Goals for Reaching Optimal Wellness: GROWell
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ClinicalTrials.gov Identifier: NCT04449432 |
Recruitment Status :
Recruiting
First Posted : June 26, 2020
Last Update Posted : April 27, 2022
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Condition or disease | Intervention/treatment | Phase |
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Pregnancy Related Gestational Weight Gain Postpartum Weight Retention Overweight and Obesity | Behavioral: GROWell (Interactive Obesity Treatment Approach) Behavioral: Attention Support Control | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 480 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | Comparing intervention to active control |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Prevention |
Official Title: | Goals for Reaching Optimal Wellness: GROWell |
Actual Study Start Date : | December 14, 2020 |
Estimated Primary Completion Date : | December 31, 2023 |
Estimated Study Completion Date : | December 31, 2023 |

Arm | Intervention/treatment |
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Experimental: GROWell (Interactive Obesity Treatment Approach)
With Self-regulation Theory as the framework, the Interactive Obesity Treatment Approach Adapted for Pregnancy/Postpartum includes four components: (1) personalized goal setting, (2) daily support and educational messages, (3) self-monitoring of behavior with tailored feedback, and (4) skills training. Each component aligns with the self- regulatory processes shown in previous studies to be necessary for behavior change. All interactions with participants are via text using a cell phone.
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Behavioral: GROWell (Interactive Obesity Treatment Approach)
Personalized messaging via cell phone to support healthy eating behaviors during pregnancy and through 6 months postpartum |
Active Comparator: Attention Support Control
The attention control will be delivered using text messaging to reduce the potential placebo effect that interacting with our mHealth system may have on pregnancy weight gain and postpartum weight loss. Information will be provided to control group participants that is specific to pregnancy, labor, delivery, and early infancy, but not to diet. Texts are specific to the participant's partner, pregnancy, employment, and breastfeeding plans/status.
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Behavioral: Attention Support Control
Personalized messaging via cell phone to support healthy behaviors during pregnancy and through 6 months postpartum |
- Gestational Weight Gain [ Time Frame: Mid-study (25-30 weeks) ]Gestational weight gain will be calculated as: [weight(delivery) - weight(preconception)]. Women will be categorized as gaining excess gestational weight if they started pregnancy as overweight and gained more than 25 pounds or started pregnancy as obese and gained more than 20 pounds.
- Postpartum Weight Retention [ Time Frame: End of study (50-55 weeks) ]Postpartum weight retention will be calculated as: [weight(6 months postpartum) - weight(preconception)]. Women will be categorized as experiencing postpartum weight retention if postpartum weight at 6 months is greater than 1.05*preconception weight.
- Adherence to text-based self- monitoring [ Time Frame: mid-study (25-30 weeks) and post-study (50-55 weeks) ]Measured cumulatively by week as the number of times a participant responds to weekly prompts to report on her progress to the number of times she was prompted, calculated to a percent separately for prenatal and postnatal periods.
- Adherence to prescribed goals [ Time Frame: mid-study (25-30 weeks) and post-study (50-55 weeks) ]Measured cumulatively by week as the proportion of goals for which a participant has "good adherence" during the previous week, defined as adhering to the goal 5/7 days, or >70%, calculated to a percent and separately for prenatal and postpartum periods.
- Delivery type [ Time Frame: mid-study (25-30 weeks) ]Categorical as cesarean or vaginal delivery
- Fetal growth abnormalities [ Time Frame: mid-study (25-30 weeks) ]categorical as small-for-gestational age, large-for- gestational-age, macrosomia, or none.
- Pregnancy complications [ Time Frame: mid-study (25-30 weeks) ]categorical as gestational diabetes, hypertension, preeclampsia/eclampsia, placental abruption, fetal death, antepartum admission, preterm birth with and without NICU admission, none

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 44 Years (Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- 10-16 weeks gestation of a confirmed pregnancy (i.e., ultrasound/heartbeat detected)
- Nulliparous or >12 months since previous birth
- Receive care at one of eight UC Davis Obstetric Clinics and plan to deliver at UC Davis Medical Center
- BMI >25 and <40 who are willing to receive and respond to texts using their own cell phone or a study-provided phone
Exclusion Criteria:
- Known pregnancy or fetal complications/high-risk status
- Multiple gestation
- Unable to read/write English
- BMI >40
- Current smokers
- Quit smoking <6 months prior to enrollment

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04449432
Contact: William Pacuilla | (530) 754-8280 | bpacuilla@ucdavis.edu | |
Contact: Grace Liu | (530) 754-8323 | proposals@ucdavis.edu |
United States, California | |
UC Davis | Recruiting |
Davis, California, United States, 95616 | |
Contact: Grace Liu, JD 530-754-7700 proposals@ucdavis.edu |
Principal Investigator: | Leigh Ann Simmons, PhD | University of California, Davis |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | University of California, Davis |
ClinicalTrials.gov Identifier: | NCT04449432 |
Other Study ID Numbers: |
1399548 1R01NR017659-01A1 ( U.S. NIH Grant/Contract ) |
First Posted: | June 26, 2020 Key Record Dates |
Last Update Posted: | April 27, 2022 |
Last Verified: | April 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
pregnancy gestational weight gain postpartum weight retention overweight |
obesity diet mHealth digital health |
Body Weight Overweight Weight Gain Gestational Weight Gain Body Weight Changes |