Phase 1Participants wore a SenseWear physical activity armband and completed a

Phase 1participants wore a sensewear physical

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Phase 1: Participants wore a SenseWear® physical activity armband and completed a food diary (four consecutive days) in the third trimester of pregnancy. Demographic and obstetric data were collected from maternity records. Phase 2: Interviews were conducted at 3-4 months postpartum with a subgroup of women who delivered macrosomic babies, and analysed using content analysis. The Office for Research Ethics Committee for Northern Ireland (ORECNI) approved the study on 25/06/09 (Ref 09/NIR02/26). Women gave written informed consent and had at least 48 hours to review the patient information sheet. PHASE 1 RESULTS Of the 158 eligible referrals, 112 women participated in the study (71%). There was no significant difference in energy balance between groups. Women predicted to and who delivered macrosomic babies (≥4000g) spent significantly more time at very low levels of physical activity (<1 MET) than other women (p=0.007). Intake of PUFA n-3 was significantly higher in women who were predicted to deliver macrosomic babies but who subsequently delivered AGA babies at full term of this pregnancy (p=0.015). Women predicted to deliver macrosomic babies were more likely to be overweight (BMI> 25 kg/m²) at booking (p =0.017) and have attained third level education (p= 0.024). Predicted macrosomia was strongly associated with Caesarean section (p =0.010) compared with the control group (43% vs 22%). PHASE 2 RESULTS Four overarching themes emerged: Preparation for delivery Physical and emotional impact of macrosomia Professional relations Perceptions of macrosomia
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