Adaptive, behavioral intervention impact on weight gain, physical activity, energy intake, and motivational determinants: results of a feasibility trial in pregnant women with overweight/obesity
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Interventions have modest impact on reducing excessive gestational weight gain (GWG) in pregnant women with overweight/obesity. This two-arm feasibility randomized control trial tested delivery of and compliance with an intervention using adapted dosages to regulate GWG, and examined pre-post change in GWG and secondary outcomes (physical activity: PA, energy intake: EI, theories of planned behavior/self-regulation constructs) compared to a usual care group. Pregnant women with overweight/obesity (N = 31) were randomized to a usual care control group or usual care + intervention group from 8 to 2 weeks gestation and completed the intervention through 36 weeks gestation. Intervention women received weekly evidence-based education/counseling (e.g., GWG, PA, EI) delivered by a registered dietitian in a 60-min face-to-face session. GWG was monitored weekly; women within weight goals continued with education while women exceeding goals received more intensive dosages (e.g., additional hands-on EI/PA sessions). All participants used mHealth tools to complete daily measures of weight (Wi-Fi scale) and PA (activity monitor), weekly evaluation of diet quality (MyFitnessPal app), and weekly/monthly online surveys of motivational determinants/self-regulation. Daily EI was estimated with a validated back-calculation method as a function of maternal weight, PA, and resting metabolic rate. Sixty-five percent of eligible women were randomized; study completion was 87%; 10% partially completed the study and drop-out was 3%. Compliance with using the mHealth tools for intensive data collection ranged from 77 to 97%; intervention women attended > 90% education/counseling sessions, and 68-93% dosage step-up sessions. The intervention group (6.9 kg) had 21% lower GWG than controls (8.8 kg) although this difference was not significant. Exploratory analyses also showed the intervention group had significantly lower EI kcals at post-intervention than controls. A theoretical, adaptive intervention with varied dosages to regulate GWG is feasible to deliver to pregnant women with overweight/obesity.
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In Downs et al., compliance was 87%, indicating that this intensive input was largely acceptable to the women.
“Compliance was 87%, indicating that this intensive input was largely acceptable to the women.”
From Overweight, obesity and excessive weight gain in pregnancy as risk factors for adverse pregnancy outcomes: A narrative review (2022) · cites this paper as [135]
The Results (Participant characteristics) report that 87% completed the study; that figure is retention, not compliance. Results (Participant compliance) give different compliance rates, while the Discussion describes engagement with the intensive intervention as good. The acceptability inference is broadly consistent with the paper, but the 87% is mislabeled. (LLM, conf=0.89)
Experimental — accuracy not yet measuredThe Downs et al. trial was too small to determine a statistically significant effect.
“Although the intervention reduced GWG by 21%, the trial was too small to determine a statistically significant effect. 135”
From Overweight, obesity and excessive weight gain in pregnancy as risk factors for adverse pregnancy outcomes: A narrative review (2022) · cites this paper as [135]
The Downs et al. intervention reduced GWG by 21%.
“Although the intervention reduced GWG by 21%, the trial was too small to determine a statistically significant effect. 135”
From Overweight, obesity and excessive weight gain in pregnancy as risk factors for adverse pregnancy outcomes: A narrative review (2022) · cites this paper as [135]
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Cited by
Sorted by citations
Langley‐Evans, S. C., Pearce, J., & Ellis, S. (2022) · Journal of Human Nutrition and Dietetics · doi:10.1111/jhn.12999 · Cited by 288 · see citing works
- Authors
- Downs, D. S., Savage, J. S., Rivera, D. E., Pauley, A. M., Leonard, K. S., Hohman, E. E., Guo, P., McNitt, K. M., Stetter, C., & Kunselman, A.
- Affiliations
- Pennsylvania State University (US)
- Arizona State University (US)
- Corresponding author
- Downs, Danielle Symons
- ORCID
- Venue
- Journal of Behavioral Medicine
- Published
- 2021-05-05
- Volume
- 44
- Issue
- 5
- Pages
- 605-621
- ISSN
- 0160-7715 (ISSN-L)
- 1573-3521
- PMC
- PMC9764232
- OpenAlex
- W3157249336
- Cited by
- 51
- References
- 9
- Citations by year
- 2026: 6 · 2025: 11 · 2024: 10 · 2023: 9 · 2022: 10 · 2021: 4 · 2020: 1
- FWCI
- 7.48
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Journal of Behavioral Medicine (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Heart, Lung, and Blood Institute (1 R01 HL119245-01)
- National Center for Advancing Translational Sciences (UL1 TR000127 and TR002014)
- Topics
- Health Sciences › Medicine › Obstetrics and Gynecology › Gestational Diabetes Research and Management
- Health Sciences › Health Professions › General Health Professions › Mobile Health and mHealth Applications
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
- Keywords
- gestational weight gain, maternal obesity, overweight in pregnancy, adaptive interventions, behavioral interventions, physical activity, energy intake, self-regulation, motivational factors, mobile health, dietitian counseling, intervention feasibility
- MeSH terms
- Energy Intake, Feasibility Studies, Female, Humans, Obesity, Pregnancy, Pregnancy Complications, Weight Gain, Exercise, Pregnant People, Pregnant Women, Overweight
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