Wilcox 2018.

Study name	A randomised controlled trial to prevent excessive gestational weight gain Rand promote postpartum weight loss in overweight and obese women: Health In Pregnancy and Postpartum (HIPP)
Methods	RCT
Participants	White or African American Women who are within the first 16 weeks of pregnancy, between the ages of 18‐44 years, have a prepregnancy BMI ≥ 25 kg/m2 and a prepregnancy weight ≤ 370 pounds, can read and speak English and has no plan to move outside of the geographic area in 18 months.
Interventions	Intervention: Participants in the lifestyle intervention will receive two one‐hour in‐depth counselling sessions, one during pregnancy and the other postpartum. The sessions will primarily focus on participants dietary intake and physical activity. Participants will receive a reports, a binder of study handouts, a pedometer for tracking physical activity and a bathroom scale. Weekly to biweekly 20‐minute telephone counselling, where participants weighs in and the interventionist refers to participant handouts. A total of 26 behavioural podcasts will be delivered to provide information weight gain in pregnancy, healthy eating and physical activity through dialogue and an audio blog. Finally, participants will have access to a private Facebook group for support and posts related to intervention content. Control: participants in the standard care group will receive regular clinic visits with prenatal care providers and standard nutrition counselling emphasising diet. Participants will also receive 12 study mailings focusing on development and 26 podcasts focusing on healthy pregnancy, fetal and infant development and parenting.
Outcomes	Main: total gestational weight gain. Secondary: gestational weight gain (Seca scale), postpartum weight retention, pregnancy and postpartum physical activity (SenseWear Armband, IPAQ), pregnancy and postpartum dietary intake (ASA24), health‐related quality of life (SF‐12), offspring adiposity Other‐ exercise social support (Friend Support for Exercise Habits Scale and the Family Support for Exercise Habits Scale), diet social support (Friend Support for Diet Scale and the Family Support for Diet), exercise self‐efficacy (Marcus and colleague's validated 5‐item questionnaire), diet self‐efficacy (10‐item Self‐Efficacy for Diet Questionnaire, exercise self‐regulation (EGS and Exercise Planning and Scheduling Scale), diet self‐regulation (22‐item scale from the HealthStyles survey), sociodemographic, health, and pregnancy‐related characteristics, satisfaction with body function and appearance, perceived stress (Perceived Stress Scale), depressive symptoms (10‐item Edinburgh Postnatal Depression Scale), general social support (Medical Outcomes Study Social Support Survey), physical activity environment (PANES), food environment, food insecurity (Household Food Security Scale), fast food consumption (Early Childhood Longitudinal Study).
Starting date	January 2015
Contact information	Sara Wilcox, PhD Phone: 803‐777‐8141 Email: wilcoxs@mailbox.sc.edu
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