Be Healthy in Pregnancy (B-HIP): A Trial to Study Nutrition and Exercise Approaches for Healthy Pregnancy (BHIP)
|Excessive Weight Gain in Pregnancy as Antepartum Condition Obesity Weight Gain Type 2 Diabetes||Behavioral: Exercise and Nutrition Intervention|
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Participant, Outcomes Assessor
Primary Purpose: Treatment
|Official Title:||Be Healthy in Pregnancy (B-HIP): A Randomized Clinical Trial (RCT) to Study Nutrition and Exercise Approaches for Healthy Pregnancy|
- Gestational weight gain within IOM guidelines [ Time Frame: Change from baseline at 38 weeks gestation ]Among pregnant women (population), does introducing a structured and monitored nutrition and exercise program (treatment) in early pregnancy compared with Usual Prenatal Care (control) increase the likelihood of attaining GWG within the IOM guidelines (outcome) over the pregnancy period?
- Bone outcomes [ Time Frame: 6 months post-partum ]Bone status in mothers and infants at 6 months after delivery will be assessed against reference data for bone mineral content (infants) or bone mineral density (mothers) and anthropomorphic outcomes in babies (weight and height).
|Study Start Date:||July 2012|
|Estimated Study Completion Date:||June 30, 2018|
|Estimated Primary Completion Date:||December 30, 2017 (Final data collection date for primary outcome measure)|
Experimental: Exercise and Nutrition Intervention
Nutrition intervention: The proposed nutrition plan is a high protein (25% energy) diet providing low fat dairy foods and individualized to energy needs. Dairy foods are accepted by women during pregnancy as a healthy choice (from pilot study) and in our recent birth cohort study, women consumed an average of 3 or more servings of dairy per day. Exercise intervention: Most previous studies and published guidance focus on aerobic exercise such as walking as it is the easiest physical activity to implement in pregnancy in terms of setting goals of steps and monitoring of adherence using accelerometer-type devices. Walking is also the most practical since women reduced moderate and vigorous physical activity during pregnancy but levels of walking were maintained.
Behavioral: Exercise and Nutrition Intervention
Both Intervention and Control participants and their care providers receive the new Health Canada guide on Healthy Weight Gain During Pregnancy. For the Experimental Group, the exercise intervention includes a custom-designed pregnancy-specific group walking class of 30-60 min. 1x/week and a prescribed at-home walking program to reach 10,000 steps/day. The nutrition intervention is a high protein (25% energy) low-fat dairy food plan designed to meet energy needs and with individualized counselling.
No Intervention: Usual Prenatal Care
Mothers in the Control Group will be followed by their primary care provider and have usual access to public health. In addition, women will have the opportunity to attend one focus group session exploring women's experiences with nutrition, exercise, and weight gain in pregnancy.
This will be a 2-arm randomized 1-site trial. Recruitment will be within the community care clinics by poster and flyer advertisements.
Primary research question: Among pregnant women, does introducing a structured and monitored nutrition and exercise program (treatment) in early pregnancy compared with Usual Prenatal Care (control) increase the likelihood of attaining gestational weight gain within the Institute of Medicine (IOM) guidelines over the pregnancy period?
Experimental and Control groups: Both groups of mothers and their health care providers will be given the Health Canada materials on "Healthy Weight Gain during Pregnancy", "Eating Well with Canada's Food Guide" and the "Pregnancy Weight Gain Calculator". Baseline information will be recorded for eligible and consenting women after which they will be randomized to Experimental or Control group. Nutrition intake, physical measures and physical activity will be recorded at baseline, 26-28 weeks and 36-38 weeks of gestation and 6 months post partum in the same manner for both groups. All mothers will receive the study promotional materials and small incentives. Also, all mothers will be followed by their primary care provider and have usual access to Public Health.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01693510
|Contact: Stephanie A. Atkinson, PhD||905-521-2100 ext firstname.lastname@example.org|
|Contact: Caroline Moore, BSc(Hons)||9055259140 ext email@example.com|
|McMaster University Medical Centre||Recruiting|
|Hamilton, Ontario, Canada, L8S 4K1|
|Contact: Stephanie Atkinson, PhD 905-521-2100 ext 75644|
|Principal Investigator: Stephanie A. Atkinson, PhD|
|Principal Investigator:||Stephanie A. Atkinson, PhD||McMaster University|