Convenience samples of 74 women in gestational weeks 8–12 with a BMI ≥24 kg/m2 were enrolled.
They were divided into intervention (N=37) or control group (N=37) according to the time sequence of seeing the doctor. The intervention group was provided with exercise, dietary, weight gain counseling and detailed plans at weeks 8–12 and every month in the second trimester. In addition, each counseling session included a personalized feedback based on their 5-day-records. Follow-up phone calls or emails were conducted every week between antenatal visits. The control group was just provided with exercise, dietary and weight gain counseling at weeks 8–12, besides the usual health education provided at the O&G outpatient department.