Table 3.
Associations between physical activity (PA) measures, ALSPAC, UK (N = 9,889)
| N (%) | % Strenuous PA ≥ 3 h/week | |||
|---|---|---|---|---|
| 18 weeks | 32 weeks | 18 weeks | 32 weeks | |
| Total | 9,889 (100) | 9,889 (100) | 48.8a | 48.9a |
| Perceived change in PA since pregnancy | ||||
| Yes, increased a lot/a little | 633 (6.4) | No data | 58.6 | 58.8 |
| No, change a little | 3,328 (33.7) | 53.6 | 52.6 | |
| Yes, decreased a lot | 4,830 (48.8) | 47.3 | 47.3 | |
| Yes, decreased | 1,026 (10.4) | 34.4 | 38.8 | |
| Missing | 72 (0.7) | 41.7 | 47.2 | |
| Perceived PA levels relative to other pregnant women | ||||
| Much/somewhat more active | 2,531 (25.6) | 2,903 (29.4) | 61.6 | 57.0 |
| About the same | 6,045 (61.1) | 5,849 (59.2) | 46.4 | 47.4 |
| Somewhat/much less active | 1,210 (12.2) | 1,040 (10.5) | 35.0 | 40.3 |
| Missing | 103 (1.1)b | 97 (0.9)b | 37.9 | 44.7 |
| Partner’s hours in strenuous PA (n = 7,577) | ||||
| ≥3 h/week | 4,462 (58.9) | No data | 53.2c | 52.1d |
| <3 h/week | 3,115 (41.1) | 41.6c | 43.7d | |
IQR interquartile range, PA physical activity
aMcNemar test was used to assess the changes in strenuous PA ≥ 3 h/week between 18 and 32 weeks of gestation (P = 0.74)
bBhapkar test was used to assess the changes in perceived PA levels relative to other pregnant women between 18 and 32 weeks of gestation (P < 0.0001)
c,dChi-square tests were used to compare the % of strenuous PA ≥ 3 h/week by partner’s PA at 18 and 32 weeks (P < 0.0001)