School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Canada.
School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Canada; Sports Studies Department, Faculty of Arts and Science, Bishop's University, Sherbrooke, Canada.
Physiol Behav. 2022 Dec 1;257:113977. doi: 10.1016/j.physbeh.2022.113977. Epub 2022 Sep 29.
Gestational weight gain (GWG) has been shown to impact several maternal-infant outcomes. Since healthcare provider guidance on weight gain and healthy behaviors alone has failed to help women to meet guidelines during pregnancy, a practical adjunctive approach is to deliver evidence-based behavior change programs through mobile interventions. The present study aimed to assess the short-term effect of the SmartMoms Canada app to promote adequate GWG and healthy behaviors. Twenty-nine pregnant women were recruited in this app-based intervention trial to test whether a higher app usage (≥ 3.8 min·week) between 12-20 gestational weeks and 24-28 gestational weeks improved GWG, diet, physical activity, and sleep, compared to women with a lower app usage (< 3.8 min·week). Two-way mixed ANOVA for repeated measures was used to estimate the effect of the app usage and time, as well as their interaction on GWG and healthy behaviors. The likelihood ratio was used to examine the association between app usage categorization and GWG classification. Cramer's V statistic was used to estimate the effect size for interpretation of the association. Pregnant women using the SmartMoms Canada app more frequently had a higher moderate-to-vigorous physical activity (MVPA) daily average when compared with women with a lower usage (mean difference: 17.84 min/day, 95% CI: 2.44; 33.25). A moderate effect size (28.6% vs. 15.4%; Cramer's V = 0.212) was found for the association between app categorization and rate of GWG, representing a greater adherence to the GWG guidelines in women in the higher app usage group vs. the lower app usage group. Considering other physical activity, diet, and sleep variables, no app categorization effect was observed. A short-term higher usage of SmartMoms Canada app has a positive effect on objectively-measured MVPA.
孕期体重增加（GWG）已被证明会影响母婴的多种结局。由于仅通过医疗保健提供者提供有关体重增加和健康行为的指导，未能帮助女性在怀孕期间符合指南，因此，一种实用的辅助方法是通过移动干预提供基于证据的行为改变计划。本研究旨在评估 SmartMoms Canada 应用程序促进适当 GWG 和健康行为的短期效果。在这项基于应用程序的干预试验中，招募了 29 名孕妇，以测试在 12-20 孕周和 24-28 孕周之间，较高的应用程序使用（≥ 3.8 分钟/周）与较低的应用程序使用（< 3.8 分钟/周）相比，是否能改善 GWG、饮食、体力活动和睡眠。使用双向混合重复测量方差分析来估计应用程序使用和时间的效果，以及它们对 GWG 和健康行为的相互作用。使用似然比检验来检查应用程序使用分类与 GWG 分类之间的关联。Cramer's V 统计量用于估计关联的效应大小，以便解释关联。与使用量较低的孕妇相比，经常使用 SmartMoms Canada 应用程序的孕妇的日常中高强度体力活动（MVPA）平均值更高（平均差异：17.84 分钟/天，95%CI：2.44; 33.25）。在应用程序分类与 GWG 率之间发现了中度关联效应（28.6%比 15.4%；Cramer's V=0.212），这代表在使用较高应用程序使用量的女性中，对 GWG 指南的遵循程度高于使用较低应用程序使用量的女性。考虑到其他体力活动、饮食和睡眠变量，未观察到应用程序分类效果。短期更高的 SmartMoms Canada 应用程序使用量对客观测量的 MVPA 有积极影响。
