Associations between first trimester sports and exercise and risk of small and large birth weight for gestational age
| Per 10 METs*hours/week increase | Crude model | Adjusted model A* | Adjusted model B† | ||||||
| RR | 95% CI | p Value | RR | 95% CI | p Value | RR | 95% CI | p Value | |
| Small weight for gestational age | 1.03 | 0.91 to 1.17 | 0.675 | 1.03 | 0.84 to 1.25 | 0.788 | 1.02 | 0.84 to 1.25 | 0.845 |
| Large weight for gestational age | 0.84 | 0.71 to 0.99 | 0.038 | 0.82 | 0.66 to 1.01 | 0.062 | 0.83 | 0.67 to 1.02 | 0.077 |
*Adjusted for study centre, maternal prepregnancy BMI, age, education, ethnicity, parity, drug use, smoking, paternal weight, history of diabetes prior to pregnancy, third trimester sleep score and physical activity prior to pregnancy.
†Adjusted for study centre, maternal prepregnancy BMI, age, education, ethnicity, parity, drug use, smoking, paternal weight, history of diabetes prior to pregnancy, third trimester sleep score, physical activity prior to pregnancy and gestational weight gain.
MET, metabolic equivalent of task; RR, relative risk.