Table 3.
Odds Ratios for the association of vigorous-intensity sports and exercise with rate of gestational weight gaina below and above the Institute of Medicine’s prepregnancy BMI-specific recommended ranges.
| Gestational weight gain below recommended rates (n= 548) |
Gestational weight gain above recommended rates (n= 251) |
||
|---|---|---|---|
| N | ORb (95% CI) | ORb (95% CI) | |
| Full cohort (n= 977) | |||
| None | 704 | 1.00 | 1.00 |
| Anyc | 273 | 0.94 (0.64, 1.38) | 0.63 (0.40, 0.99) |
| None | 704 | 1.00 | 1.00 |
| Lowd | 138 | 1.20 (0.71, 2.04) | 0.84 (0.50, 1.53) |
| Highd | 135 | 0.75 (0.46, 1.21) | 0.48 (0.27, 0.87) |
| P for trend | 0.39 | 0.02 | |
|
Prepregnancy BMI < 25 kg/m2 (n= 349)e |
|||
| None | 243 | 1.00 | 1.00 |
| Anyf | 106 | 1.66 (0.86, 3.19) | 1.24 (0.52, 2.94) |
| None | 243 | 1.00 | 1.00 |
| Lowd | 53 | 2.08 (0.80, 5.37) | 2.65 (0.87, 8.03) |
| Highd | 53 | 1.40 (0.63, 3.13) | 0.39 (0.10, 1.59) |
| P for trend | 0.23 | 0.64 | |
|
Prepregnancy BMI ≥ 25 kg/m2 (n= 626) |
|||
| None | 460 | 1.00 | 1.00 |
| Anyg | 166 | 0.65 (0.39, 1.06) | 0.46 (0.27, 0.79) |
| None | 460 | 1.00 | 1.00 |
| Lowd | 85 | 0.86 (0.45, 1.65) | 0.50 (0.24, 1.03) |
| Highd | 81 | 0.49 (0.26, 0.91) | 0.43 (0.22, 0.92) |
| P for trend | 0.03 | 0.005 |
Average weekly rate of gestational weight gain from gestational diabetes diagnosis to end of pregnancy.
Multinomial logistic regression model adjusted for age, prepregnancy BMI, race-ethnicity, education, income, number of weeks between weight measurements at gestational diabetes diagnosis and before delivery, and total volume of physical activity; rate of gestational weight gain ‘within’ the range recommended by the IOM as the reference.
Range of vigorous-intensity sports and exercise (MET hours per week) among all women reporting any participation in vigorous-intensity sports and exercise: 1.6–21.0
‘Low’ versus ‘high’ cut point (1.75 MET hours per week) is the median vigorous-intensity sports and exercise among all women reporting some participation in vigorous-intensity sports and exercise.
African American women excluded from analyses of prepregnancy BMI < 25 kg/m2 due to small cell sizes (n= 2).
Range of vigorous-intensity sports and exercise (MET hours per week) among women with prepregnancy BMI < 25 kg/m2 reporting some participation in vigorous-intensity sports and exercise: 1.6–21.0.
Range of vigorous-intensity sports and exercise (MET hours per week) among women with prepregnancy BMI ≥ 25 kg/m2 reporting some participation in vigorous-intensity sports and exercise: 1.6–19.5.
BMI= Body Mass Index.