Table 2.
Adjusted linear regression coefficients assessing the independent association between CRF and birthweight (g).
| Parameter estimates |
|||
|---|---|---|---|
| Predictors | β | SE | p-value |
| Primary exposures | |||
| CRF (ml O2∙kg−1∙min−1) at 17 weeks | −8.83 | 16.77 | 0.6000 |
| Covariates | |||
| Maternal age (y) | 7.56 | 12.13 | 0.5347 |
| Gestational age (weeks) | 144.98 | 30.14 | <0.0001 |
| Gestational weight gain⁎ | 10.64 | 7.30 | 0.1485 |
| Group allocation | |||
| Exercise | 60.54 | 112.38 | 0.5915 |
| Stretching (referent) | – | – | – |
⁎
Gestational weight gain represents weight gained during 17 weeks and 28 weeks of gestation (corresponding to participant laboratory visits).