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Excessive weight gain (EWG) over standard recommendation is the most common health issues among pregnant women. The effect of EWG read to high risk for pregnant women and fetus. Therefore, it is important to control gestational weight gain based on pre-pregnancy body mass index following Institute of Medicine (IOM). The study was a two-group pretest-posttest pseudo-randomized controlled trial research design to compare average EWG than IOM recommendations in a Dietary Promotion through Self-monitoring Program (experimental group) and to compare average EWG than IOM recommendations between the experimental and control group. Participants were 50 primigravidas with weight gain exceeding IOM recommendations at 27 to 29 weeks of gestational visiting the antenatal clinic at Sunpasitthiprasong Hospital, Ubon Ratchathani province from January 2018 to March 2019 inclusive: 26 in the control group, 24 in the experimental group. The control group received standard nursing care, while the experimental group received a Dietary Promotion program through self-monitoring based on Pender’s health promotion model (2015) with the Z-Baby Plus mobile App. The research instrumens included the Dietary Promotion through Self-monitoring Plans, a Dietary Promotion through Self-monitoring Handbook, and a Z-Baby Plus mobile Application Handbook. Content validity of all instruments were validated by three experts, and the weighing apparatus passed a calibration. Data collection instruments included the Z-Baby plus App and a Gestational Weight Gain Recording Form.Data were analyzed using descriptive statistics and repeated measure ANOVA.
The finding of this study was found that, the experimental group had average EWG than IOM recommendations at 31 to 33 weeks of gestational and at 35 to 37 weeks of gestational was statistically significant degree less than the average EWG at 27-29 weeks of gestational (p<.05). Moreover, the average EWG of the experimental group had statistically significantly lower average EWG than the control group (p<.05).
The findings from this study revealed that Health Promotion Model and Self-monitoring can change behavior. The midwives should use the Dietary Promotion through Self-monitoring Program to control gestational weight gain of pregnant women following of IOM recommendations