,8.5) | 0.07 | |
| MVPA | 3 M | 0.2 (−0.7,1.1) | −0.4 (−1.4,0.5) | 0.6 (− 0.7,2.0) | 0.05 |
| 12 M | 0.5 (−0.2,1.2) | − 0.2 (− 0.9,0.6) | 0.7 (− 0.4, 1.8) | 0.00 | |
| LPA + MVPA | 3 M | −1.8 (−6.4,2.8) | − 1.9 (− 6.7,2.9) | 0.1 (− 6.6, 6.8) | 0.10 |
| 12 M | 0.1 (−4.4,4.6) | −3.2 (− 7.9,1.5) | 3.3 (− 3.3,9.8) | 0.07 | |
| Prolonged sitting (> 30 min) | 3 M | −26.8 (− 44.6,-9.0) | 9.0 (−9.4,27.5) | −35.9 (− 61.7,-10.1) | 0.09 |
| 12 M | −22.2 (−34.7,-9.8) | 19.2 (5.9,32.5) | −41.4 (− 60.0,-22.9) | 0.01 | |
| Sit-stand transitionsa | 3 M | 0.2 (− 0.1,0.5) | −0.2 (− 0.5,0.2) | 0.4 (− 0.1,0.8) | 0.11 |
| 12 M | 0.2 (−0.1,0.5) | − 0.3 (− 0.6,-0.0) | 0.5 (− 0.1,0.9) | 0.04 | |
3 M 3 months, 12 M 12 months, LPA Light-intensity physical activity, MVPA Moderate-vigorous physical activity. Work period outcomes have been standardized to an 8 h workday (minutes). aSit-stand transitions are expressed as number of transitions per sedentary hour