Table 2.
SED and Activity across Pregnancy Trimesters among Women in the MoM Health Study
| 1st Trimester | 2nd Trimester | 3rd Trimester | p-value * | |
|---|---|---|---|---|
| activPAL3 n = | 102 | 98 | 92 | |
| SED | ||||
| Hours per day | 9.7 (1.6) | 9.5 (1.4) | 9.5 (1.3) | 0.062 |
| % of time | 64.9 (10.2) | 63.0 (9.3) | 63.4 (9.6) | 0.048 |
| Prolonged SED | ||||
| Hours per day | 5.1 (1.9) | 5.0 (1.7) | 5.0 (1.6) | 0.451 |
| % of time | 34.1 (12.6) | 33.4 (11.3) | 33.3 (11.6) | 0.487 |
| Standing | ||||
| Hours per day | 3.7 (1.3) | 3.9 (1.2) | 4.0 (1.3) | 0.014 |
| % of time | 24.4 (8.2) | 26.0 (7.4) | 26.3 (7.9) | 0.011 |
| Stepping | ||||
| Hours per day | 1.6 (0.5) | 1.7 (0.6) | 1.6 (0.5) | 0.044 |
| % of time | 10.7 (3.3) | 11.0 (3.5) | 10.3 (3.1) | 0.042 |
| Steps/day | ||||
| Steps | 7,626 (2,604) | 7,774 (2,693) | 7,159 (2,353) | 0.008 |
| GT3X n = | 101 | 97 | 88 | |
| MVPA | ||||
| Min per week | 239 (108) | 229 (107) | 198 (112) | <0.001 |
| % of time | 3.9 (1.8) | 3.8 (1.8) | 3.2 (1.8) | <0.001 |
| Bouted MVPA | ||||
| Min per week | 51.5 [12.0, 107.6] | 51.6 [14.0, 109.4] | 27.6 [0.0, 95.1] | 0.085 |
| % of time | 0.8 [0.2, 1.8] | 0.9 [0.2, 1.8] | 0.5 [0.0, 1.6] | 0.149 |
Data are presented as mean (SD) or median [25th percentile, 75th percentile].
Abbreviations: MVPA, moderate-to-vigorous intensity physical activity; SED, sedentary behavior
*
Omnibus differences across trimesters were tested using likilihood ratio tests comparing nested mixed linear models with and without indicator variables for trimester. Models for hours per day of SED, prolonged SED, standing, and stepping, min per week of MVPA and natural log-transformed bouted MVPA, and steps include covariate adjustment for wear time.