期刊
JMIR MHEALTH AND UHEALTH
卷 9, 期 3, 页码 -出版社
JMIR PUBLICATIONS, INC
DOI: 10.2196/26091
关键词
gestational weight gain; physical activity; diet; pregnancy; mHealth; smartphone app; mobile phone app; telemedicine; randomized controlled trial
资金
- Swedish Research Council [2016-01147]
- Swedish Research Council for Health, Working Life and Welfare [2017-00088, 2018-01410]
- Vera Ax:son Johnsons' Foundation
- Strategic Research Area Health Care Science, Karolinska Institutet/Umea University
- Swedish Society of Medicine
- Karolinska Institutet
- Lions Forskningsfond
- ALF Grants, Region Ostergotland
- Yrjo Jahnsson Foundation
- Forte [2017-00088] Funding Source: Forte
- Swedish Research Council [2016-01147] Funding Source: Swedish Research Council
The study found no significant effect on gestational weight gain overall, but the intervention was more effective in reducing weight gain in women with overweight and obesity. The HealthyMoms smartphone app showed potential in promoting healthy dietary behaviors and reducing weight gain during pregnancy.
Background: Excessive gestational weight gain (GWG) during pregnancy is a major public health concern associated with negative health outcomes for both mother and child. Scalable interventions are needed, and digital interventions have the potential to reach many women and promote healthy GWG. Most previous studies of digital interventions have been small pilot studies or have not included women from all BMI categories. We therefore examined the effectiveness of a smartphone app in a large sample (n=305) covering all BMI categories. Objective: To investigate the effectiveness of a 6-month intervention (the HealthyMoms app) on GWG, body fatness, dietary habits, moderate-to-vigorous physical activity (MVPA), glycemia, and insulin resistance in comparison to standard maternity care. Methods: A 2-arm parallel randomized controlled trial was conducted. Women in early pregnancy at maternity clinics in Ostergotland, Sweden, were recruited. Eligible women who provided written informed consent completed baseline measures, before being randomized in a 1:1 ratio to either an intervention (n=152) or control group (n=153). The control group received standard maternity care while the intervention group received the HealthyMoms smartphone app for 6 months (which includes multiple features, eg, information; push notifications; self-monitoring; and feedback features for GWG, diet, and physical activity) in addition to standard care. Outcome measures were assessed at Linkoping University Hospital at baseline (mean 13.9 [SD 0.7] gestational weeks) and follow-up (mean 36.4 [SD 0.4] gestational weeks). The primary outcome was GWG and secondary outcomes were body fatness (Bod Pod), dietary habits (Swedish Healthy Eating Index) using the web-based 3-day dietary record Riksmaten FLEX, MVPA using the ActiGraph wGT3x-BT accelerometer, glycemia, and insulin resistance. Results: Overall, we found no statistically significant effect on GWG (P=.62); however, the data indicate that the effect of the intervention differed by pre-pregnancy BMI, as women with overweight and obesity before pregnancy gained less weight in the intervention group as compared with the control group in the imputed analyses (-1.33 kg; 95% CI -2.92 to 0.26; P=.10) and completers-only analyses (-1.67 kg; 95% CI -3.26 to -0.09; P=.031]). Bayesian analyses showed that there was a 99% probability of any intervention effect on GWG among women with overweight and obesity, and an 81% probability that this effect was over 1 kg. The intervention group had higher scores for the Swedish Healthy Eating Index at follow-up than the control group (0.27; 95% CI 0.05-0.50; P=.017). We observed no statistically significant differences in body fatness, MVPA, glycemia, and insulin resistance between the intervention and control group at follow up (P=.21). Conclusions: Although we found no overall effect on GWG, our results demonstrate the potential of a smartphone app (HealthyMoms) to promote healthy dietary behaviors as well as to decrease weight gain during pregnancy in women with overweight and obesity.
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